Product details


Number of ADC channels 4 Number of DAC channels (#) 4 Digital audio interface L, R, I2S, DSP Analog inputs 12 Sampling rate (Max) (kHz) 96 Rating Catalog ADC SNR (Typ) (dB) 92 DAC SNR (Typ) (dB) 100 open-in-new Find other Audio CODECs

Package | Pins | Size

NFBGA (ZAS) 87 36 mm² 6 x 6 open-in-new Find other Audio CODECs


  • Four-Channel Audio DAC
    • 102-dBA Signal-to-Noise Ratio
    • 16-, 20-, 24-, and 32-Bit Data
    • Supports Rates From 8 kHz to 96 kHz
    • 3D, Bass, Treble, EQ, and De-Emphasis Effects
    • Flexible Power Saving Modes and Performance Are Available
  • Four-Channel Audio ADC
    • 92-dBA Signal-to-Noise Ratio
    • Supports Rates From 8 kHz to 96 kHz
    • Digital Signal Processing and Noise Filtering Available During Record
  • Twelve Audio Inputs
    • Programmable in Single-Ended or Fully Differential Configurations
    • 3-State Capability for Floating Input Configurations
  • Fourteen Audio Output Drivers
    • Stereo 8-Ω, 500-mW/Channel Speaker Drive Capability
    • Multiple Fully Differential or Single-Ended Headphone Drivers
    • Multiple Fully Differential or Single-Ended Line Outputs
    • Fully Differential Mono Outputs
  • Low Power: 15-mW Stereo 48-kHz Playback With 3.3-V Analog Supply
  • Ultra-Low-Power Mode With Passive Analog Bypass
  • Programmable Input/Output Analog Gains
  • Automatic Gain Control (AGC) for Record
  • Programmable Microphone Bias Level
  • Dual Programmable PLLs for Flexible Clock Generation
  • I2C Control Bus
  • Dual Audio Serial Data Busses
    • Support I2S, Left- or Right-Justified, DSP, PCM, and TDM Modes
    • Enable Asynchronous Simultaneous Operation of Busses and Data Converters
  • Digital Microphone Input Support
  • Concurrent Digital Microphone and Analog Microphone Support Available
  • 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
  • Package: 6-mm × 6-mm 87-pin NFBGA
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The TLV320AIC34 device is a low-power four-channel audio codec with four-channel 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 four-channel 48-kHz DAC playback as low as 15 mW from a 3.3-V analog supply, making it ideal for portable battery-powered audio and telephony applications.

The record path of the TLV320AIC34 contains integrated microphone bias, digitally controlled four-channel microphone preamplifier, and automatic gain control (AGC), with mix or mux capability among the multiple analog inputs. Programmable filters are available during record which can remove audible noise that can occur during optical zooming in digital cameras. The playback path includes mix or mux capability from the four-channel DAC and selected inputs, through programmable volume controls, to the various outputs.

The TLV320AIC34 contains eight high-power output drivers as well as six line-level output drivers. The high-power output drivers are capable of driving a variety of load configurations, including up to eight channels of single-ended 16-Ω headphones using ac-coupling capacitors, or four channels in a capless output configuration. In addition, for codec A, pairs of drivers can be used to drive mono or stereo 8-Ω speakers directly in a BTL configuration at 500 mW per channel.

The four-channel audio DAC supports sampling rates from 8 kHz to 96 kHz and includes programmable digital filtering in each path for 3D, bass, treble, midrange effects, speaker equalization, and de-emphasis for 32-kHz, 44.1-kHz, and 48-kHz rates. The four-channel audio 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 TLV320AIC34 provides an extremely high range of programmability for both attack (8 to 1,408 ms) and for decay (0.05 to 22.4 seconds). This extended AGC range allows the AGC to be tuned for many types of applications.

For battery saving applications where neither analog nor digital signal processing is required, the device can be put in a special analog signal pass-through mode. This mode significantly reduces power consumption, as most of the device is powered down during this pass through operation.

The serial control bus supports normal-speed and fast I2C protocols, whereas the dual serial audio data busses are programmable for I2S, left- or right-justified, DSP, PCM, or TDM mode. Two highly programmable PLLs are included for flexible clock generation and support for all standard audio rates from a wide range of available MCLK_x frequencies, 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 TLV320AIC34 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 6-mm × 6-mm, 87-ball NFBGA package.

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Technical documentation

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Type Title Date
* Data sheet TLV320AIC34 Four-Channel, Low-Power Audio Codec for Portable Audio and Telephony datasheet (Rev. B) Nov. 29, 2016
User guide Quick-Start Guide for TLV320AIC310xEVM Control Jun. 23, 2021
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 Common Noise Issues in Audio Codecs Jul. 21, 2017
Application note Using the MSP430 Launchpad as a Standalone I2C Host for Audio Products (Rev. A) Oct. 28, 2013
Application note Audio Serial Interface Configurations for Audio Codecs Sep. 22, 2010
Application note Solving Enumeration Errors in USB Audio DAC and CODEC Designs Oct. 30, 2009
Application note Configuring I2S to Generate BCLK from Codec Devices & WCLK from McBSP Port Jul. 08, 2009
More literature TLV320AIC33/3106/34 Stereo Audio Converters Jun. 12, 2007

Design & development

For additional terms or required resources, click any title below to view the detail page where available.

Hardware development

document-generic User guide

The TLV320AIC34 evaluation module (EVM) is in the modular EVM form factor, which allows direct evaluation of device performance and operating characteristics, and eases software development and system prototyping. This EVM is compatible with the 5-6K interface evaluation (...)

  • 4-channel audio ditigal-to-analog converter (DAC)
    • 102-dBA signal-to-noise ratio (SNR)
    • 16-, 20-, 24-, 32-bit data
    • Supports rates from 8 kHz to 96 kHz
    • 3D/bass/treble/EQ/de-emphasis effects
    • Flexible power-saving modes and performance are available
  • 4-channel audio analog-to-digital converter (ADC)
    • 92-dBA SNR
    • (...)

Software development

Linux Driver for TLV320AIC3X
TLV320AIC3XSW-LINUX The Linux driver supports the TLV320AIC3x family of low-power stereo CODECs, and communication through the I2C bus and interfaces with the Linux Dynamic Audio Power Management for Portable Devices (DAPM) class.
Linux main line status

Available in Linux main line: Yes
Available through N/A


Design tools & simulation

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 (...)
  • 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
  • (...)
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 (...)
SLAR163.ZIP (487 KB)

CAD/CAE symbols

Package Pins Download
NFBGA (ZAS) 87 View options

Ordering & quality

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