Texas Instruments TLV320AIC33IRGZRG4

Overview

TLV320AIC33IRGZRG4 from Texas Instruments is a low-power stereo audio codec with integrated 100-dBA DAC, 92-dBA ADC, 500-mW/channel BTL speaker drivers, programmable microphone bias, and AGC-designed for battery-powered portable audio/telephony systems including smartphones and PDAs using 7×7 mm 48-QFN packaging.

For engineers reviewing the TLV320AIC33IRGZRG4 datasheet, TLV320AIC33IRGZRG4 pinout, TLV320AIC33IRGZRG4 application, or TLV320AIC33IRGZRG4 equivalent, key selection criteria include its 14-mW 48-kHz stereo playback power, 8–96 kHz sample rate support, I²S/SPI/I²C interface flexibility, and capless 8-Ω speaker drive capability in compact QFN-48.

Technical Context

The TLV320AIC33IRGZRG4 implements delta-sigma stereo DAC and ADC paths with independent programmable gain amplifiers (0 to +59.5 dB in 0.5-dB steps), digital filtering for 3D/bass/treble/EQ/de-emphasis, and a highly configurable PLL supporting standard audio clocks from 512 kHz to 50 MHz-including 12/13/16/19.2/19.68 MHz inputs.

Its analog signal chain supports fully differential or single-ended configurations across ten input pins and seven output drivers-including four high-power outputs (capable of 500 mW per channel into 8 Ω in BTL mode) and three fully differential line outputs-with modular power control enabling 0.1 µA deep power-down state.

Key Specifications

Pinout & Package

TLV320AIC33IRGZRG4 is packaged in a 7×7 mm, 48-lead QFN with exposed thermal pad connected to DRVSS. The package supports fine-pitch PCB assembly and efficient heat dissipation for sustained audio output power.

Key Features

Applications

Equivalent & Alternatives

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

Compared with TLV320AIC33IRGZRG4, TLV320AIC32IRGZR omits speaker drivers and capless headphone capability-reducing integration but limiting system-level simplicity; PCM3060PWR delivers superior DAC fidelity but demands external analog support circuitry, increasing BOM and board area in portable implementations.

Availability

TLV320AIC33IRGZRG4 is available at Aetrix Electronics and suitable for smartphone audio subsystems, portable VoIP handsets, Bluetooth headset reference designs, and industrial portable recorders requiring stable component supply and long-term production continuity.

Supply support for TLV320AIC33IRGZRG4 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 specializing in analog, embedded processing, and connectivity technologies, with decades of expertise in precision audio signal chains and low-power design.

The TLV320AIC33 product line targets portable battery-powered audio/telephony applications-delivering high-fidelity conversion, integrated analog front-end features, and ultra-low power consumption in miniature packages.

FAQ

What is the primary function of the TLV320AIC33IRGZRG4 in an audio system?

The TLV320AIC33IRGZRG4 serves as a complete stereo audio codec, integrating high-performance 100-dBA DAC and 92-dBA ADC paths, programmable microphone preamplifiers with AGC, digital audio effects processing, and four high-power output drivers capable of 500 mW per channel into 8 Ω. It enables full-duplex audio processing in portable devices without requiring external amplifiers or bias circuitry-making TLV320AIC33IRGZRG4 ideal for space- and power-constrained designs like smartphones and VoIP handsets.

Does the TLV320AIC33IRGZRG4 support capless headphone output?

Yes, the TLV320AIC33IRGZRG4 supports capless (capacitorless) headphone output in its high-power driver configuration. When configured for single-ended 16-Ω headphone loads with appropriate common-mode voltage settings (1.35 V, 1.5 V, 1.65 V, or 1.8 V), TLV320AIC33IRGZRG4 eliminates the need for large dc-blocking capacitors-reducing BOM cost, PCB area, and potential distortion from capacitor nonlinearity. This capability is explicitly validated in the datasheet for 16-Ω and 32-Ω loads.

What are the supported audio interface protocols for the TLV320AIC33IRGZRG4?

The TLV320AIC33IRGZRG4 supports multiple audio interface protocols: the control bus is selectable between SPI and I²C via the SELECT pin, while the audio serial data bus is programmable for I²S, left-justified, right-justified, DSP, or TDM modes. This flexibility allows TLV320AIC33IRGZRG4 to interface seamlessly with diverse host processors, baseband ICs, and Bluetooth modules-such as using the alternate PCM/I²S bus for direct connection to Bluetooth audio chips as documented in TI application notes.

How does the programmable PLL in the TLV320AIC33IRGZRG4 simplify system clocking?

The TLV320AIC33IRGZRG4 integrates a highly programmable PLL that accepts input clocks from 512 kHz to 50 MHz and generates precise audio master clocks for sampling rates from 8 kHz to 96 kHz. This eliminates the need for multiple crystals or external clock generators-especially beneficial when using common system clocks like 12 MHz, 13 MHz, 16 MHz, or 19.2 MHz. The PLL's flexibility ensures TLV320AIC33IRGZRG4 achieves low-jitter audio timing without adding clocking complexity or cost to the overall design.

What power supply configurations does the TLV320AIC33IRGZRG4 require?

The TLV320AIC33IRGZRG4 requires three independent supply domains: analog (AVDD/AVSS, 2.7–3.6 V), digital core (DVDD/DVSS, 1.65–1.95 V), and digital I/O (IOVDD/DVSS, 1.1–3.6 V). The analog supply powers the DAC, ADC, and output drivers; the core supply powers internal logic and PLL; and the I/O supply sets logic thresholds for control and audio data buses. Proper decoupling and sequencing-particularly asserting RESETB after all supplies stabilize-is mandatory for reliable TLV320AIC33IRGZRG4 operation.