RX-AUDIO-2.4 Datasheet and User Manual for RX-AUDIO-2.4
Contents
1. RE LE SS RX AUDIO 2 4 P N 650201005G NOTES to APPLICATION CIRCUIT 1 At USER BIT pin serialized data stream max 5Kbps is available as delivered from corresponding USER_BIT pin of Transmitter with no interference on digitalized audio Data examples a remote control command b title of musical composition being transmitted etc 2 Pin 4 FORMAT pin 5 OB pins 14 to 17 ID3 2 1 0 are functional only when used transmitter is TX AUDIO 2 4 AE Code 650201062G Functions are NOT available when transmitter is TX AUDIO 2 4 Code 650201004G 3 RX AUDIO 2 4 modules Code 650201005G delivered prior of MID 2008 are using pins 1 to 20 ONLY pins 21 to 32 NOT connected From today on will be delivered version second series with the same Code 650201004G as default First series pins 1 to 20 Second series full pin out Le caratteristiche tecniche possono subire variazioni senza preavviso La AUREL S p A non si assume la responsabilit di danni causati dall uso improprio del dispositivo Technical features are subject to change without notice AUREL S p A does not assume responsibilities for any damages caused by the device s misuse AUREL S p A Via Foro dei Tigli 4 47015 Modigliana FC ITALY 12 05 2008 Tel 39 0546 941124 Fax 39 0546 941660 Pag 5di5 GUI LE L RX AUDIO 2 4 P N 650201005G Application information When you design the transmitter module in wireless speakers and headphones pay attenti2. L channel of audio output from DAC directly Useful to feed audio signal to a power amplifier A DC blocking capacitor gt 10 uF should be added unless the load is high impedance than 10KOhm Ground R channel of audio output from DAC directly Useful to feed audio signal to a power amplifier A DC blocking capacitor gt 10 uF should be added unless the load is high impedance than 10KOhm Pull low for DIP mode channel selection internal pull high IF in DIP MODE see table for channel selection settings used to select channel see table for channel selection settings Pull low for ID selection internal pull high Only Receiver s with same 650201062G transmitter ID combination will be reproduce transmitted audio See channel mode setting table for detail Pull high for TACT mode and low for DIP mode internal pull high see table for channel selection settings See channel mode setting table for detail Pull high to enable scanning to next proper channel internal pull high see table for channel selection settings See channel mode setting table for detail Pull high to enable automatically channel scan poor receiving condition internal pull high see table for channel selection settings Ground Headphone amplifier Supply Voltage at 2 2 to 3 6Vdc If supplied voltage is less then 2 2Vdc amplifier will go in battery low protection mode Ground R channel of audio out from headphone driver directly A DC blockin
3. AUEL RE LE SS RX AUDIO 2 4 P N 650201005G Datasheet and User Manual for RX AUDIO 2 4 Features 1 Non compression for high sound quality with delay time 0 5 ms 2 Digital audio with 44 1 KHz sampling rate and 16 bit resolution 3 FSK digital demodulation 4 Embedded antenna for cost effect and fast development 5 Improved performance in harsh environment by antenna diversity 6 8 selectable channels 7 Low power consumption for mobile application 8 To be used with 650201004G TX AUDIO 2 4 and 650201062G TX AUDIO 2 4 AE transmitter modules Specification Model RX AUDIO 2 4 Supply voltage 5 0 1 Vdc and 2 2 to 3 6Vdc headphones Current consumption 65 mA typ Operating temperature 10 60 C Frequency range 2400 2483 5 MHz Modulation FSK Channel number 8 Channel spacing 9 MHz Frequency stability 100 KHz Sensitivity 83 dBm typ Output impedance headphones 12 Ohm Output level headphones 1 8 Vpp max Response 20 Hz 20 KHz Dynamic range 92 dB typ Separation 80 dB typ SN ratio 87 dB typ When used with TX AUDIO 2 4 650201004G Board dimensions 47 x 32 x 7 mm Le caratteristiche tecniche possono subire variazioni senza preavviso La AUREL S p A non si assume la responsabilita di danni causati dall uso improprio del dispositivo Technical features are subject to change without notice AUREL S p A does not assume responsibilities for any damages caused by the device s misuse AUREL S p A Via Foro
