TIDM-VOICEBANDAUDIO

Voice Band Audio Playback Using a PWM DAC

Design files

TIDM-VOICEBANDAUDIO

Design files

Overview

Low cost audio output based upon timer generating PWM & external low-pass filter with amplifier stages for either headphone or speaker. Audio data is stored in an on-board SPI Flash. A PC GUI with launchpad passthrough code is provided to load SPI Flash with audio data.

Features

Easily integrate code into existing systems (<2kB Flash needed)
BoosterPack design for easy LaunchPad use
8 bit PWM DAC playback with low-cost filtering
Multiple playback frequencies supported
External SPI Flash storage for sound files
SPI Flash loading software included
Headphone jack or speaker output with volume control

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A fully assembled board has been developed for testing and performance validation only, and is not available for sale.

Design files & products

Design files

Download ready-to-use system files to speed your design process.

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Design guide — TIDM-VOICEBANDAUDIO

TIDU703A.PDF (3942 KB)

Reference design overview and verified performance test data

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Bill of materials (BOM) — TIDM-VOICEBANDAUDIO

TIDRD64.PDF (216 KB)

Complete listing of design components, reference designators, and manufacturers/part numbers

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CAD/CAE symbol — TIDM-VOICEBANDAUDIO

TIDRD61.ZIP (469 KB)

Files used for 3D models or 2D drawings of IC components

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Gerber file — TIDM-VOICEBANDAUDIO

TIDC940.ZIP (297 KB)

Design file that contains information on physical board layer of design PCB

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PCB layout — TIDM-VOICEBANDAUDIO

TIDRD62.ZIP (354 KB)

PCB layer plot file used for generating PCB design layout

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Schematic — TIDM-VOICEBANDAUDIO

TIDRD63.PDF (409 KB)

Detailed schematic diagram for design layout and components

Products

Includes TI products in the design and potential alternatives.

MSP430 microcontrollers

MSP430FG6426 — 20 MHz MCU with 128KB Flash, 10KB SRAM, 16-bit Sigma-Delta ADC, dual DAC, DMA, 2 OpAmp, 160

Data sheet: PDF | HTML

Analog switches & muxes

TS3A24159 — 0.3-Ω on-state resistance, 3.3-V, 2:1 (SPDT), 2-channel analog switch with 1.8-V input logic

Data sheet: PDF | HTML

MSP430 microcontrollers

MSP430FG6625 — 20 MHz MCU with 64KB Flash, 10KB SRAM, 16-bit Sigma-Delta ADC, dual DAC, DMA, 2 OpAmp, 160 s

Data sheet: PDF | HTML

MSP430 microcontrollers

MSP430FG6425 — 20 MHz MCU with 64KB Flash, 10KB SRAM, 16-bit Sigma-Delta ADC, dual DAC, DMA, 2 OpAmp, 160 s

Data sheet: PDF | HTML

General-purpose audio amplifiers

TPA301 — 350-mW, mono, Class-AB audio amplifier

Data sheet: PDF

MSP430 microcontrollers

MSP430F5529 — 25 MHz MCU with 128KB Flash, 8KB SRAM, 12-bit ADC, comparator, DMA, UART/SPI/I2C, USB, HW multiplier

Data sheet: PDF | HTML

MSP430 microcontrollers

MSP430FG6626 — 20 MHz MCU with 128KB Flash, 10KB SRAM, 16-bit Sigma-Delta ADC, dual DAC, DMA, 2 OpAmp, 160 seg L

Data sheet: PDF | HTML

Start development

Software

Support software

TIDC941 — Voice Band Audio Playback Using a PWM DAC Software

Supported products & hardware

Hardware development

Reference design

TIDM-VOICEBANDAUDIO — Voice Band Audio Playback Using a PWM DAC

Download options

TIDC941 — Voice Band Audio Playback Using a PWM DAC Software

Latest version

Version: 01.00.00.0A

Release date: Oct 31, 2016

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Voice Band Audio Playback Using a PWM DAC Software (zip) — 1533 K

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Hardware development

Reference design

TIDM-VOICEBANDAUDIO — Voice Band Audio Playback Using a PWM DAC

Release Information

The design resource accessed as www.ti.com/lit/zip/tidc941 or www.ti.com/lit/xx/tidc941a/tidc941a.zip has been migrated to a new user experience at www.ti.com/tool/download/TIDC941. Please update any bookmarks accordingly.

Technical documentation

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	Type	Title		Date
*	Design guide	Voice Band Audio Playback Using a PWM DAC Design Guide (Rev. A)		Feb 24, 2016
	Technical article	MSP430 MCUs: Testing...testing...1...2...1...2	PDF \| HTML	Apr 28, 2015

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