Texas Instruments TLV320AIC3204IRHBR

Overview

TLV320AIC3204 from Texas Instruments is a low-power, stereo audio codec IC with integrated stereo ADC (93 dB SNR), stereo DAC (100 dB SNR), programmable microphone bias, dual LDOs, and flexible digital interfaces (I²C/SPI + primary/secondary I²S). It supports six analog inputs (single-ended or differential), stereo headphone/line outputs, and digital microphone inputs - deployed in portable media players, navigation devices, and mobile handsets.

For engineers reviewing the TLV320AIC3204 datasheet, TLV320AIC3204 pinout, TLV320AIC3204 application, or TLV320AIC3204 equivalent, key selection considerations include its 5-mm × 5-mm VQFN-32 package, 4.1 mW DAC playback / 6.1 mW ADC record power at 48 ksps, PowerTune™ dynamic power scaling, and configurable signal processing blocks for AGC, DRC, and volume control.

Technical Context

The TLV320AIC3204 implements independent left/right ADC and DAC signal paths with dedicated programmable gain amplifiers (PGA), digital signal processors for AGC and DRC, and configurable input routing to support up to three stereo analog input pairs or digital PDM microphones. Its clock architecture includes an integrated PLL with fractional/integer divide capability and dual LDOs (A-LDO and D-LDO) supporting AVDD (1.5–1.95 V), DVDD (1.26–1.95 V), and IOVDD (1.1–3.6 V) rails.

Digital interface flexibility is achieved via pin-muxed I²C/SPI control and dual I²S ports (primary and secondary), enabling simultaneous connection to baseband processors and auxiliary audio sources. The device supports both master and slave timing modes across all interfaces, with programmable word clock polarity, data alignment, and bit clock edge sensitivity.

Key Specifications

Pinout & Package

TLV320AIC3204 uses a 32-pin VQFN package with exposed thermal pad. Pin functions are highly configurable via SPI/I²C register settings and mode-select pins (e.g., SPI_SELECT, LDO_SELECT), enabling shared pins for control, data, clock, and GPIO roles.

Key Features

Applications

Equivalent & Alternatives

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

Compared with TLV320AIC3254 and TLV320AIC3206, the TLV320AIC3204 delivers optimal cost-performance balance for fixed-function portable audio where miniDSP or ground-centered outputs are unnecessary - retaining full compatibility with existing TI AIC32xx software drivers and evaluation hardware.

Availability

TLV320AIC3204 is available at Aetrix Electronics and suitable for portable media players, mobile handsets, and navigation devices requiring stable component supply, long-term lifecycle support, and traceable sourcing from authorized channels.

Supply support for TLV320AIC3204 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 company specializing in analog and embedded processing technologies, with leadership in precision analog, power management, and signal chain solutions.

The TLV320AIC3204 belongs to TI's ultra-low-power audio codec product line, designed specifically for battery-powered portable electronics demanding high audio fidelity, flexible I/O, and minimal power consumption.

FAQ

What is the maximum sampling rate supported by the TLV320AIC3204?

The TLV320AIC3204 supports audio sampling rates up to 96 ksps for both ADC and DAC paths. This is achieved using oversampling ratios (AOSR/DOSR) of 64 or 128 with corresponding MCLK frequencies - for example, 48 ksps operation requires MCLK = 256 × fs = 12.288 MHz, while 96 ksps requires MCLK = 24.576 MHz. The PLL supports input frequencies from 0.512 MHz to 20 MHz, enabling robust clock generation across this range.

Does the TLV320AIC3204 support digital microphone (PDM) inputs?

Yes, the TLV320AIC3204 supports digital microphone inputs via the DIN/MFP1 pin for PDM data and MISO/MFP4 for PDM clock output. It can decode up to two PDM streams simultaneously and convert them to PCM for processing or transmission over I²S. This eliminates external PDM-to-PCM converters and reduces system EMI compared to analog microphone paths.

How does the PowerTune™ feature reduce power consumption in the TLV320AIC3204?

PowerTune™ dynamically disables unused functional blocks in the TLV320AIC3204 - such as turning off the ADC path during DAC-only playback or disabling unused input channels - reducing active current draw without requiring host intervention. In low-power bypass mode, the TLV320AIC3204 consumes less than 100 µA while maintaining analog signal routing, making it ideal for always-on voice wake-up systems.

What are the voltage requirements for the LDOIN and AVDD supplies on the TLV320AIC3204?

LDOIN must be supplied with 1.9 V to 3.6 V and powers the headphone amplifier and A-LDO; AVDD operates from 1.5 V to 1.95 V and supplies the analog core including ADC/DAC converters and PGAs. When A-LDO is enabled, AVDD is regulated from LDOIN; when disabled, AVDD must be externally supplied. This dual-supply architecture allows optimization of noise performance and power efficiency.

Can the TLV320AIC3204 operate with both I²C and SPI interfaces simultaneously?

No - the TLV320AIC3204 uses a single shared control interface determined by the SPI_SELECT pin state: logic high selects SPI mode (using SCLK/SDA/MISO), logic low selects I²C mode (using SCL/SDA). Both protocols provide full register access and configuration capability, but only one can be active at a time. Pin multiplexing ensures no conflict with audio data lines (DIN/DOUT/BCLK/WCLK).