4. WO SW1 SW2 in CLOSED to GND Condition SW2 is the most significant bit of the Hexadecimal NEGATED combination Le caratteristiche tecniche possono subire variazioni senza preavviso La AUREL S p A non si assume la responsabilita di danni causati dall uso improprio del dispositivo Technical features are subject to change without notice AUREL S p A does not assume responsibilities for any damages caused by the device s misuse AUREL S p A Via Foro dei Tigli 4 47015 Modigliana FC ITALY 12 05 2008 Tel 39 0546 941124 Fax 39 0546 941660 Pag 3 di 3 AUREL RX AUDIO 2 4 R L E s S P N 650201005G Application Circuit ra bl lt a El m z Fy T di Fi fia Pim LAER HA FOLH AT 7 a i a SE ci We co ER c3 cd LI i T Our T 1 fu 100 we Liew 47 Gor Lo a da I high for power on a Ar E E and low for mute ni h fs E ns i rls K EPEAKER SPEAKER EDR i iint Wien E indicator for power on qw k e az connect to pin 6 or pind Ty inpul Le caratteristiche tecniche possono subire variazioni senza preavviso La AUREL S p A non si assume la responsabilita di danni causati dall uso improprio del dispositivo Technical features are subject to change without notice AUREL S p A does not assume responsibilities for any damages caused by the device s misuse AUREL S p A Via Foro dei Tigli 4 47015 Modigliana FC ITALY 12 05 2008 Tel 39 0546 941124 Fax 39 0546 941660 Pag 4di4 AUEL
5. dei Tigli 4 47015 Modigliana FC ITALY 12 05 2008 Tel 39 0546 941124 Fax 39 0546 941660 Pag 1di1 AUREL RELESS Pin configuration Pin 1 di 12 13 14 15 16 17 18 19 20 21 22 23 24 25 26 27 28 29 30 31 32 Pin name PWR ON MUTE USER_BIT FORMAT OB TACT_SW VCC DAC_L GND DAC_R SW2 SW1 SWO ID3 ID2 ID1 IDO CH_MODE TACT_SCAN CT_INU GND DC_IN GND CH_R GND CH_L DAC_L DAC_R AMP_R AMP_L GND TACT_SW RX AUDIO 2 4 P N 650201005G Pin description The level will be logical high 2 7V with 1 2 seconds delay after DC power supply is supplied to the module It can then be used to turn on the audio power amplifier to prevent pop noise when turn on RX module The level will be logical low during poor receiving condition A few functions can be presented with simple circuits such as receiving indicator extra noise reduction when TX is turn off etc The data stream output which is correspondent to the data stream applied to USER_BIT of TX module Max data rate is 5Kbps Pull up for scrambling with 01 pattern Pull down for digital audio scrambled at 650201062G transmitter with random pattern internal pull high Pull down to enable reception of out band channel 650201062G transmitter for testing purpose internal pull high Impulse low to scan channel for TACT mode internal pull high see table for channel setting mode 5 0 1Vdc
6. g capacitor gt 100 uF should be added Ground L channel of audio out from headphone driver directly A DC blocking capacitor gt 100 uF should be added Same as pin 8 internally connected Same as pin 10 internally connected Headphone driver R channel input Headphone driver L channel input Ground Same as pin 6 Le caratteristiche tecniche possono subire variazioni senza preavviso La AUREL S p A non si assume la responsabilita di danni causati dall uso improprio del dispositivo Technical features are subject to change without notice AUREL S p A does not assume responsibilities for any damages caused by the device s misuse AUREL S p A Via Foro dei Tigli 4 47015 Modigliana FC ITALY Tel 39 0546 941124 Fax 39 0546 941660 12 05 2008 Pag 2 di2 AUEL RE LE SS RX AUDIO 2 4 P N 650201005G Channel mode setting table Channel mode CH_MODE TACT_SCAN CT_INU Function pin 18 pin 19 pin 20 DIP Set SWO SW1 and SW2 to change dad A a channel SEE NOTE TACT X GND X Switch channel by channel when each low impulse is applied to TACT_SW pin 6 TACT SCAN x x GND Automatically search channel when low impulse is applied to TACT_SW pin 6 AUTO SCAN v X X Automatically search channel when poor receiving condition X floating pin Note The channel at lower frequency about 2410MHz is with SWO SW1 SW2 in OPEN Condition pull up installed The higher frequency channel about 2473MHz is with S
7. on to the following considerations Do not let any metal objects too close to antenna Transmitter module must be kept away from speaker over 3 cm to avoid magnetic interference Power supply to receiver module must be independent different from the power of amplifier Avoid to put any cable or circuit nearby antenna 1 2 cm AUNE Antenna area marked by diagonal lines N Ox oN 2 I 0000000000000000 0000000000000000 ORION Mod RX AUDIO 2 4 Le caratteristiche tecniche possono subire variazioni senza preavviso La AUREL S p A non si assume la responsabilit di danni causati dall uso improprio del dispositivo Technical features are subject to change without notice AUREL S p A does not assume responsibilities for any damages caused by the device s misuse AUREL S p A Via Foro dei Tigli 4 47015 Modigliana FC ITALY 12 05 2008 Tel 39 0546 941124 Fax 39 0546 941660 Pag 6 di 6
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