PCM1864-Based Circular Microphone Board (CMB) Reference Design

(ACTIVE) TIDA-01454

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Key Document

Description

The PCM1864 circular microphone board (CMB) is a low-cost easy-to-use reference design for applications that require clear-spoken audio, such as voice triggering and speech recognition. This TI Design uses a microphone array to capture a voice signal, and converts it to a digital stream that can be used by DSP systems to extract clear audio from noisy environments.

Features
  • Uses two PCM1864 4-channel audio ADCs to interface with eight microphone arrays to extract clear speaker voice from noisy environments
  • EnergySense notification for signal presence and loss – central part of a low-power, high-performance audio solution
  • Offers a complete system reference design using microphone array, TI-provided software, and evaluation module

View the Important Notice for TI Designs covering authorized use, intellectual property matters and disclaimers.


  



Schematic/Block Diagram

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Design Guide

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Design Files

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Bill of Materials (BOM)

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Part Number Buy from Texas Instruments or Third Party Buy from Authorized Distributor Status

PCM1864CMBEVM:
PCM1864 Circular Microphone Board (CMB) 103dB 4-Ch Software-Controlled Audio ADC With Universal Front End Evaluation Module

$149.00(USD)


Pricing may vary.



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TI Devices (3)

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Part Number Name Product Family Sample & Buy Design Kits & Evaluation Modules
PCM1864  103dB 4-Channel Software-Controlled Audio ADC With Universal Front End  Audio converters  Sample & Buy View Design Kits & Evaluation Modules
SN74LVC1G125  Single Bus Buffer Gate With 3-State Outputs  Buffer/driver  Sample & Buy View Design Kits & Evaluation Modules
SN74LVC1G126  Single Bus Buffer Gate With 3-State Outputs  Buffer/driver  Sample & Buy View Design Kits & Evaluation Modules

CAD/CAE symbols

Part # Package | Pins CAD File (.bxl) STEP Model (.stp)
SN74LVC1G125 Download Download
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SN74LVC1G126 Download Download
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Technical Documents

View the Important Notice for TI Designs covering authorized use, intellectual property matters and disclaimers.

Datasheet (1)
Title Abstract Type Size (KB) Date Views
PDF 2358 28 Mar 2018
User guides (1)
Title Abstract Type Size (KB) Date Views TI Recommends
PDF 608 10 Apr 2017 48
Design files (6)
Title Abstract Type Size (KB) Date Views
ZIP 6085 11 May 2017 5
ZIP 18998 11 May 2017 15
ZIP 10228 11 May 2017 6
PDF 196 11 May 2017 8
PDF 89 11 May 2017 8
PDF 334 11 May 2017 55

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