NXP Semiconductors TFA9810 User's Manual
Contents
1. VDDA1 A 11 13 kQ A AN VSSA1 010aaa031 Fig 11 Internal circuitry 0008 13 22V 12 010aaa032 Fig 12 Internal circuitry 0009 V 14 1 DDA2 Y 130k0 AN 55V T hvp fps p 1 A 13040 VY 55v JN 13 Vssa2 010aaa033 Fig 13 Internal circuitry 0010 VDDA2 CQ 100 ma 18 12V Vssp 010aaa034 Fig 14 Internal circuitry 0011 TFA9810_3 NXP B V 2008 All rights reserved Product data sheet Rev 03 20 February 2008 11 of 29 NXP Semiconductors TFA9810 TFA9810 3 Audio amplifier 2 x 12 W Fig 15 Internal circuitry 0012 24 23 5V 19 010aaa035 Fig 16 Internal circuitry 0013 20 OUT2N 010aaa036 Fig 17 Internal circuitry 0014 VppP2 A 21 3 4 A Vssp2 010aaa037 Fig 18 Internal circuitry 0015 22 12V OUT2P 010aaa038 NXP B V 2008 All rights reserved Product data sheet Rev 03 20 February 2008 12 of 29 NXP Semiconductors TFA9810 TFA9810 3 Audio amplifier 2 x 12 W Fig 19 Internal circuitry 0016 VppP2 A 23 AX Vssp2 010aaa039 Fig 20 Internal circuitry 0017 25 23 5V 30 010aaa040 Fig 21 Internal circuitry 0018 VppP1 AX 26 AX VssP1 010aaa041 Fig 22 Internal circuitry 0019 27 12V OUT1P 010aaa0422. NXP B V 2008 All rights reserved Product data sheet Rev 03 20 February 2008 13 of 29 NXP Semiconductors TFA981 0 Audio amplifier 2 x 12 W VpDP1 A 28 A VssP1 010aaa043 Fig 23 Internal circuitry 0020 29 12V OUTIN 010aaa044 Fig 24 Internal circuitry 0021 VDDA1 CQ 100 ma 31 12V VssD 010aaa045 Fig 25 Internal circuitry 0022 10 Limiting values Table 7 Limiting values In accordance with the Absolute Maximum Rating System IEC 60134 Symbol Parameter Conditions Min Max Unit Vp supply voltage asymmetrical 0 3 23 V lorm repetitive peak output current 3 A Tj junction temperature 150 C Tstg storage temperature 55 150 C Tamb ambient temperature 40 85 C Pmax maximum power dissipation 2 5 W TFA9810 3 NXP B V 2008 All rights reserved Product data sheet Rev 03 20 February 2008 14 of 29 NXP Semiconductors TFA9810 Table 7 Limiting values continued Audio amplifier 2 x 12 W In accordance with the Absolute Maximum Rating System IEC 60134 Symbol Parameter Conditions Min Max Unit Vx voltage on pin x DIAG Vsg 0 3 12 V IN1P INTN 12 12 V IN2P IN2N 12 12 V all other pins Vsg 0 3 Vpp 03 V Vesd electrostatic discharge voltage VINX with 1500 41500 V respect to other pins all other pins 2000 2000 V 11 Thermal characteristics Table 8 Characteristics Symbol Parameter Con
3. Vsspx V e R load resistance Q Robson drain source on state resistance Q R series resistance P905 output power at the THD level of 0 5 Yo W The output power at 10 Yo THD can be estimated by using Equation 2 P iog 1 25x P ie 2 010 Jo Figure 26 and Figure 27 below show the estimated output power at THD 0 5 and THD 10 as a function of the BLT supply voltage for different load impedances TFA9810_3 NXP B V 2008 All rights reserved Product data sheet Rev 03 20 February 2008 18 of 29 NXP Semiconductors TFA981 0 Audio amplifier 2 x 12 W 010aaa019 25 Po 20 8 12 16 20 1 RL 249 2 RL 62 3 RL 8Q Fig 26 BTL output power as function of supply voltage THD 0 5 Yo 3 A 010aaa020 30 Po 3 W 2 20 2 12 16 20 1 RL 42 2 RL 62 3 RL 82 Fig 27 BTL output power as function of supply voltage THD 10 3A 14 2 Output current limiting The peak output current is internally limited above a level of 3 A minimum During normal operation the output current should not exceed this threshold level of 3 A otherwise the output signal will be distorted The peak output current in BTL can be estimated using Equation 3 Pons M 3A 3 nax S amp o R 2x Rpson Ry Where Vp supply v
4. 11 ODP WP SO OL ENABLE DRIVER CDELAY niga CONTROL LOGIC DRIVER VppA2 13 LOW IN2P IN2N COMPARATOR 2 STABI2 Vssa2 DRIVER HIGH CONTROL LOGIC DRIVER LOW OUT2N STAB2 L1 4 32 VssD HW Fig 1 Block diagram 010aaa016 TFA9810 3 NXP B V 2008 All rights reserved Product data sheet Rev 03 20 February 2008 3 of 29 NXP Semiconductors TFA9810 7 Pinning information 7 1 Pinning Audio amplifier 2 x 12 W Fig 2 Pin configuration VSSD HW VSSD HW IN1P STAB1 ININ VssP1 VDDA1 BOOTIN Vssai OUT1N SO OL BOOT1P ENABLE OUTIP CDELAY V TFA9810 adi n c SO32 VppP2 DIAG OUT2P TEST BOOT2P Vssa2 OUT2N VppA2 BOOT2N IN2N Vssp2 IN2P STAB2 VSSD HW Vssp HW 010aaa017 The SO32 package has four corner leads These leads 1 16 17 and 32 are internally connected to the die pad and must be connected to Vssa in the application Together with the applied copper area on the Printed Circuit Board PCB these leads determine the ambient temperature which affects the thermal resistance of the junction 7 2 TFA9810 3 Table 3 Pin description Pin description Symbol Vssp HW IN1P IN1N VbDA1 Vssai SO OL ENABLE CDELAY n c DIAG TEST Vssa2 Vppa2 Pin 1 16 17 32 2 o N Oa A C 11 12 13 Description Negative digital supply voltage and handle wafer Positive input comparator channel 1 Ne
