TIDM-VOICEBANDAUDIO

Voice Band Audio Playback Using a PWM DAC

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

Design files & products

Design files

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

TIDU703A.PDF (3942 K)

Reference design overview and verified performance test data

TIDRD63.PDF (408 K)

Detailed schematic diagram for design layout and components

TIDRD64.PDF (215 K)

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

TIDRD61.ZIP (468 K)

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

TIDC940.ZIP (297 K)

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

TIDRD62.ZIP (354 K)

PCB layer plot file used for generating PCB design layout

Products

Includes TI products in the design and potential alternatives.

Analog switches & muxes

TS3A241590.3-Ω on-state resistance, 3.3-V, 2:1 (SPDT), 2-channel analog switch with 1.8-V input logic

Data sheet document-pdfAcrobat PDF open-in-new HTML
MSP430 microcontrollers

MSP430F552925 MHz MCU with 128KB Flash, 8KB SRAM, 12-bit ADC, comparator, DMA, UART/SPI/I2C, USB, HW multiplier

Data sheet document-pdfAcrobat PDF open-in-new HTML
MSP430 microcontrollers

MSP430FG642525 MHz MCU with 64KB Flash, 10KB SRAM, 16-bit Sigma-Delta ADC, dual DAC, DMA, 2 OpAmp, 160 seg LCD

Data sheet document-pdfAcrobat PDF
MSP430 microcontrollers

MSP430FG642625 MHz MCU with 128KB Flash, 10KB SRAM, 16-bit Sigma-Delta ADC, dual DAC, DMA, 2 OpAmp, 160 seg LCD

Data sheet document-pdfAcrobat PDF
MSP430 microcontrollers

MSP430FG662525 MHz MCU with 64KB Flash, 10KB SRAM, 16-bit Sigma-Delta ADC, dual DAC, DMA, 2 OpAmp, 160 seg LCD

Data sheet document-pdfAcrobat PDF
MSP430 microcontrollers

MSP430FG662625 MHz MCU with 128KB Flash, 10KB SRAM, 16-bit Sigma-Delta ADC, dual DAC, DMA, 2 OpAmp, 160 seg LCD

Data sheet document-pdfAcrobat PDF
Speaker amps

TPA301350-mW, mono, Class-AB audio amplifier

Data sheet document-pdfAcrobat PDF

Start development

Software

Support software

Voice Band Audio Playback Using a PWM DAC Software (Rev. A) – TIDC941A.ZIP (1533 K)

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 Apr. 28, 2015

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