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1 Click here for production status of specific part numbers. MAX8A Evaluation Kit Evaluates: MAX8A, MAX8 General Description The MAX8A evaluation kit (EV kit) is a fully assembled and tested circuit for evaluating the MAX8/ MAX8A MUX switch for USB-C audio adapter applications. The device features automatic MIC-GND orientation and headphone impedance detection, Beyondthe-Rails signal capability, and surge protection on pins attached to the USB-C connector. This EV kit enables fast and easy evaluation of the MAX8/MAX8A switches in USB-C audio applications. The EV kit is populated with MAX8A. The MAX8 and MAX8A are pin-to-pin and register compatible. Users can install their own MAX8 for evaluation. Features Automatic MIC/GND Orientation Detection MIC Line Bias Check Safeguards Against Shorting MIC to GND.mm Audio Jack for Testing with Audio Signals Onboard USB Receptacles for Passing and Measuring Data Signals Proven PCB Layout Fully Assembled and Tested Ordering Information appears at end of data sheet. Beyond-the-Rails is a trademark of Maxim Integrated Products, Inc. Quick Start Required Equipment The following equipment is required to verify the basic functionality of this EV kit: V capable power supply Host device with IC communication support DMM or continuity tester Optional Equipment The following equipment can be used for more complete testing of this EV kit: USB Flash drive or other device with a USB-A male connector USB A-to-B cable USB C cable TRRS.mm audio cable TRRS.mm audio device with.mm to USB-C passive adapter Procedure The EV kit is fully assembled and tested. Follow the steps below to verify board operation: ) Verify the positions of the configuration resistor pairs R and R, R and R, and R and R8. a) For evaluating MAX8, R, R, and R should be installed. b) For evaluating MAX8A, R, R, and R8 should be installed. ) Verify shunts are installed on jumpers JU and on JU in the - position. JU selects the source of the V CC supply. ) Connect the positive lead of a.7 to V power supply to TP and the negative lead to TP, then safely turn on the supply. ) Connect SCL of the IC device to TP and SDA to TP7; or use the -pin connector. ) Read register x using the IC read address xb. If the data read matches the DEVICE_ID value of the installed device (Table of the MAX8/MAX8A data sheet), the EV kit is configured correctly. 9-9; Rev ; /8

2 MAX8A Evaluation Kit Evaluates: MAX8A, MAX8 To test automatic audio headset detection and switch configuration, use the following procedure: ) After establishing communication with the EV kit device, verify that automatic headset detection is enabled. Enable it if needed. ) Supply an audio signal to the.mm jack J7 on the EV kit. ) Insert a TRRS headset with USB-C passive adapter (this will not work for active adapters) and verify the audio signal is routed to the headset. Detailed Description of Hardware The MAX8A EV kit is a fully assembled and tested PCB for evaluating the MAX8 and MAX8A USB-C audio MUX switches. Although the MAX8 and MAX8A have slightly different features, the same hardware can be used to evaluate both devices. By installing combinations of Ω resistors, the signals will be routed correctly for the selected device. Hardware Connectors The MAX8A EV kit contains several USB connectors and a.mm audio jack to conveniently check the functionality of different signal paths. USB Connectors A USB-C female connector connects to the top- (DP_T, DM_T) and bottom-side (DP_B, DM_B) D+/D- data lines, SBU lines, and the CC pin to the MAX8/MAX8A as they would in a typical application. Alternatively, two USB-B female connectors are also available to provide these signals independently. J connects to DP_B and DM_B, and J connects to DP_T and DM_T. Two USB-A female connectors allow for testing data transfer to a USB flashdrive or similar device with a USB-A male connector. J connects to the bottom side data pins and J connects to the top side data pins..mm Audio Jack The EV kit also includes a.mm jack for evaluating the audio signal routing action. The TRRS jack J7 simplifies injecting an audio signal into the EV kit. When a.mm audio headset is detected on the USB-C input by means of a passive adapter, the signal coming into J7 will be routed to the USB-C connector and the headset. Table. Jumper Configurations JUMPER SHUNT POSITION DESCRIPTION JU JU JU JU JU JU JU7 JU8 JU9 *Default position Installed* Connects V CC of the device to the EV kit supply. Not Installed V CC of the device disconnected from EV kit supply. Installed Attaches a.9kω pullup resistor to V CC on INT of the MAX8A. Not Installed* No pullup on MAX8A INT pin. -* Connects EV kit supply to TP for an external supply voltage. - Connects EV kit supply to the.v line of the -pin connector. Installed Connects a.9kω pullup resistor from SCL to the.v line of the -pin connector. Not Installed* No pullup on SCL to.v line. Installed Connects a.9kω pullup resistor from SDA to the.v line of the -pin connector. Not Installed* No pullup on SDA to.v line. -* Ties U CC pin to V CC through a kω pullup resistor. Leave open or shunt - to use J CC. - Ties U CC pin to ground. Leave open or shunt - to use J CC. Installed* J CC is connected to U CC and pulled to voltage selected by JU. Not Installed U CC is floating or tied to voltage selected by JU. Installed* Connects GSNS_L (MAX8) or GSNS (MAX8A) to AGND. Not Installed GSNS_L (MAX8) or GSNS (MAX8A) not connected to AGND. Installed Connects GSNS_R (MAX8) to AGND. Not Installed* Connects GSNS_R (MAX8) to AGND. Maxim Integrated