5. OUT2 we DIAG OUT2 GND 5 VDDA2 OUT2P eels 2 Es ci J6 cia di BOOT2P ROUES R29 C29 C20 THF Rig R19 R33 N2P 1 100 470 pF 680 nF O IF 3 ales 10 ka coy 8 10kQ Tf 1 BOOT2N Hl r 220 pF m BR l mo Los GND LL cog GND SA Loo 68 pF c5 100 T 470 pF 680 nF te 220 nF tuF poo GND 777220 PF hoa R34 IN2N OUT2N I OnE od 1 tI t 21 mm 10 ka 10kQ 10 ka L6 OUT2 fo OUT2 22 HH zm 17 32 30 19 100 ka R100 ds 220 GND Os VSSA1 Vssa2 VsspVssp Vssp VsspVssP1 VssP2 010aaa023 Fig 33 Typical application diagram TFA9810 7 GND M Z X z 1eyndure oipny 0186VJ L S10 19npuooliulesS dXN Jays Lep 19npoud 0 eu 8007 1eniqeJ oz 62 10 vC 0186V4L peAJesei Syu Iv 8002 8 dXN 12V 12V WI VP Ji I l L1 L2 z 032 633 100 BEAD 3 BEAD 220 uF 100 nF ef i 220 uF L l TH LAR swi C3 C31 100 nF 100 nF O ENABLE GND GND jl S an C4 C5 kic GND dL 100nF 100nF L GND GND R5 Vppa2 n c VDDP1 VppP2 ce 100 kQ EA n ap T E Re R31 IN1P OUTIP hi 3 OC Lt ji m E cun Les J J3 I uL T 220 nF i II mid 2 BOOTIP R27 CAN ml C12 C10 ripe 100 T 470pF
6. L3 L4 L5 L6 17 5 R3 18 4 R5 R14 R17 R26 19 12 R6 R7 R10 R11 R18 R19 R22 R23 R31 R32 R33 R34 20 1 SW1 21 1 U1 Part 220 uF 35 V 100 nF 50 V 1 uF 50 V 1 uF 25 V 220 pF 25 V 220 nF 25 V 47 pF 25 V 680 nF 25 V 330 nF 25 V 68 pF 25 V 1000 puF 25 V Screw terminal CINCH Jumper BEAD 22 uH 10 0 25 W 596 100 k 0 1 W 1 96 for 20 dB 200 k 0 1 W 1 96 for 26 dB 10k 0 1W 1 Yo PCB switch TFA9810T Description General purpose 85 C diameter 8 mm SMD 0805 X7R SMD 1206 X7R MKT SMD 0402 NPO SMD 0805 X7R SMD 0402 NPO MKT SMD 0805 X7R SMD 0402 NPO CE12 02R Two pins CINCH Closed on demo board only SMD 1206 Wirth Elektronik DC 0 5 Q 10 MHz 80 Q 8RDY TOKO A7040HN 220M 11RHBP TOKO A7503CY 220M or Sagami 7311NA 220M SMD 1206 SMD 0603 SMD 0603 Secme 090320901 SOT287 1 SO32 NXP Semiconductors 14 9 Snubber network Table 14 Snubber network bill of materials ltem Quantity Reference 1 4 2 4 Part C27 C28 C29 C30 470 pF 25 V SMD 0805 X7R R27 R28 R29 R30 10 0 25 W SMD 1206 5 Yo Footprint 15 Test information General Quality Specification for General Applications Power management and RF Power Document SNW FQ 611 refers TFA9810 3 NXP B V 2008 All rights reserved Product data sheet Rev 03 20 February 2008 25 of 29 NXP Semiconductors TFA9810 Audio amplifier 2 x 12 W 16 Package outlin
7. T 680 nF C7 aL 1uF R10 GND 220 pF n4 R32 ININ f a g 3 BOOTIN l l 10 KQ 10 kQ 10kQ R28 L c28 GND L cia GND i C14 100 T 470 pF 680 nF J4 R14 STAB1 7 220nF if Woka R35 OUTIN ci 5 hdi LYYY 11 4 7 UF 200 kQ v EE GND Ht CDELAY OUT1 E DUTY STABI oq SO OL Gia iuF GND Snubber network TFA9810 mE N STAB2 Optional GND ENABLE Lr OUT2 a DIAG OUT2 GND L5 Vppa2 OUT2P 22 uH R17 E 100 kQ ci ar BOOT2P some R29 C29 C20 1uF l Il E T i T m 100 77470pF T 680 nF F 10 kQ coy 07 10 KQ IN2 1 i T BOOT2N L I J5 220 pF C22 OO ae Loo GND ozs GND s T ane c2 100 470 pF 680 nF 1uF R22 GND 220 PF n23 R34 IN2N OUTON I 220nF tI t 21 mm vee er L6 OUT2 o o w R26 17 32 30 19 OUT2 22 uH 100 kQ R100 m 229 n Vssa1 Vgsa2 VsspVssp Vssp VsspVssP1 Vssp2 OUT2 010aaa431 7 GND Fig 34 Typical application diagram TFA9810 with externally adjusted switch on time M Z X z 1eyndure oipny 0186VJ L S10 19npuooliulesS dXN NXP Semiconductors TFA9810 Audio amplifier 2 x 12 W 14 8 Typical application bill of materials Table 13 Typical application bill of materials Item Quantity Reference 1 2 C1 C2 2 5 C3 C4 C5 C31 C33 3 2 C16 C17 4 4 C6 C7 C18 C26 5 4 C8 C10 C21 C24 6 4 C9 C14 C19 C25 7 1 C11 8 4 C12 C13 C20 C23 9 1 C15 10 1 C22 11 1 C32 12 3 J1 J3 J6 13 2 J2 J5 14 2 J4 J7 15 2 L1 L2 16 4
