1FEATURES

· Stereo Audio DAC

. 100 dB A 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 Signal-to-Noise Ratio

. Supports Rates From 8 kHz to 96 kHz

· Six Audio Input Pins

. Six Stereo Single-Ended Inputs

· Six Audio Output Drivers

. Stereo 8-Ω, 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 Record

· 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 – 3.6 V

– Digital Core: 1.65 V – 1.95 V

– Digital I/O: 1.1 V – 3.6 V

· Available Packages: 5 × 5 mm, 32-Pin QFN

DESCRIPTION

The TLV320AIC32 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 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 TLV320AIC32 contains integrated microphone bias, 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 TLV320AIC32 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-Ω headphones using ac-coupling capacitors, or stereo 16-Ω headphones in a cap-less output

configuration. In addition, pairs of drivers can be used to drive 8-Ω 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 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 TLV320AIC32 operates from an analog supply of 2.7 V . 3.6 V, a digital core supply of 1.65 V . 1.95 V, and

a digital I/O supply of 1.1 V . 3.6 V. The device is available in a 5 × 5 mm, 32-lead QFN package.