3 MAX8A Evaluation Kit Evaluates: MAX8A, MAX8 Table. Test Point Assignments TEST POINT SIGNAL TEST POINT SIGNAL TP MIC TP INT (MAX8A only) TP AGND TP External supply connection TP TP V CC of EV kit board TP RA TP Ground TP TP TP7 TP8 TP9 GSNS_L (MAX8) or GSNS (MAX8A) GSNS_R (MAX8 only) TX (MAX8A only) V CC of U Ground TP TP TP7 TP8 Ground SCL SDA CC pin of connector J. Connects to CC of MAX8/MAX8A if a shunt is present on JU7. TP RX (MAX8A only) Ordering Information PART MAX8AEVKIT# TYPE EV Kit #Denotes RoHS compliant. Maxim Integrated

4 MAX8A Evaluation Kit Evaluates: MAX8A, MAX8 MAX8A EV Kit Bill of Materials ITEM REF_DES C-C - DNI/D NP QTY MFG PART # MFG VALUE DESCRIPTION YDKATA; CKO8NNN J, J - 87-BLF FCI CONNECT J, J EDAC J MILL-MAX J - SBH-PBPC-D-ST-BK AVX;SAMSUNG ELECTRO- MECHANICS UF SULLINS ELECTRONICS CORP. CAPACITOR; SMT (); CERAMIC CHIP; UF; V; TOL=%; TG=- DEGC TO +8 DEGC; TC=XR 87- CONNECTOR; FEMALE; THROUGH HOLE; USB RECEPTACLE; RIGHT BLF ANGLE; PINS 9--- CONNECTOR; FEMALE; THROUGH HOLE; USB-B TYPE; SINGLE DECK; RIGHT ANGLE; PINS CONNECTOR; FEMALE; SMT; ; RIGHT ANGLE; PINS SBH-PBPC- D-ST-BK J7 - SJ-7RS CUI INC. SJ-7RS 7 JU, JU, JU, JU, JU7-JU9-7 8-HLF FCI CONNECT 8-HLF 8 JU, JU - 8-HLF FCI CONNECT 8-HLF CONNECTOR; MALE; THROUGH HOLE; HEADER CONNECTOR; STRAIGHT; PINS; EDGE FOOTPRINT CONNECTOR; FEMALE; THROUGH HOLE; SJ-7 SERIES;. MM AUDIO JACK; RIGHT ANGLE; PINS CONNECTOR; MALE; THROUGH HOLE; 8 SERIES; BERGSTIK II HEADER; STRAIGHT; PINS CONNECTOR; MALE; THROUGH HOLE; BERGSTIK BREAKAWAY HEADER; STRAIGHT; PINS LUMEX OPTOCOMPONENTS INC SML- LXGW-TR DIODE; LED; STANDARD; GREEN; SMT (); PIV=.V; IF=.A; - DEGC TO +8 DEGC 9 LED-LED - SML-LXGW-TR R, R, R8 - RC8JR-7RL YAGEO PHYCOMP RESISTOR; 8; OHM; %; JUMPER;.W; THICK FILM CRCW8KFK; ERJ-ENFV; VISHAY DALE; PANASONIC; R, R9-R - MCREZHF;RC8FR-7KL ROHM; YAGEO K RESISTOR; 8; K; %; PPM;.W; THICK FILM CRCW8K9FK;MCREZHF9; VISHAY DALE;ROHM R7, R, R - RC8FR-7K9L SEMICONDUCTOR;YAGEO.9K RESISTOR; 8;.9K OHM; %; PPM;.W; THICK FILM CRCW8KFK; MCREZHF; VISHAY DALE; ROHM SEMI; R - ERJ-ENFV; RC8FR-7KL MURATA; YAGEO K RESISTOR; 8; K; %; PPM;.W; THICK FILM TP, TP8, TP - KEYSTONE N/A TEST POINT; PIN DIA=.IN; TOTAL LENGTH=.IN; BOARD HOLE=.IN; GREEN; PHOSPHOR BRONZE WIRE SILVER PTE FINISH; TP - 8 KEYSTONE N/A TEST POINT; PIN DIA=.IN; TOTAL LENGTH=.IN; BOARD HOLE=.IN; GREY; PHOSPHOR BRONZE WIRE SILVER PTE FINISH; TP, TP7, TP, TP8 - KEYSTONE N/A 7 TP, TP - KEYSTONE N/A TEST POINT; PIN DIA=.IN; TOTAL LENGTH=.IN; BOARD HOLE=.IN; YELLOW; PHOSPHOR BRONZE WIRE SILVER PTE FINISH; TEST POINT; PIN DIA=.IN; TOTAL LENGTH=.IN; BOARD HOLE=.IN; RED; PHOSPHOR BRONZE WIRE SILVER PTE FINISH; 8 TP - 7 KEYSTONE N/A TEST POINT; PIN DIA=.IN; TOTAL LENGTH=.IN; BOARD HOLE=.IN; BLUE; PHOSPHOR BRONZE WIRE SILVER PTE FINISH; 9 TP, TP, TP7 - KEYSTONE N/A TEST POINT; PIN DIA=.IN; TOTAL LENGTH=.IN; BOARD HOLE=.IN; ORANGE; PHOSPHOR BRONZE WIRE SILVER PTE FINISH; TP9, TP, TP - KEYSTONE N/A TEST POINT; PIN DIA=.IN; TOTAL LENGTH=.IN; BOARD HOLE=.IN; BCK; PHOSPHOR BRONZE WIRE SILVER PTE FINISH; TP - KEYSTONE N/A TESTPOINT WITH.8MM HOLE DIA, RED, MULTIPURPOSE; U - MAX8EWA+ MAXIM MAX8EW A+ EVKIT PART - IC; INFC; MUX SWITCH FOR USB TYPE-C; AUDIO ADAPTER ACCESSORIES; WLP; PKG. CODE: WR+; PKG. OUTLINE: -8 PCB - MAX8A MAXIM PCB PCB:MAX8A R, R, R DNP RC8JR-7RL YAGEO PHYCOMP RESISTOR; 8; OHM; %; JUMPER;.W; THICK FILM TOTAL Maxim Integrated