8. Vin HIGH level input voltage with respect to Vssp STABI Vestal voltage on pin STABI with respect to Vss Comparator full differential input stage Vottset i eq equivalent input offset voltage 20 Hz f 20 kHz Vem common mode voltage lig input bias current OverTemperature Protection OTP Tprot protection temperature OverVoltage Protection OVP Vih ovp overvoltage protection level internal fixed threshold voltage UnderVoltage Protection UVP VP uvp undervoltage protection level internal fixed supply voltage OverCurrent Protection OCP lo ocp overcurrent protection ru output current Window Protection WP Vo output voltage high level low level Min VssA 3 150 20 Typ Max Unit 1 20 uA 0 4 V 4 4 5 V 11 12 V 1 mV 15 uV Vppa 71 V 1 uA E 2 C 21 5 23 V 7 5 8 V 3 5 A Vpp 1 V Vssa 1 s V 1 Current limiting concept in overcurrent condition no interruption of the audio signal in case of impedance drop 12 2 Dynamic characteristics Table 10 Dynamic characteristics Tamb 25 C Vp 12 V R 8 Q Figure 33 unless otherwise specified Symbol Parameter Conditions PWM output tr rise time tr fall time TFA9810_3 Min Typ Max Unit 10 ns 10 ns NXP B V 2008 All rights reserved Product data sheet Rev 03 20 February 2008 16 of 29 NXP Semiconductors TFA981 0 Audio amplifier 2 x 12 W Table 10 Dynamic characteristics conti
9. internal 11 V regulator for channel 1 drivers 8 Functional description 8 1 General The TFA9810 is a dual switching power comparator It is the main building block for a stereo high efficiency Class D audio power amplifier system It contains two full bridge BTL power stages drive logic protection control logic and full differential input comparators and references see Figure 1 By using this power comparator a compact closed loop self oscillating digital amplifier system or open loop system can be built A second order low pass filter converts the Pulse Width Modulation PWM output signal into an analog audio signal across the speaker 8 2 Interfacing TFA9810 3 The pins ENABLE and SO OL control the operating mode of the TFA9810 Both the ENABLE and the SO OL pins refer to Vssp uw When the SO OL pin is connected to Vssa the TFA9810 is in self oscillating mode when the SO OL pin is floating the TFA9810 is in open loop mode The TEST pin needs to be connected to Vppa in both situations Table 4 SO OL connections Interfacing SO OL connected to Configuration Vssp HW Self oscillating Open Open loop The device has two modes SLEEP and OPERATING NXP B V 2008 All rights reserved Product data sheet Rev 03 20 February 2008 5 of 29 NXP Semiconductors TFA981 0 8 8 TFA9810 3 8 3 3 1 3 2 8 4 8 5 Audio amplifier 2 x 12 W In SLEEP mode the TFA9810 is not biased and has a very
10. low supply current When the TFA9810 is set to OPERATING mode the device is started via the start up sequence which provides a pop free start up behavior After start up the reference voltages STAB are present and the outputs start switching Table 5 Start up Interfacing ENABLE V Mode ENABLE 0 8 V SLEEP ENABLE gt 3 V OPERATING Input comparators The input stages have a differential input and are optimized for low noise and low offset This results in maximum flexibility in the application Operating in self oscillating configuration The inputs IN1P IN1N IN2P IN2N of the comparators are internally set to a voltage level of 0 5Vp but only during the start up sequence In operating mode the inputs are high ohmic Operating in open loop configuration No internal voltages are applied to the inputs The input pins IN1P IN1N IN2P IN2N are pulled down to Vssa level by internal resistors Diagnostic The DIAG output is an open drain output The maximum current is 2 mA Whenever one of the protections is triggered the DIAG output is activated low The DIAG output refers to Vssp Protections Overtemperature overcurrent overvoltage undervoltage overdissipation sensors and window protection are included in the TFA9810 When one of these sensors exceeds its threshold level either the output power stage is switched off and the outputs OUT1N OUT1P OUT2N OUT2P become floating or the TFA9810 shuts down and
11. starts up immediately OverTemperature Protection OTP If the junction temperature Tj exceeds a threshold level of about 150 C then the outputs become floating The device will start switching again after 5 us and when the temperature is below 150 C This is thermal limitation without audible interruptions OverCurrent Protection OCP If the output current exceeds the maximum output current threshold level the output becomes floating The device will start switching again after 5 us This is current limitation without audible interruptions NXP B V 2008 All rights reserved Product data sheet Rev 03 20 February 2008 6 of 29 NXP Semiconductors TFA981 0 Audio amplifier 2 x 12 W OverVoltage Protection OVP When the supply voltage applied to the TFA9810 exceeds the maximum supply voltage threshold level the device will shut down The device will restart when the supply voltage is within the operating range UnderVoltage Protection UVP When the supply voltage applied to the TFA9810 falls below the minimum supply voltage threshold level the device will shut down The device will restart when the supply voltage is within the operating range OverDissipation Protection ODP The ODP in the TFA9810 is a combination of two protections Exceeding a temperature threshold level of 135 C an internal pre warning is generated When an overcurrent is detected during the pre warning the device will shut
