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19 Jul 2017, 13:37

Reference Design of Digilent Pmod MIC3

This is a reference design of Digilent Pmod MIC3 – RS Part Number: (134-6475) . The Digilent Pmod MIC3 was converted into DesignSpark PCB format. Download link of the project files and the datasheet of Digilent Pmod MIC3 can be found in this article.

The Digilent Pmod MIC3 is a Pmod microphone module. It can output the audio in 12-bit digital format by a Pmod interface. The user can adjust the gain easily by changing the value of the trimmer resistor. 

  • SPA2410LR5H-B Low Noise Zero-Height SiSonicTM Microphone
  • Built-in Analog to Digital Converter
  • Adjustable gain
  • Pmod Interface

Schematic of Digilent Pmod MIC3
 

 
PCB layout of Digilent Pmod MIC3
 
 
3D view of Digilent Pmod MIC3

 

BOM list of the board (key components)

RS Part Number

Manufacturer Part Number

Manufacturer

Description

/

SPA2410LR5H-B

KNOWLES

Noise Zero-Height SiSonicTM Microphone

(504-4724)

ADCS7476AIMFX/NOPB

Texas Instruments

12 bit Serial ADC

(805-1481)

M74VHC1G125DFT2G

ON Semiconductor

Non-Inverting 3-State Buffer

(768-1394)

MCP6L02T-E/MS

Microchip

1MHz Rail-Rail

Downloads

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19 Jul 2017, 13:37

Comments

February 7, 2019 16:13

The Knowles MEMS mic (SPA2410LR5H-B) used in this reference design is going EOL in mid 2019. Contact Seltech for alternate microphone options. www.seltech-international.com

0 Votes