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      電子發(fā)燒友網(wǎng)>電子資料下載>類型>參考設計>A2B類D放大器模塊用戶指南

      A2B類D放大器模塊用戶指南

      2021-03-23 | pdf | 210.48KB | 次下載 | 2積分

      資料介紹

      This version (03 Mar 2020 18:47) was approved by Chad Wentworth.The Previously approved version (13 Feb 2020 18:46) is available.Diff

      Table of Contents

      A2B Class-D Amplifier Module for SHARC Audio Module

      The SHARC Audio Module A2B Class-D Amplifier Module is an A2B connected board that contains two Class-D SSM3582 amplifier ICs, providing 4 channels of audio output.

      The A2B Class-D Amplifier Module

      Block Diagram of the A2B Class-D Amplifier Module

      Schematics, PCB Layout, Bill of Materials

      SHARC Audio Module A2B Class-D Amplifier Module Design and Integration Files

      • Bill of Materials (Coming Soon)
      • Fabrication and Assembly Files (Coming Soon)

      Automotive Audio Bus (A2B) Interface Duraclick (P4, P5)

      The A2B bus uses crossover cables to connect nodes to each other. P4 connects to upstream towards the Master Node in the network and P5 connects downstream to the next slave in the network.

      The A2B Class-D Amplifier Module uses the AD2428W IC.

      SSM3582 Class-D Amplifier

      There are two ADI SSM3582 Class-D amplifiers on the A2B Class-D Amplifier Module. Each is two channels.

      At 16V, the max power per channel is ~24w of power.

      P11 AMP1 Left Channel Output

      1 Positive
      2 Negative

      P12 AMP1 Right Channel Output/MONO

      1 Positive
      2 Negative

      P13 AMP2 Left Channel Output

      1 Positive
      2 Negative

      P14 AMP2 Right Channel Output/MONO

      1 Positive
      2 Negative

      Populate JP6 & JP7 to configure AMP1 into MONO Output on P12. Populate JP8 & JP9 to configure AMP2 into MONO Output on P14.

      USBi Connector for SigmaStudio (P1)

      The USBi Connector on the SHARC Audio Module allows for the use of the USBi adapter for SigmaStudio and bare metal programming.

      +12v Input Power Jack (P3)

      The A2B Class-D Amplifier Module is designed to run off a 12v to 16v supply. A 12v 2A DC power supply is included in the kit. The barrel connector on the A2B Class-D Amplifier Module can handle up to 3A current.

      The Class-D Amplifier Module is shipped with a US power supply. Here is a universal option: https://www.digikey.com/products/en?keywords=102-3580-ND

      Power Supply Input (P10)

      P10 is a power supply input jack to connect up to 16v @ 8A MAX. There is an 8A fuse on the Positive input of the P10 connector.

      Pushbuttons (PB1, PB2)

      Two GPIO pushbuttons are provided on the A2B Class-D Amplifier Module. They are connected as follows:

      • PB1 is connected to IO1 on AD2428W
      • PB2 is connected to IO2 on AD2428W

      GPIO LEDs (LED1, LED2)

      There are two GPIO-controlled LEDs on the A2B Class-D Amplifier Module. They are connected as follows:

      • LED1 is connected to IO0 on the AD2428W
      • LED2 is connected to IO7 on the AD2428W

      PDM/TDM Connectors

      JP5 PDM MIC

      3.3v 12 GND
      DRX0 34 GND
      DRX1 56 GND
      BLCK 78 GND

      P2 Buffered TDM Signals

      B_DTX0 1 2 GND
      B_DTX1 3 4 GND
      B_DRX0 5 6 GND
      B_DRX1 7 8 GND
      B_FSYNC 9 10 GND
      B_BLCK 1112 GND

      P15 Unbuffered TDM Signals

      DTX0 12 GND
      DTX1 34 GND
      DRX0 56 GND
      DRX1 78 GND
      FSYNC 910 GND
      BLCK 1112 GND

      EEPROM

      The A2B Class-D Amplifier Module has a TWI 256k EEPROM for configuration data. The EEPROM used is the 24FC256I/MS.

      Navigation - SHARC Audio Module
      Prev.: Audio Project FinUp: Hardware ReferenceNext.: Faust and the SHARC Audio Module
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