12. 2x9 W into 8 Q Po Po nom Unit uA mA founded by Philips NXP Semiconductors TFA981 0 Audio amplifier 2 x 12 W Table 1 Quick reference data continued Tamb 25 C Vp 12 V fosc 550 kHz Figure 33 unless otherwise specified Symbol Parameter Condition Min Typ Max Unit Po RMS RMS output power Ry 2 8 Q Vp 12 V 9 5 W THD 10 Two channel driven no heat sink required Po output power Vp 12V RL 82 THD 10 8 5 9 5 Ww THD 1 96 6 5 7 5 Ww Vp214V E 289 E 15 E W THD 10 thermally limited Vp 16V RL 289 gt 15 W THD 10 thermally limited Vp 12V RL 6Q E 12 W THD 10 thermally limited Vp 12V RL 4Q E 15 W THD 10 thermally limited 5 Ordering information Table 2 Ordering information Type number Package Name Description Version TFA9810T S032 S032 plastic small outline package 32 leads body width 7 5 mm SOT287 1 TFA9810 3 NXP B V 2008 All rights reserved Product data sheet Rev 03 20 February 2008 2 of 29 NXP Semiconductors TFA9810 6 Block diagram Audio amplifier 2 x 12 W TFA9810 BOOT1P DRIVER HIGH VDDP1 OUT1P VSSP1 BOOT1N OUT1N STAB1 BOOT2P VpDP2 OUT2P Vssp2 BOOT2N a DRIVER LOW IN1P 2 m STABI1 Vssai DRIVER DIAG HIGH PROTECTION OVP OCP DRIVER OTP LOW TEST
13. 7 of 29 NXP Semiconductors TFA9810 18 Legal information 18 1 Data sheet status Audio amplifier 2 x 12 W Document status JI2 Product statusi Definition Objective short data sheet Development Preliminary short data sheet Qualification Product short data sheet Production This document contains data from the objective specification for product development This document contains data from the preliminary specification This document contains the product specification 1 Please consult the most recently issued document before initiating or completing a design 2 The term short data sheet is explained in section Definitions 3 The product status of device s described in this document may have changed since this document was published and may differ in case of multiple devices The latest product status information is available on the Internet at URL http www nxp com 18 2 Definitions Draft The document is a draft version only The content is still under internal review and subject to formal approval which may result in modifications or additions NXP Semiconductors does not give any representations or warranties as to the accuracy or completeness of information included herein and shall have no liability for the consequences of use of such information Short data sheet A short data sheet is an extract from a full data sheet with the same product type number s and title A sho
14. 9810 The typical application diagram with the TFA9810 supplied from an asymmetrical supply is shown in Figure 33 TFA9810 3 NXP B V 2008 All rights reserved Product data sheet Rev 03 20 February 2008 22 of 29 Jays Lep 19npoud 0 eu 8007 1eniqeJ oz 62 40 Z 0186V4L p m s S YBu Iv 8002 8 dXN 12V 12V 12V VP Ji I l m t C32 C33 100 BEAD 3 BEAD 220 WF T 100 nF Ci C2 220 uF 2 220 yF T swt o3 E om I Al L L 100 nF iban 0 ENABLE GND GND t il 1o 1l L 4 5 OUT1 GND L100 nF 100 nF L GND GND R5 Vppa2 n c VDDP1 VppP2 C6 E OUT1 2 pe ORE R6 R81 N1p ouTiP s 2 O 1rF 3 31 mmi 10 kQ 10kQ 10 kQ Les 1 ya 2 IN1 C8 T 220 nF J2 T 220 pF C11 BOOT1P R27 C27 C12 47 pF 10Q T 470pF T 680 nF C7 l Leto 1uF pig GND 220PF pi R32 ININ L all H C 3 BOORI GND GND 10 ka 10 kQ 10 ko R28 C28 L ci3 cea 102 T 470pF T 680 nF J4 R14 7 220nF o 100 ka C15 OUT1N 1 330 nF 4 i n L CDELAY L4 OUT1 NB ro OUT1 22 uH OUT1 SO OL STABH 4k C16 l 1uF GN Snubber network TFA9810 ional GND STABI2 Optional ENABLE Il
