TLV320AIC31

ACTIVE

Low-Power Stereo Codec with 6 Inputs, 6 Outputs, Integrated Headphone/Speaker Amps, 3D Effects

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Product details

Parameters

Number of ADC channels 4 Number of DAC channels (#) 2 Digital audio interface L, R, I2S, DSP Analog inputs 6 Sampling rate (Max) (kHz) 96 Rating Catalog ADC SNR (Typ) (dB) 90 DAC SNR (Typ) (dB) 100 open-in-new Find other Audio CODECs

Package | Pins | Size

VQFN (RHB) 32 25 mm² 5.0 x 5.0 open-in-new Find other Audio CODECs

Features

  • Stereo Audio DAC:
    • 100-dB (A-Weighted) Signal-to-Noise Ratio
    • 16-/20-/24-/32-Bit Data
    • Supports Rates From 8 kHz to 96 kHz
    • 3D/Bass/Treble/EQ/De-Emphasis Effects
  • Stereo Audio ADC:
    • 92-dB (A-Weighted) Signal-to-Noise Ratio
    • Supports Rates From 8 kHz to 96 kHz
  • Six Audio Input Pins:
    • Two Stereo Differential/Single-Ended Inputs
  • Six Audio Output Drivers:
    • Stereo 8-, 500-mW/Channel Speaker Drive Capability
    • Stereo Fully-Differential or Single-Ended Headphone Drivers
    • Fully Differential Stereo Line Outputs
  • Low Power: 14-mW Stereo, 48-kHz Playback With 3.3-V Analog Supply
  • Programmable Input/Output Analog Gains
  • Automatic Gain Control (AGC) for Recording
  • Programmable Microphone Bias Level
  • Programmable PLL for Flexible Clock Generation
  • I2C™ Control Bus
  • Audio Serial Data Bus Supports I2S™, Left-/Right-Justified, DSP, and TDM Modes
  • Extensive Modular Power Control
  • Power Supplies:
    • Analog: 2.7 V to 3.6 V
    • Digital Core: 1.65 V to 1.95 V
    • Digital I/O: 1.1 V to 3.6 V
  • Available Packages: 5-mm × 5-mm, 32-Pin QFN

I2C, I2S are trademarks of NXP Semiconductors.
All other trademarks are the property of their respective owners.

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Description

The TLV320AIC31 is a low-power stereo audio codec with a stereo headphone amplifier, as well as multiple inputs and outputs, programmable in single-ended or fully-differential configurations. Extensive register-based power control is included, enabling stereo 48-kHz digital-to-analog converter (DAC) playback as low as 14 mW from a 3.3-V analog supply, making it ideal for portable, battery-powered audio and telephony applications.

The record path of the TLV320AIC31 contains integrated microphone bias, a digitally-controlled stereo microphone pre-amp, and automatic gain control (AGC), with mix/mux capability among the multiple analog inputs. The playback path includes mix/mux capability from the stereo DAC and selected inputs, through programmable volume controls to the various outputs.

The TLV320AIC31 contains four high-power output drivers as well as two fully differential output drivers. The high-power output drivers are capable of driving a variety of load configurations, including up to four channels of single-ended, 16- speakers in a BTL configuration at 500 mW per channel.

The stereo audio DAC supports sampling rates from 8 kHz to 96 kHz and includes programmable digital filtering in the DAC path for 3D, bass/treble/midrange effects, speaker equalization, and de-emphasis for 32-kHz, 44.1-kHz, and 48-kHz rates. The stereo-audio analog-to-digital converter (ADC) supports sampling rates from 8 kHz to 96 kHz and is preceded by programmable gain amplifiers providing up to +59.5 dB analog gain for low-level microphone inputs.

The serial control bus supports the I2C protocol, while the serial-audio data bus is programmable for I2S, left-/right-justified, DSP, or TDM modes. A highly programmable PLL is included for flexible clock generation and support for all standard audio rates from a wide range of available MCLKs, varying from 512 kHz to 50 MHz, with special attention paid to the most popular cases of 12-MHz, 13-MHz, 16-MHz, 19.2-MHz, and 19.68-MHz system clocks.

The TLV320AIC31 operates from an analog supply of 2.7 V to 3.6 V, a digital core supply of 1.65 V to 1.95 V, and a digital I/O supply of 1.1 V to 3.6 V. The device is available in a 5 × 5 mm, 32-lead QFN package.

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Similar but not functionally equivalent to the compared device:
TLV320AIC3101 ACTIVE Low-Power Stereo Codec with 6 Inputs, 6 Outputs, Speaker/HP Amp and Enhanced Digital Effects Pin-to-pin and software compatible, includes additional fiters in the ADC path.
TLV320AIC3104 ACTIVE Low-Power Stereo CODEC with 6 Inputs, 6 Outputs, HP Amp and Enhanced Digital Effects Pin-to-pin and software compatible, includes additional fiters in the ADC path, without speaker amplifier

Technical documentation

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Type Title Date
* Datasheet Low Power Stereo Audio Codec for Portable Audio/Telephony datasheet (Rev. C) Nov. 12, 2008
Application note Out-of-Band Noise Measurement Issues for Audio Devices (Rev. A) Dec. 31, 2019
Application note Audio Serial Interface Configurations for Audio Codecs (Rev. A) Jun. 27, 2019
Application note Audio Serial Interface Configurations for Audio Codecs Sep. 22, 2010
Application note Interfacing an I2S Device to an MSP430 Device (Rev. A) Mar. 22, 2010
Application note Configuring I2S to Generate BCLK from Codec Devices & WCLK from McBSP Port Jul. 08, 2009
Application note Using TLV320AIC3x Digital Audio Data Serial Interface w/TDM Support Jul. 05, 2006
User guide TLV320AIC31EVM - User Guide Nov. 18, 2005
Application note TLV320AIC3x WinCE 5.0 Drivers Sep. 27, 2005

Design & development

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Design tools & simulation

SIMULATION MODEL Download
SLAM113.ZIP (86 KB) - IBIS Model
SIMULATION TOOL Download
PSpice® for TI design and simulation tool
PSPICE-FOR-TI — PSpice® for TI is a design and simulation environment that helps evaluate functionality of analog circuits. This full-featured, design and simulation suite uses an analog analysis engine from Cadence®. Available at no cost, PSpice for TI includes one of the largest model libraries in the (...)
Features
  • Leverages Cadence PSpice Technology
  • Preinstalled library with a suite of digital models to enable worst-case timing analysis
  • Dynamic updates ensure you have access to most current device models
  • Optimized for simulation speed without loss of accuracy
  • Supports simultaneous analysis of multiple products
  • (...)
CALCULATION TOOL Download
Coefficient Calculator For Digital Biquad Filters
COEFFICIENT-CALC COEFFICIENT-CALC (TIBQ) calculates the coefficients for the digital filter biquad transfer function implemented in TI audio codecs. The characteristics of the digital filter are adjusted by selecting a filter type and moving a control point within a window that shows the transfer function gain and (...)

CAD/CAE symbols

Package Pins Download
VQFN (RHB) 32 View options

Ordering & quality

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