EVAL-ADAU7002Z

Evaluation Board User Guide UG-533 One Technology Way • P.O. Box 9106 • Norwood, MA 02062-9106, U.S.A. • Tel: 781.329.4700 • Fax: 781.461.3113 • www.analog.com Evaluating the ADAU7002 Using the EVAL-ADAU7002Z EVALUATION KIT CONTENTS GENERAL DESCRIPTION ADAU7002 evaluation board (EVAL-ADAU7002Z) EVAL-ADUSB2EBZ (USBi) communications adapter USB cable with Mini-B plug UG-533 user guide This user guide explains the design and setup of the ADAU7002 evaluation board. This evaluation board provides full access to all inputs and outputs on the ADAU7002. This evaluation board can be powered by a single 3.8 V to 6 V supply or by VDD of the pulse density modulation (PDM) input. The PC board is a 4-layer design, with a single ground plane and a single power plane on the inner layers. The board contains connectors for external microphones and headers for PDM input and I2S output. DOCUMENTS NEEDED ADAU7002 data sheet UG-533 user guide AN-1006 Applications Note, Using the EVAL-ADUSB2EBZ 11320-001 11320-002 EVALUATION BOARD TOP SIDE AND BOTTOM SIDE Figure 2. Evaluation Board Bottom Side Figure 1. Evaluation Board Top Side PLEASE SEE THE LAST PAGE FOR AN IMPORTANT WARNING AND LEGAL TERMS AND CONDITIONS. Rev. 0 | Page 1 of 12 UG-533 Evaluation Board User Guide TABLE OF CONTENTS Evaluation Kit Contents ................................................................... 1 Using the Evaluation Board .............................................................6 Documents Needed .......................................................................... 1 Power...............................................................................................6 General Description ......................................................................... 1 Inputs and Outputs .......................................................................6 Evaluation Board Top Side and Bottom Side ................................ 1 Serial Audio Interface ...................................................................6 Revision History ............................................................................... 2 Mode Select ....................................................................................6 Evaluation Board Block Diagrams ................................................. 3 Hardware Description.......................................................................7 Setting Up the Evaluation Board .................................................... 5 Jumpers ...........................................................................................7 Default Switch and Jumper Settings .......................................... 5 Integrated Circuits (IC) ................................................................7 Powering Up the Board ............................................................... 5 Evaluation Board Schematics and Artwork ...................................8 Connecting the Cables ................................................................. 5 Bill of Materials ............................................................................... 12 REVISION HISTORY 2/13—Revision 0: Initial Version Rev. 0 | Page 2 of 12 Evaluation Board User Guide UG-533 EVALUATION BOARD BLOCK DIAGRAMS 1.5V TO 3.3V CONFIG GND IOVDD PDM_CLK BCLK PDM INPUT PORT DIGITAL DECIMATION FILTERING I2S OUTPUT PORT PDM_DAT LRCLK ADAU7002 11320-003 SDATA Figure 3. Functional Block Diagram POWER SUPPLY LEFT DIGITAL MIC INPUT RIGHT DIGITAL MIC INPUT PDM INPUT I2S OUTPUT 11320-004 MODE SELECT Figure 4. Board Layout Block Diagram Rev. 0 | Page 3 of 12 Evaluation Board User Guide 11320-005 UG-533 Figure 5. Default Jumpers and Switches Rev. 0 | Page 4 of 12 Evaluation Board User Guide UG-533 SETTING UP THE EVALUATION BOARD DEFAULT SWITCH AND JUMPER SETTINGS Header J2 selects whether the board is to be powered by VDD of the PDM input or by an external source. The default setting for J2 is EXT—that is, to be powered from an external source (see Figure 5). Switch S1 selects whether the ADAU7002 is to be powered from 3.3 V or 1.8 V. Put the switch in the up position (the default position) to set the voltage level to 3.3 V (see Figure 5). The default mode for the EVAL-ADAU7002Z board is I2S output. Put a jumper across the top row of Header J7 (see Figure 5). POWERING UP THE BOARD 11320-007 To power up the board, connect a tip positive 3.8 V dc to 6 V dc power supply to Connector J8 on the bottom of the board (see Figure 6). Figure 7. PDM Header Connections for I S/TDM output are located on Header J5. Connect SDATA, BCLK, and LRCLK accordingly (see Figure 8). 