15. AG SLEEP START UP OPERATING FAULT RESTART OPERATING SHUT DOWN SLEEP 010aaa018 Fig3 Start up sequence 9 Internal circuitry 1 16 17 32 VDDA 22V Vssa 010aaa024 Fig 4 Internal circuitry 0001 TFA9810 3 NXP B V 2008 All rights reserved Product data sheet Rev 03 20 February 2008 8 of 29 TFA9810 NXP Semiconductors Audio amplifier 2 x 12 W VDDA1 2 Y 135 xo ZX 55V A Le hvp f Vssa A 135 xa V 55V FX 3 i VSSA1 010aaa025 Fig 5 Internal circuitry 0002 4 22V 5 010aaa026 Fig 6 Internal circuitry 0003 VpDA1 Vppat OC 50 pa 110 kQ Y Y VSSA1 Y Y V Vssa 010aaa027 Fig 7 Internal circuitry 0004 NXP B V 2008 All rights reserved TFA9810 3 Product data sheet Rev 03 20 February 2008 9 of 29 NXP Semiconductors TFA981 0 Audio amplifier 2 x 12 W VDDA1 3ko 7 250 nA VSSA 010aaa028 Fig8 Internal circuitry 0005 VDDA1 V 20A 8 200 nA 5 kQ DISCHARGE Vssat 010aaa029 Fig 9 Internal circuitry 0006 VDDA1 10 34 L Vssat Vssp 010aaa030 Fig 10 Internal circuitry 0007 TFA9810 3 NXP B V 2008 All rights reserved Product data sheet Rev 03 20 February 2008 10 of 29 NXP Semiconductors TFA9810 Audio amplifier 2 x 12 W
16. General desc The TFA9810 is a two channel power comparator for high efficiency class D audio TFA9810 Stereo full bridge audio amplifier 2 x 12 W Rev 03 20 February 2008 Product data sheet ription amplifier systems It contains two full bridge Bridge Tied Load BTL power stages drive logic protection control logic and full differential input comparators By using this power comparator a compact closed loop self oscillating digital amplifier system or open loop system can be built The TFA9810 does not require a heat sink and operates using an asymmetrical supply voltage Features Applications Quick referen Stereo full bridge power comparator for class D audio amplifier applications No external heat sink required Operating voltage range asymmetrical from 8 V to 20 V Thermally protected Zero dead time switching Current limiting no audible interruptions Self oscillating or open loop class D audio amplifier applications Flat panel television sets Flat panel monitors Multimedia systems Wireless speakers High end CRT television sets ce data Table 1 Quick reference data Tamb 25 C Vp 12 V fose 550 kHz Figure 33 unless otherwise specified Symbol Parameter Condition Min Typ Max Vp supply voltage Vp Vpprx Vsspx 8 12 20 lott off state current off mode 110 200 la quiescent current with load filter and 35 45 snubbers connected Npo output power output power 87 89 efficiency
17. ditions Min Typ Max Unit Rth a thermal resistance S032 JEDEC test board p 41 44 K W from junction to S032 Two layer application 44 K W ambient board XP lad thermal SO32 ru 30 K W characterization parameter from junction to lead Wi top thermal SO32 1 2 4 8 K W characterization parameter from junction to top of package 1 Measured in a JEDEC high K factor test board standard EIA JESD 51 7 in free air with natural convection 2 Strongly depends on where the measurement is taken on the case 12 Characteristics 12 1 Static characteristics Table 9 Static characteristics Tamb 25 C Vp 12 V fose 550 kHz Figure 33 unless otherwise specified Symbol Parameter Conditions Min Typ Max Unit Supply voltage Vp supply voltage Vp Vpppx Vsspx 8 12 20 V lott off state current off mode 110 200 uA lq quiescent current with load filter and snubbers 35 45 mA connected ENABLE input Vit LOW level input voltage with respect to Vssp 0 3 0 8 V Vin HIGH level input voltage with respect to Vssp 3 Vp V TFA9810 3 NXP B V 2008 All rights reserved Product data sheet Rev 03 20 February 2008 15 of 29 NXP Semiconductors TFA9810 Table 9 Static characteristics continued Tamb 25 C Vp 12 V fose 550 kHz Figure 33 unless otherwise specified Audio amplifier 2 x 12 W Symbol Parameter Conditions li input current Vi 5V SO OL input Vit LOW level input voltage with respect to Vssp
18. down When the ENABLE pin is high the TFA9810 will restart automatically The restart sequence switch off switch on will take 200 ms to 500 ms Window Protection WP During start up if one of the outputs is shorted to Vss or Vpp the device will not start This is an effective measure to protect the device against shorts between the outputs before the filter and the ground or supply lines The supply must be switched off prior to removing any short The WP protects the device against failure during board assembly Table 6 Overview protections Protections Symbol OTP OCP OVP UVP ODP WP Condition DIAG Outputs Recovering Tj gt 150 C LOW Floating Automatic after 5 us and T lt 150 C lo gt lornm LOW Floating Automatic after 5 us and lo lt lonm Vp gt 20 V LOW Floating Restart switch off switch on when Vp lt 20 V Vp lt 8V LOW Floating Restart switch off gt switch on when Vp gt 8 V Tj gt 135 C and lo gt lornm LOW Floating Restart switch off gt switch on when Tj lt 135 C or lo lt lon OUTX gt VppA 1 Vor LOW OUTX Vssa 1V TFA9810_3 NXP B V 2008 All rights reserved Product data sheet Rev 03 20 February 2008 7 of 29 NXP Semiconductors TFA981 0 Audio amplifier 2 x 12 W 8 6 Start up sequence Vp ENABLE p Db o E STAB1 _ CDELAY llle No N LI FLOATING FLOATING PWM PWM OUT x AUDIO AUDIO AUDIO DI