5 MAX8A Evaluation Kit Evaluates: MAX8A, MAX8 D J 9--- TP7 TP JU R 8-HLF C UF JU7 CC_U D CC SCL 8-HLF TP8 CC DGND U MAX8AEWA+ SDA C SDA DM_T R DNI E C B E A B DM_AP MIC R JU 8-HLF K JU C SCL SDA UF SJ-7RS TP TP LED SML-LXGW-TR A C GSNS_R J 87-BLF C LED UF R SML-LXGW-TR A C J J 87-BLF 9--- DM_B DM_AP DP_B DP_AP J J7 JU9 TP TP TP JU8 TP TP 7 8 TP8 K JU 8-HLF TX RX C SCL D SBU E D D DP_AP DM_AP SBU E A C C B RA DP_AP GSNS_L R DNI GM_SL_RX SBU B A TP R DNI MIC RA 8-HLF DM_AP DP_AP DP_T DM_T SBU GSNS_L K VMC R9 VMC R K DP_B DM_B RX JU LED SML-LXGW-TR A C 8-HLF 8-HLF TP TP7 C UF DM_T DP_T LED R SML-LXGW-TR A C K 8-HLF VMC R R.9K.9K GSNS_R R TX TP B VMC INTB SCL J SBH-PBPC-D-ST-BK TP9 VMC VMC SDA DP_T E DP_T DM_T DP_AP DM_AP JU R7.9K 8-HLF INTB SBU R8 TP MG_SL_TX SBU SBU A A SBU_MG MIC SBU_GM INT RA DP_AP GSNS TX RX GM_SR SHIELD VBUS D- D+ GND SHIELD VBUS D- D+ GND SHIELD A GND GND B A TX+ RX+ B A TX- RX- B A VBUS VBUS B9 A CC SBU B8 SBU A D+ D- B7 DM_B A7 D- D+ B DP_B A8 SBU CC B CC A9 VBUS VBUS B A RX- TX- B A RX+ TX+ B A GND GND B TP MAX8A EV Kit Schematic DP_B DM_B MG_SR DM_AP AGND Maxim Integrated

6 MAX8A Evaluation Kit Evaluates: MAX8A, MAX8 MAX8A EV Kit PCB Layout Diagrams MAX8A EV Kit Top Silkscreen MAX8A EV Kit Top MAX8A EV Kit Layer Maxim Integrated

7 MAX8A Evaluation Kit Evaluates: MAX8A, MAX8 MAX8A EV Kit PCB Layout Diagrams (continued) MAX8A EV Kit Layer MAX8A EV Kit Bottom MAX8A EV Kit Bottom Silkscreen Maxim Integrated 7

8 MAX8A Evaluation Kit Evaluates: MAX8A, MAX8 Revision History REVISION NUMBER REVISION DATE DESCRIPTION PAGES CHANGED /8 Initial release For pricing, delivery, and ordering information, please visit Maxim Integrated s online storefront at Maxim Integrated cannot assume responsibility for use of any circuitry other than circuitry entirely embodied in a Maxim Integrated product. No circuit patent licenses are implied. Maxim Integrated reserves the right to change the circuitry and specifications without notice at any time. Maxim Integrated and the Maxim Integrated logo are trademarks of Maxim Integrated Products, Inc. 8 Maxim Integrated Products, Inc. 8

Evaluates: MAX MAX20326 Evaluation Kit. General Description. Quick Start. Features. EV Kit Contents. Required Equipment.

Evaluates: MAX MAX20326 Evaluation Kit. General Description. Quick Start. Features. EV Kit Contents. Required Equipment. General Description The MAX20326 evaluation kit (EV kit) provides a convenient way to evaluate the MAX20326 dual precision bus accelerator IC. The EV kit breaks out the pins of the IC to test points enabling