11320-006 2 Figure 6. Power Connector J8 CONNECTING THE CABLES 11320-008 Connect a PDM audio source to the board via Header J1. Because the board is being powered externally, leave the VDD jumper open (see Figure 7). Figure 8. I2S TDM Header Rev. 0 | Page 5 of 12 UG-533 Evaluation Board User Guide USING THE EVALUATION BOARD POWER Power can be supplied to the EVAL-ADAU7002Z in two ways: • • When Header J2 is in the EXT position, power can be supplied by connecting a tip positive 3.8 V dc to 6 V dc power supply to Connector J8 on the bottom of the board. When Header J2 is in the PDM position, power can be supplied from the VDD output of your PDM source to the VDD pins on Header J1 (see Figure 9). 11320-010 CONNECT Figure 10. PDM Microphone Headers SERIAL AUDIO INTERFACE Serial audio signals in I2S or TDM format can be output via the serial audio interface header, J5 (see Figure 8). The ADAU7002 always operates in slave mode and must be provided LRCLK and BCLK. 11320-009 MODE SELECT Figure 9. PDM VDD Power INPUTS AND OUTPUTS The board has two audio inputs and one audio output. The ADAU7002 is capable of up to two channels of PDM input as well as eight channels of serial audio output in either I2S or TDM format. The mode select configuration header (J7) determines which slots of the TDM stream to output in. If the top row of the header has a jumper across it, the part is in I2S mode. The bottom four rows of Header J7 put the chip in TDM mode. The ADAU7002 outputs two channels of left-justified serial PCM audio on the TDM channels specified by the silkscreen. Row 2 outputs on Slot 1 and Slot 2, Row 3 outputs on Slot 3 and Slot 4, Row 4 outputs on Slot 5 and Slot 6, and Row 5 outputs on Slot 7 and Slot 8 (see Figure 11). Digital Microphones 11320-011 PDM digital microphones connect to the J4 and J6 standard 0.100" headers (see Figure 10). For example, the Analog Devices, Inc., ADMP521 digital microphone on the EVAL-ADMP521Z can plug directly into the header (see the ADMP521Z Evaluation Board Web page for more information). Figure 11. Mode Select Header Rev. 0 | Page 6 of 12 Evaluation Board User Guide UG-533 HARDWARE DESCRIPTION JUMPERS Table 1. Connector and Jack Descriptions Reference J1 J2 J3 J4, J6 J5 J7 J8 Functional Name PDM input Voltage source IOVDD PDM microphone inputs I2S/TDM Mode select Power connector Description Jumper used for PDM input signals and VDD source. Header used to choose powering the board from the PDM input or from the on-board regulator. Unpopulated header used for measuring IOVDD current. Headers that allow digital microphones to be connected to the evaluation board. Jumper used for serial audio output in either I2S or TDM format. Jumper used to choose between different modes of operation. See the Mode Select section. Tip positive 3.8 V dc to 6 V dc power connector. INTEGRATED CIRCUITS (IC) Table 2. IC Descriptions Reference U1 U2 Functional Name ADAU7002 ADP3336 Description PDM to I2S/TDM converter. Adjustable output low dropout regulator. Rev. 0 | Page 7 of 12 UG-533 Evaluation Board User Guide EVALUATION BOARD SCHEMATICS AND ARTWORK IOVDD 1/12: GND 2/11: Power 3/10: PDM_CLK 4/9: PDM_DAT 5/8: N/C 6/7: L/R Select (L=Hi, R=Lo) IOVDD Supply IOVDD 2 4 6 8 10 12 Left Mic in J3 J4 SOCKET_12WAY_UNSHROUD DUT 1 3 5 7 9 11 C1 EVAL-ADMP521Z interfaces IOVDD_PDM HEADER_6WAY_UNSHROUD 1 3 5 D1 VDD CLK DAT A2 A1 PDM PDM_CLK PDM_DAT C11 1.0uF 1.0uF 1.0uF 1.0uF LRCLK 2 4 6 B2 B1 U1 C1 IOVDD 1 3 5 R6 J7 47k5 R4 47k5 R5 1 3 5 7 9 2 4 6 8 10 I2S Format TDM Slots 1-2 TDM Slots 3-4 TDM Slots 5-6 TDM Slots 7-8 Used Used Used Used 11320-012 C8 J5 HEADER_6WAY_UNSHROUD C2 BCLK CONFIG One decoupling near each Mic jack. C7 SSM7002BCBZ SDATA D2 IOVDD C10 IOVDD Right Mic In 2 4 6 1 3 5 7 9 11 GND J6 SOCKET_12WAY_UNSHROUD 2 4 6 8 10 12 0.10uF J1 2x5 HEADER_10WAY_UNSHROUD Figure 12. Evaluation Board Schematic ADP3336 7 OUT1 8 IN1 IN2 OUT2 6 SD OUT3 FB GND 