EVBUM2003 - NCN1154MUTGEVB Evaluation Board User`s Manual
Contents
1. 10 m N b right in 5 D L left in VCC Banana Jacks Control Logic IN1 11 Toggle Switch sw2 vec IN2 7 Toggle Switch sW1 www BDTTfzom ON NCN1154MUTGEVB NCN1154 BOARD CONNECTIONS SUPPLY VCC GND This is the positive and the return connection for power supply Pins 3 and 9 SETUP SW1 This is the toggle switch for IN2 Pin 7 SW2 This is the toggle switch for IN1 Pin 11 SIGNALS COMMON This standard USB connector is the common data and audio lines Pins 8 and 10 USB This USB connector Male A type is the high speed USB signaling path Pins 1 and 5 UART This USB connector Male B type is dedicated for Tx and Rx data lines for UART signals Pins 2 and 4 LEFT IN This connector is the left audio signal Pin 12 RIGHT IN This connector is the right audio signal Pin 6 www BD Tt tom ON NCN1154MUTGEVB NCN1154 TEST PROCEDURE Eguipment needed Power Supply Digital Ohm Meter Desktop or Laptop with Windows or higher USB Key USB Headset BACKGROUND IN1 amp IN2 TRUTH TABLE DER K AK R S K SAK T T m Test m Connect the power supply at 3 6 V from Vcc to GND The supply current should be less than 35 uA 2 Turn SW1 and SW2 to G ground position The impedance measured from COM to D Tx and Lis over 10 MQ The impedance measured from COM to D Rx and R is over 10 MQ The impedance2. NCN1154MUTGEVB NCN1154 DP3T USB 2 0 High Speed Audio Switch Evaluation Board User s Manual Prepared by Bertrand RENAUD On Semiconductor OVERVIEW The NCN1154 is a DP3T switch for combined true ground audio USB 2 0 high speed data and UART applications It allows portable systems to use a single port to pass either USB data or audio signals from an external headset The switch is capable of passing signals with negative voltages as low as 2 V below ground The NCN1154 features shunt resistors on the audio ports These resistors are switched in when the audio channel is off ON Semiconductor hitp onsemi com EVAL BOARD USER S MANUAL and provide a safe path to ground for any charge that may build up on the audio lines This reduces Pop amp Click noise in the audio system The device has an extended Vcc range which can operate off Vcc up to 4 2 V while passing true ground audio signals down to 2 V The NCN1154 is housed in a space saving ultra low profile 1 7 x 2 0 x 0 5 mm 12 pin DEN package Figure 1 Board Picture Semiconductor D ik CO m ON Order Number July 2010 Rev 0 EVBUM2003 D NCN1154MUTGEVB NCN1154 BOARD SCHEMATIC Banana Jacks GND VCC Receptacle J4 VBUS E D Receptacle J6 1 4 D 1 1 GND Receptacle J5 E ESD ESD 1105 1105 2 VBUS 2 2 D E N GND 4 2 COM
3. eath associated with such unintended or unauthorized use even if such claim alleges that SCILLC was negligent regarding the design or manufacture of the part SCILLC is an Equal Opportunity Affirmative Action Employer This literature is subject to all applicable copyright laws and is not for resale in any manner PUBLICATION ORDERING INFORMATION LITERATURE FULFILLMENT American Technical Support 800 282 9855 Toll Free ON Semiconductor Website www onsemi com Literature Distribution Center for ON Semiconductor USA Canada P O Box 5163 Denver Colorado 80217 USA Europe Middle East and Africa Technical Support Order Literature http Wwww onsemi com orderlit Phone 303 675 2175 800 344 3860 Toll Free USA Canada Phone 421 33 790 2910 k Fax 303 675 2176 or 800 344 3867 Toll Free USA Canada Japan Customer Focus Center For additional information please contact your local Email orderlit onsemi com Phone 81 3 5773 3850 Sales Representative www BDTIC com ON
4. measured from L amp R to GND is closed to 118 Q 3 Turn SW1 to Vcc and keep SW2 to G ground The impedance measured from COM to D is closed to 5 5 The impedance measured from COM to D is closed to 5 5 Q The impedance measured from COM to Tx and Lis over 10 MQ The impedance measured from COM to Rx and R is over 10 MQ The impedance measured from L amp R to GND is closed to 118 4 Place a USB key connected to COMMON terminal J6 and connect the USB terminal J4 to the laptop or desktop The device is being recognized Remove both USB cable and USB key for next measurement 5 Keep SW1 to Vcc and turn SW2 to Vcc The impedance measured from COM to Tx is closed to 5 5 The impedance measured from COM to Rx is closed to 5 5 Q The impedance measured from COM to D and L is over 10 MQ The impedance measured from COM to D and R is over 10 MQ The impedance measured from L amp R to GND is closed to 118 Q 6 Place a USB key connected to COMMON terminal J6 and connect the UART terminal J5 to the laptop or desktop The device is being recognized Remove both USB cable and USB key for next measurement 7 Turn SW1 to G ground and keep SW2 to The impedance measured from COM to Lis closed to 3 Q The impedance measured from COM to R is closed to 3 Q The impedance measured from COM to D and Tx is over 5 MQ The impedance measured from COM to D and Rx is over 5 MQ The impedance measured f
