Texas Instruments TLV320AIC32IRHBRG4

Overview

TLV320AIC32IRHBRG4 from Texas Instruments is a low-power stereo audio CODEC with integrated stereo headphone amplifier, six analog input channels, four high-power output drivers, and fully differential line outputs. It delivers 14-mW stereo 48-kHz playback at 3.3-V analog supply, supports 8–96 kHz sampling rates, and features programmable microphone bias, AGC, and digital audio effects (3D/bass/treble/EQ/de-emphasis). It targets portable audio/telephony systems requiring compact, battery-efficient audio processing.

For engineers reviewing the TLV320AIC32IRHBRG4 datasheet, TLV320AIC32IRHBRG4 pinout, TLV320AIC32IRHBRG4 application, or TLV320AIC32IRHBRG4 equivalent, key selection considerations include its 32-pin QFN package, I²C control interface, dual-supply operation (AVDD: 2.7–3.6 V; DVDD: 1.65–1.95 V), 92-dB ADC SNR, 100-dB DAC SNR, and capless 16-Ω headphone drive capability.

Technical Context

The TLV320AIC32IRHBRG4 integrates stereo delta-sigma ADCs and DACs with independent programmable gain amplifiers (PGA up to +59.5 dB in 0.5-dB steps) and digital interpolation/decimation filters. Its audio serial bus supports I²S, left/right-justified, DSP, and TDM modes with configurable BCLK/WCLK timing.

A highly programmable PLL accepts MCLK inputs from 512 kHz to 50 MHz-including common frequencies like 12 MHz, 13 MHz, 16 MHz, 19.2 MHz, and 19.68 MHz-and generates precise audio clocks for all standard sample rates (8–96 kHz). Power management includes modular register-based control enabling 0.1-µA deep power-down current.

Key Specifications

Pinout & Package

TLV320AIC32IRHBRG4 is housed in a 5 × 5 mm, 32-pin QFN package with exposed thermal pad (RHB designation). Pin numbering follows standard QFN layout (1–32 counterclockwise from top-left corner).

Key Features

Applications

Equivalent & Alternatives

The following parts are listed as comparable options for similar stereo audio CODEC applications.

Compared with TLV320AIC32IRHBRG4, TLV320AIC3101IRHBT reduces size and power but sacrifices headphone drive and sample-rate flexibility, while PCM3060PW offers higher fidelity at the cost of integration and efficiency-making TLV320AIC32IRHBRG4 optimal for balanced portable audio systems.

Availability

TLV320AIC32IRHBRG4 is available at Aetrix Electronics and suitable for smartphone voice capture, portable media player playback, VoIP handset audio interfaces, and industrial handheld terminals requiring stable component supply and long-term design-in support.

Supply support for TLV320AIC32IRHBRG4 includes scheduled delivery planning, volume procurement assistance, BOM continuity management, traceable sourcing, and lifecycle availability coordination for OEM customers, industrial embedded developers, connected-device designers, and electronics production programs.

Manufacturer

Texas Instruments is a global semiconductor leader delivering analog, embedded processing, and connectivity solutions for industrial, automotive, and personal electronics markets.

The TLV320AIC32IRHBRG4 belongs to TI's low-power audio CODEC product line, engineered specifically for space- and energy-constrained portable devices needing integrated analog front-end, digital audio processing, and flexible interface options.

FAQ

What is the minimum required hardware reset sequence for TLV320AIC32IRHBRG4?

The TLV320AIC32IRHBRG4 requires an active-low RESETB pulse of at least 10 ns duration after all power supplies (AVDD, DRVDD, DVDD, IOVDD) reach their specified operating ranges. Failure to apply this reset prevents proper register map initialization and may cause I²C communication failure or undefined audio behavior. This requirement is mandatory per the device datasheet and applies regardless of power-up sequencing order.

Does TLV320AIC32IRHBRG4 support capless headphone output configuration?

Yes, TLV320AIC32IRHBRG4 supports capless headphone output driving 16 Ω loads at 30 mW per channel. This is achieved using programmable output common-mode voltage (1.35 V, 1.50 V, 1.65 V, or 1.80 V) and internal DC servo loops that eliminate the need for external AC-coupling capacitors-reducing BOM cost and PCB area in portable designs.

What audio serial interface formats does TLV320AIC32IRHBRG4 support?

TLV320AIC32IRHBRG4 supports I²S, left-justified, right-justified, and TDM audio serial data formats via its configurable BCLK/WCLK/DIN/DOUT interface. Format selection is register-programmable, enabling interoperability with diverse host processors including application CPUs, DSPs, and baseband ICs without external protocol translation.

Can TLV320AIC32IRHBRG4 drive 8-Ω speakers directly?

Yes, TLV320AIC32IRHBRG4 can drive 8-Ω speakers at 500 mW per channel in bridge-tied-load (BTL) configuration by pairing its high-power output drivers (e.g., HPL+ and HPLCOM). This capability eliminates the need for external Class-D amplifiers in compact speakerphone or portable speaker designs, subject to thermal derating above 75°C ambient.

What is the function of the MICBIAS pin on TLV320AIC32IRHBRG4?

The MICBIAS pin on TLV320AIC32IRHBRG4 provides a programmable bias voltage (2.0 V, 2.25 V, 2.5 V, 2.75 V, or AVDD) for electret condenser microphones. It sources up to 4 mA and is digitally controlled via register settings, enabling flexible microphone compatibility without external bias circuitry-critical for multi-mic array implementations in smartphones and voice assistants.