4 U2 RAPC722X 1 2 3 5 R3 140k R1 169k C3C2 10uF 0.10 uF TP2 TP1 R2 147k 1V8 S1 C5 SPDT 3V3 0.10uF C6 10uF C9 10uF 11320-013 J8 DVDD = +1.8V (shown) or +3.3 V Supply 2 3 1 C4 D1 J2 A B IOVDD_PDM IOVDD Figure 13. Evaluation Board Schematic—Power Supply Rev. 0 | Page 8 of 12 UG-533 11320-014 Evaluation Board User Guide 11320-015 Figure 14. Evaluation Board Layout—Top Assembly Figure 15. Evaluation Board Layout—Top Copper Rev. 0 | Page 9 of 12 Evaluation Board User Guide 11320-016 UG-533 11320-017 Figure 16. Evaluation Board Layout—Power Plane Figure 17. Evaluation Board Layout—Ground Plane Rev. 0 | Page 10 of 12 UG-533 11320-018 Evaluation Board User Guide 11320-019 Figure 18. Evaluation Board Layout—Bottom Copper Figure 19. Evaluation Board Layout—Bottom Assembly Rev. 0 | Page 11 of 12 UG-533 Evaluation Board User Guide BILL OF MATERIALS Table 3. Qty. 1 2 4 1 3 1 1 1 3 1 1 1 2 1 1 1 2 1 2 Reference C1 C2, C5 C7, C8, C10, C11 C4 C3, C6, C9 R3 R2 R1 R4, R5, R6 U1 U2 J7 J1, J5 J2 D1 J8 J4, J6 S1 TP1, TP2 Value 0.10 µF 0.10 µF 1.0 µF 10 nF 10 µF 140 kΩ 147 kΩ 169 kΩ 4.75 kΩ Description Multilayer ceramic 16 V X7R (0402) Multilayer ceramic 50 V X7R (0603) Multilayer ceramic 16 V X7R (0603) Multilayer ceramic 25 V NP0 (0603) Multilayer ceramic 10 V X7R (0805) Chip resistor 1% 100 mW thick film 0603 Chip resistor 1% 100 mW thick film 0603 Chip resistor 1% 100 mW thick film 0603 Chip resistor 1% 63 mW thick film 0402 Adjustable low dropout voltage regulator 10-way (2 × 5) unshrouded header 6-way (2 × 3) unshrouded header 3-position SIP header Schottky 30 V 0.5 A SOD123 diode Mini power jack 0.08" R/A TH 12-way (2 × 6) socket unshrouded SPDT slide switch PC mount Mini test point white 0.1" outer diameter Part Number GRM155R71C104KA88D ECJ-1VB1H104K GRM188R71C105KA12D C1608C0G1E103J GRM21BR71A106KE51L ERJ-3EKF1403V ERJ-3EKF1473V ERJ-3EKF1693V RMCF0402FT4K75 ADAU7002BCBZ ADP3336ARMZ-REEL7 PBC05DAAN, or cut PBC36DAAN PBC06DAAN, or cut PBC36DAAN PBC03SAAN, or cut PBC36SAAN MBR0530T1G RAPC722X PPPC062LFBN-RC EG1271 5002 Manufacturer Murata ENA Panasonic EC Murata ENA TDK Corp Murata ENA Panasonic EC Panasonic EC Panasonic EC Stackpole Analog Devices Analog Devices 3M 3M Sullins ON Semiconductor Switchcraft, Inc. 3M E-Switch Keystone Electronics ESD Caution ESD (electrostatic discharge) sensitive device. Charged devices and circuit boards can discharge without detection. Although this product features patented or proprietary protection circuitry, damage may occur on devices subjected to high energy ESD. Therefore, proper ESD precautions should be taken to avoid performance degradation or loss of functionality. Legal Terms and Conditions By using the evaluation board discussed herein (together with any tools, components documentation or support materials, the “Evaluation Board”), you are agreeing to be bound by the terms and conditions set forth below (“Agreement”) unless you have purchased the Evaluation Board, in which case the Analog Devices Standard Terms and Conditions of Sale shall govern. Do not use the Evaluation Board until you have read and agreed to the Agreement. Your use of the Evaluation Board shall signify your acceptance of the Agreement. This Agreement is made by and between you (“Customer”) and Analog Devices, Inc. (“ADI”), with its principal place of business at One Technology Way, Norwood, MA 02062, USA. Subject to the terms and conditions of the Agreement, ADI hereby grants to Customer a free, limited, personal, temporary, non-exclusive, non-sublicensable, non-transferable license to use the Evaluation Board FOR EVALUATION PURPOSES ONLY. Customer understands and agrees that the Evaluation Board is provided for the sole and exclusive purpose referenced above, and agrees not to use the Evaluation Board for any other purpose. Furthermore, the license granted is expressly made subject to the following additional limitations: Customer shall not (i) rent, lease, display, sell, transfer, assign, sublicense, or distribute the Evaluation Board; and (ii) permit any Third Party to access the Evaluation Board. As used herein, the term “Third Party” includes any entity other than ADI, Customer, their employees, affiliates and in-house consultants. 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