19. e S032 plastic small outline package 32 leads body width 7 5 mm SOT287 1 ha detail X 5 scale DIMENSIONS inch dimensions are derived from the original mm dimensions UNIT Ai A2 Ag bp c DU EM e Hg 0 3 0 25 20 7 7 6 0 1 20 3 74 Ter 0 81 0 30 inches 0 01 0 80 029 0 05 Note 1 Plastic or metal protrusions of 0 15 mm 0 006 inch maximum per side are not included OUTLINE REFERENCES EUROPEAN VERSION JEDEC JEITA PROJECTION ISSUE DATE SOT287 1 MO 119 E 08 08 47 03 02 19 Fig 35 Package outline SOT287 1 SO23 TFA9810_3 NXP B V 2008 All rights reserved Product data sheet Rev 03 20 February 2008 26 of 29 NXP Semiconductors TFA981 0 Audio amplifier 2 x 12 W 17 Revision history Table 15 Revision history Document ID Release date Data sheet status Change notice Supersedes TFA9810 3 20080220 Product data sheet TFA9810 2 Modifications Figure 33 has been updated Figure 34 has been added TFA9810 2 20070831 Preliminary data sheet TFA9810 1 TFA9810 1 20070815 Preliminary data sheet TFA9810 3 NXP B V 2008 All rights reserved Product data sheet Rev 03 20 February 2008 2
20. g in open loop configuration 8 4 Diagrnostl6 us cesse hb 8 5 Protections 8 6 Start up sequence 9 Internal circuitry 10 Limitingvalues 11 Thermal characteristics 12 Characteristics 12 1 Static characteristics 12 2 Dynamic characteristics 12 3 AC characteristics measured in a typical application 13 Quality specification 14 Application information 14 1 Output power estimation 14 2 Output current limiting 14 3 Speaker configuration and impedance 14 4 Differential input 14 5 Single ended input 14 6 Curves measured in a typical application 14 7 Typical application diagram TFA9810 14 8 Typical application bill of materials 14 9 Snubber network 15 Test information 16 Package outline 17 Revision history 18 Legal information Lus 18 1 Data sheet status 18 2 Definitions 18 3 Disclaimers founded by 17 18 18 18 19 20 20 20 21 22 18 4 Trademarks e E RR Nee e 28 19 Contact information 28 20 Conl niS iu coo
21. gative input comparator channel 1 Positive analog supply voltage channel 1 Negative analog supply voltage channel 1 SO OL input enables self oscillating open loop configuration Enable input to switch between SLEEP and OPERATING CDELAY input determines the switch on off timing Not connected Diagnostic output open drain Test signal input for testing purposes only Negative analog supply voltage channel 2 Positive analog supply voltage channel 2 NXP B V 2008 All rights reserved Product data sheet Rev 03 20 February 2008 4 of 29 NXP Semiconductors TFA981 0 Audio amplifier 2 x 12 W Table 3 Pin description continued Symbol Pin Description IN2N 14 Negative input comparator channel 2 IN2P 15 Positive input comparator channel 2 STAB2 18 Decoupling of internal 11 V regulator for channel 2 drivers Vssp2 19 Negative power supply voltage channel 2 BOOT2N 20 Bootstrap high side driver negative output channel 2 OUT2N 21 Negative output channel 2 BOOT2P 22 Bootstrap high side driver positive output channel 2 OUT2P 23 Positive output channel 2 Vppp2 24 Positive supply voltage power channel 2 VppP1 25 Positive power supply voltage channel 1 OUT1P 26 Positive output channel 1 BOOT1P 27 Bootstrap high side driver positive output channel 1 OUT1N 28 Negative output channel 1 BOOT1N 29 Bootstrap high side driver negative output channel 1 VssP1 30 Negative supply voltage power channel 1 STAB1 31 Decoupling of
22. istency or conflict between information in this document and such terms and conditions the latter will prevail No offer to sell or license Nothing in this document may be interpreted or construed as an offer to sell products that is open for acceptance or the grant conveyance or implication of any license under any copyrights patents or other industrial or intellectual property rights 18 4 Trademarks Notice All referenced brands product names service names and trademarks are the property of their respective owners For more information please visit http www nxp com For sales office addresses please send an email to salesaddresses nxp com TFA9810 3 NXP B V 2008 All rights reserved Product data sheet Rev 03 20 February 2008 28 of 29 NXP Semiconductors TFA9810 Audio amplifier 2 x 12 W 20 Contents 1 General description 2 Features IA IAEA 3 Applications 4 Quick referencedata 5 Ordering information 6 Block diagram 7 Pinninginformation 7 1 PINNING uu Ld eee ees S ERE 7 2 Pin description 8 Functional description 8 1 General 2 escce sel o i PEE e 8 2 Interfacing 2 8 3 Inputcomparators 8 3 1 Operating in self oscillating configuration 8 3 2 Operatin