5. rom L amp R to GND is over 5 MQ www BDTTf zom ON NCN1154MUTGEVB NCN1154 COMPONENTS SELECTION Input Capacitor 0 1 uF X5R ceramic capacitor or larger must bypass Vcc input to the ground This capacitor should be placed as close as possible to this input ESD Diode These devices have limited built in ESD protection an external bi directional ESD IEC diode is recommended on COM and COM pin The demoboard includes six additional ESD diodes for test purpose which are not required by the application The ESD11N is designed to protect voltage sensitive components that require ultra low capacitance from ESD and transient voltage events Excellent clamping capability low capacitance low leakage and fast response time make these parts ideal for ESD protection on designs where board space is at a premium Because of its low capacitance it is suited for use in high frequency designs such as USB 2 0 high speed and antenna line applications NCN1154 BILL OF MATERIAL Manufacturer Description Value Tolerance Footprint Part Number IC IC High Speed Switches Speed Switches UDFN 12 12 ON Semiconductor Semiconductor D1 02 D4 05 06 08 LT ESD Diode TT Ss Semiconductor OSTSG D10 D12 C1 C3 1 Ceramic capacitor Ceramic Ceramic capacitor AVX Corporation 04023C103KAT2A L LS LT J6 1 USB Connector Male ANG NA NA A Type 896 43 004 90 000000 Receptable J4 J5 2 USB Connec
6. tor Male NA NA B Type Molex Waldom 67265 2001 VERT Receptable BJ12 Single Banana Pomona Electronics 2142 9 swsw sw2 ITT ITTCANNON 510 011 580 03011MS8QP1 SS E Sa 01 REV A 2 Layers NCN1154 PCB LAYOUT GUIDELINES Electrical Layout Considerations Implementing a high speed USD device requires paying attention on USB lines and traces to preserve signal integrity The demonstration board serves as layout example and can support the design engineers to preserve high speed performances Electrical layout guidelines are The bypass capacitor must be placed as close as possible to the Vcc input pin for noise immunity The characteristic impedance of each High Speed USB segment must be 45 Q All corresponding D D line segment pairs must be the same length The use of vias to route these signals should be avoided The use of turns or bends to route these signal should be avoided The ground plane of the PCB will be used to determine the characteristics impedance of each line www BD Tt tom ON NCN1154MUTGEVB NCN1154 DEMOBOARD PCB LAYOUT Board Reference EBT1745 01 REV A Figure 3 Top Layer Routing www BD TFt tom ON NCN1154MUTGEVB 0 7 COMMON gt ON Semiconductor B U S A LEFT IN Figure 4 Bottom Layer Routing ON Semiconductor and are registered trademarks of Semiconductor Components Industries LLC SCILLC reserves the right to make changes
7. without further notice to any products herein SCILLC makes no warranty representation or guarantee regarding the suitability of its products for any particular purpose nor does SCILLC assume any liability arising out of the application or use of any product or circuit and specifically disclaims any and all liability including without limitation special conseguential or incidental damages Typical parameters which may be provided in SCILLC data sheets and or specifications can and do vary in different applications and actual performance may vary over time All operating parameters including Typicals must be validated for each customer application by customer s technical experts SCILLC does not convey any license under its patent rights nor the rights of others SCILLC products are not designed intended or authorized for use as components in systems intended for surgical implant into the body or other applications intended to support or sustain life or for any other application in which the failure of the SCILLC product could create a situation where personal injury or death may occur Should Buyer purchase or use SCILLC products for any such unintended or unauthorized application Buyer shall indemnify and hold SCILLC and its officers employees subsidiaries affiliates and distributors harmless against all claims costs damages and expenses and reasonable attorney fees arising out of directly or indirectly any claim of personal injury or d
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