Texas Instruments TLV320AIC3253IRGER

Overview

TLV320AIC3253 from Texas Instruments is a low-power stereo audio codec with embedded miniDSP, 100dB SNR DAC, stereo digital microphone interface, and programmable headphone drivers. It supports 8kHz–192kHz sample rates, operates from 1.26V–1.95V DVdd and 1.5V–1.95V AVdd, and delivers up to 47mW into 32Ω differential load - ideal for battery-powered mobile handsets and portable computing audio subsystems.

For engineers reviewing the TLV320AIC3253 datasheet, TLV320AIC3253 pinout, TLV320AIC3253 application, or TLV320AIC3253 equivalent, key selection considerations include PowerTune™ power-performance tuning, I²C/SPI dual-control interface flexibility, integrated LDO for single-supply system simplification, and configurable analog bypass path for ultra-low-power voice playback.

Technical Context

The TLV320AIC3253 implements a fully register-programmable signal path: stereo ADC/DAC with 16–24-bit word length, miniDSP clocked up to 55.3MHz (DVdd = 1.65V), and flexible clock routing where MCLK, BCLK, DIN, or GPIO can serve as PLL input. Its PowerTune architecture enables dynamic trade-offs between power (as low as 4.1mW stereo 48ksps playback) and performance (100dB SNR).

Audio routing includes independent left/right analog bypass paths to headphone drivers, stereo digital mic PDM input (64Fs/128Fs), and dual-mode output drivers configurable for single-ended (16Ω) or differential (32Ω) headphone loads. The integrated LDO accepts 1.9V–3.6V input and generates regulated AVdd, reducing external supply complexity.

Key Specifications

Pinout & Package

TLV320AIC3253IRGER is packaged in a 24-pin QFN (RGE) with 0.4 mm pitch, 4 mm × 4 mm body, and exposed thermal pad. Pin functions are fully reconfigurable via registers except RESET and SPI_SELECT, enabling compact layout and multi-role PCB design.

Key Features

Applications

Equivalent & Alternatives

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

Compared with TLV320AIC3253IRGER, TLV320AIC3101IRGET offers lower system cost but sacrifices programmable audio processing and digital mic capability, while PCM3168APFBR provides greater I/O scalability at the expense of size, power, and integration - making TLV320AIC3253IRGER optimal for space-constrained, battery-powered dual-use audio endpoints.

Availability

TLV320AIC3253IRGER is available at Aetrix Electronics and suitable for mobile handset audio, portable computing audio, and communication device applications requiring stable component supply, long-term lifecycle support, and traceable sourcing.

Supply support for TLV320AIC3253IRGER 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 and embedded processing technologies, with decades of leadership in precision audio signal chains and low-power mixed-signal ICs.

The TLV320AIC3253 belongs to TI's ultra-low-power audio codec product line, engineered specifically for battery-operated portable devices demanding high-fidelity audio, flexible software-defined signal processing, and minimal system-level power overhead.

FAQ

What is the maximum supported sample rate for the TLV320AIC3253?

The TLV320AIC3253 supports sample rates from 8 kHz up to 192 kHz in both ADC and DAC paths. This range accommodates narrowband voice telephony (8–16 kHz), standard CD-quality audio (44.1/48 kHz), and high-resolution music playback (96/192 kHz). The internal PLL and clock dividers ensure accurate clock generation across this full range, with configuration validated in the SLAU303 Application Reference Guide.

Does the TLV320AIC3253 support digital microphones?

Yes, the TLV320AIC3253 supports stereo digital PDM microphones via dedicated DMDIN and DMCLK pins. When SPI_SELECT = 0, DIN/MFP1 and DMDIN/MFP3 function as PDM data and clock inputs respectively. The device accepts 64Fs or 128Fs PDM streams and converts them to PCM internally - eliminating external PDM-to-PCM converters and reducing board area and EMI susceptibility.

Can the TLV320AIC3253 operate without an external LDO?

Yes, the TLV320AIC3253IRGER integrates a low-dropout regulator (LDO) that generates AVdd from a 1.9V–3.6V LDOIN supply. When enabled, this eliminates the need for an external analog rail regulator. If disabled, AVdd must be supplied externally within 1.5V–1.95V. The LDO's ±2% output accuracy and 26 mV load regulation ensure stable analog performance across operating conditions.

What are the power consumption characteristics of the TLV320AIC3253 in analog bypass mode?

In analog bypass mode (INL→HPL, INR→HPR), the TLV320AIC3253 draws just 1.4 mA total supply current - significantly lower than full DAC/ADC operation. This mode disables digital signal paths while retaining headphone driver bias and analog routing, making it ideal for ultra-low-power voice call scenarios. Shutdown current drops further to <1 µA when coarse AVdd is turned off and RESET held low.

How does the PowerTune™ feature affect audio performance in the TLV320AIC3253?

PowerTune™ dynamically adjusts internal clock frequencies, bias currents, and signal path configurations to balance power and performance. For example, PTM_P3 mode delivers 4.1 mW playback power with 88 dB SNR, while PTM_P4 increases SNR to 100 dB at the cost of ~2.5× higher power. Engineers select modes via register writes to match real-time use-case requirements - e.g., low-power voice vs. high-fidelity music - without hardware changes.