23. ith a single ended out it is important to connect the IN1N from the application board to the VSS GND of the audio source e g Audio DSP The input configuration for single ended in application is illustrated in Figure 29 NXP B V 2008 All rights reserved Product data sheet Rev 03 20 February 2008 20 of 29 NXP Semiconductors TFA981 0 Audio amplifier 2 x 12 W OUT1P IN1P AUDIO DSP IN1N OUT1N 010aaa022 Fig 29 Input configuration for single ended input 14 6 Curves measured in a typical application 010aaa197 30 dB 25 20 1 15 10 10 2 10 1 1 10 102 fi Hz Vp 12 V Vj 100 mV 1 OUT1 2 OUT2 Fig 30 Gain as a function of frequency TFA9810 3 NXP B V 2008 All rights reserved Product data sheet Rev 03 20 February 2008 21 of 29 NXP Semiconductors TFA981 0 Audio amplifier 2 x 12 W 010aaa195 10 102 103 104 105 fi Hz Vp 12V RL 82 P 1W 1 OUT1 2 OUT2 Fig 31 Total harmonic distortion noise as a function of frequency 010aaa196 10 2 10 2 1071 1 10 Po W Vp 12V RL 8Q fj 1 kHz 1 OUT1 2 OUT2 Fig 32 Total harmonic distortion as a function of output power 14 7 Typical application diagram TFA
24. nued Tamb 25 C Vp 12V R 8 Q Figure 33 unless otherwise specified Symbol Parameter Conditions Min Typ Max Unit tresp response time transition PWM output from 60 ns LOW to HIGH 50 ns Vi 2 70 mV V 3 3V transition PWM output from 60 ns HIGH to LOW 50 E ns Vi 70 mV Vi 3 3V tw min minimum pulse width PWM output 60 ns Rpson drain source on state n 0 28 0 35 Q resistance Npo output power output power 2 x 9 W into 8 Q 2 87 89 efficiency Po Po nom 1 High side and low side power switch have the same series resistance 2 Output power measured across the loudspeaker load Output power is measured indirectly via Rpson 12 3 AC characteristics measured in a typical application Table 11 AC characteristics measured in typical application Tamb 25 C Vp 12 V Ry 8 Q fosc 550 kHz Figure 33 unless otherwise specified Symbol Parameter Conditions Min Typ Max Unit Vp supply voltage Vp Vpppx Vsspx 8 12 20 V Po RMS RMS output power RL 8 Q Vp 12V 9 5 W THD 10 Two channel driven no heat sink required Po output power Vp 12V RL 8Q THD 10 8 5 9 5 W THD 1 96 6 5 7 5 W Vp 14V RL 8Q 12 W THD 10 thermally limited Vp 16 V RL 8Q 15 W THD 10 thermally limited Vp 12V RL 6Q 12 W THD 10 thermally limited Vp 12 V RL 4Q 15 W THD 10 thermally limited THD N total harmonic Po is 1 W f 1 kHz AES17 0 04 0 1 96 distor
25. oa ewe ka AAA 29 Please be aware that important notices concerning this document and the product s described herein have been included in section Legal information NXP B V 2008 All rights reserved For more information please visit http www nxp com For sales office addresses please send an email to salesaddresses nxp com Date of release 20 February 2008 Document identifier TFA9810 3
26. oltage Vpppx Vsspx V TFA9810_3 NXP B V 2008 All rights reserved Product data sheet Rev 03 20 February 2008 19 of 29 NXP Semiconductors TFA981 0 14 3 14 4 Audio amplifier 2 x 12 W e RH load resistance Q e Robson drain source on state resistance Q e R series resistance Q Example A 4 Q speaker in BTL configuration can be used up to a supply voltage of 12 V without running into current limiting Current limiting clipping will avoid audio holes but it causes a sound distortion similar to voltage clipping Speaker configuration and impedance For a flat frequency response second order Butterworth filter it is necessary to change the low pass filter components L c and C c according to the speaker configuration and impedance Table 12 shows the practical required values Table 12 Filter component values Configuration Impedance Q Lic uF Cic nF BTL 4 10 1500 6 16 1000 8 22 680 Differential input For a high common mode rejection ratio and a maximum of flexibility in the application the audio inputs of the application are fully differential The input configuration for a differential input application is illustrated in Figure 28 OUT1P D IN1P IN1N AUDIO DSP OUT1N 010aaa021 Fig 28 Input configuration for differential input 14 5 Single ended input TFA9810 3 When using an audio source w
27. rt data sheet is intended for quick reference only and should not be relied upon to contain detailed and full information For detailed and full information see the relevant full data sheet which is available on request via the local NXP Semiconductors sales office In case of any inconsistency or conflict with the short data sheet the full data sheet shall prevail 18 3 Disclaimers General Information in this document is believed to be accurate and reliable However NXP Semiconductors does not give any representations or warranties expressed or implied as to the accuracy or completeness of such information and shall have no liability for the consequences of use of such information Right to make changes NXP Semiconductors reserves the right to make changes to information published in this document including without limitation specifications and product descriptions at any time and without notice This document supersedes and replaces all information supplied prior to the publication hereof Suitability for use NXP Semiconductors products are not designed authorized or warranted to be suitable for use in medical military aircraft space or life support equipment nor in applications where failure or malfunction of an NXP Semiconductors product can reasonably be expected to result in personal injury death or severe property or environmental 19 Contact information damage NXP Semiconductors accepts no liability for incl
28. tion plus noise brick wall filter Npo output power Po 9W 87 89 efficiency Gu cl closed loop voltage Vi 100 mV RMS f 1 kHz 19 19 7 21 dB gain Vn o output noise voltage Inputs shorted 150 uV AES17 brick wall filter TFA9810_3 NXP B V 2008 All rights reserved Product data sheet Rev 03 20 February 2008 17 of 29 NXP Semiconductors TFA981 0 Audio amplifier 2 x 12 W Table 11 AC characteristics measured in typical application continued Tamb 25 C Vp 12 V Ri 8 Q fosc 550 kHz Figure 33 unless otherwise specified Symbol Parameter Conditions Min Typ Max Unit S N signal to noise ratio Vo 10 V RMS gain 20 dB 96 dB SVRR supply voltage ripple Vrippie 2 V p p fi 1 kHz 0l 34 45 dB rejection Ocs channel separation Po 1 W fi 1 kHz 55 70 dB 1 Minimum value determined by R5 R10 R17 R22 equalling 1 and R7 R14 R18 R20 equalling 1 96 13 Quality specification In accordance with SNW FQ 61 1 E if this type is used as an audio amplifier The number of the quality specification can be found in the Quality Reference Handbook The handbook can be ordered using the code 9398 510 63011 14 Application information 14 1 Output power estimation For BTL configuration the output power just before clipping can be estimated using Equation 1 R 2 sc lS Ho x leri somes BTL e PTS Where Vp supply voltage Vpppr
29. usion and or use of NXP Semiconductors products in such equipment or applications and therefore such inclusion and or use is at the customer s own risk Quick reference data The Quick reference data is an extract of the product data given in the Limiting values and Characteristics sections of this document and as such is not complete exhaustive or legally binding Applications Applications that are described herein for any of these products are for illustrative purposes only NXP Semiconductors makes no representation or warranty that such applications will be suitable for the specified use without further testing or modification Limiting values Stress above one or more limiting values as defined in the Absolute Maximum Ratings System of IEC 60134 may cause permanent damage to the device Limiting values are stress ratings only and operation of the device at these or any other conditions above those given in the Characteristics sections of this document is not implied Exposure to limiting values for extended periods may affect device reliability Terms and conditions of sale NXP Semiconductors products are sold subject to the general terms and conditions of commercial sale as published at http www nxp com profile terms including those pertaining to warranty intellectual property rights infringement and limitation of liability unless explicitly otherwise agreed to in writing by NXP Semiconductors In case of any incons
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