Texas Instruments TLV320AIC33IGQER

Overview

TLV320AIC33IGQER from Texas Instruments is a low-power stereo audio codec IC with integrated 100-dBA DAC, 92-dBA ADC, stereo 16-Ω headphone drivers (500 mW/channel in BTL), programmable microphone bias, and AGC-designed for battery-powered portable audio/telephony systems including smartphones and PDAs.

For engineers reviewing the TLV320AIC33IGQER datasheet, TLV320AIC33IGQER pinout, TLV320AIC33IGQER application, or TLV320AIC33IGQER equivalent, this page delivers verified specifications, QFN-48 package mapping, I²S/SPI/I²C interface support, 8–96 kHz sampling rates, and real-world use context for headset, speaker, line-in, and telephony signal paths.

Technical Context

The TLV320AIC33IGQER implements delta-sigma modulation architecture for both ADC and DAC paths, supporting 16/20/24/32-bit data formats and sample rates from 8 kHz to 96 kHz. Its digital audio effects engine applies 3D, bass/treble, EQ, and de-emphasis filters in the DAC path, while the ADC path includes programmable PGA gain up to +59.5 dB in 0.5-dB steps.

It features dual power domains: analog supplies (AVDD/DRVDD = 2.7–3.6 V) and digital core/I/O (DVDD = 1.65–1.95 V, IOVDD = 1.1–3.6 V), with modular power control enabling 14-mW stereo 48-kHz playback. The PLL supports flexible clock generation from MCLK inputs ranging 512 kHz to 50 MHz-including common frequencies like 12 MHz, 13 MHz, and 19.2 MHz.

Key Specifications

Pinout & Package

TLV320AIC33IGQER is packaged in a 7 × 7 mm, 48-lead QFN (GQE) with exposed thermal pad connected to DRVSS. Pin functions are validated per TI SLAS480B datasheet (Rev. December 2008).

Key Features

Applications

Equivalent & Alternatives

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

Compared with TLV320AIC33IGQER, the TLV320AIC3101IRGZR trades speaker drive capability and SNR for lower quiescent current, while the TLV320AIC3254IRGZR adds integrated Class-D amplification at the cost of larger footprint and higher complexity-making TLV320AIC33IGQER optimal for balanced performance, flexibility, and QFN-48 compatibility.

Availability

TLV320AIC33IGQER is available at Aetrix Electronics and suitable for smartphone audio subsystems, portable media players, Bluetooth headsets, and industrial handheld recorders requiring stable component supply and long-term lifecycle support.

Supply support for TLV320AIC33IGQER 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.

The TLV320AIC33IGQER belongs to TI's low-power audio codec product line, engineered specifically for space- and power-constrained portable electronics where high-fidelity audio, flexible I/O, and robust power management are critical.

FAQ

What is the minimum analog supply voltage required for TLV320AIC33IGQER operation?

The TLV320AIC33IGQER requires AVDD and DRVDD supplies within 2.7 V to 3.6 V. Operation below 2.7 V is outside specification and may cause functional failure or degraded SNR. The device draws 14 mW at 3.3 V analog supply during stereo 48-kHz playback-designs targeting lowest power should verify performance at 2.7 V using TI's characterization data in SLAS480B.

Does TLV320AIC33IGQER support digital microphone (PDM) inputs?

Yes, TLV320AIC33IGQER supports digital microphone inputs via GPIO2 (PDM clock) and MFP3 (PDM data), as confirmed in the "Terminal Functions" table and Figure 15 of SLAS480B. These pins operate in dedicated PDM mode when configured via register settings-enabling direct interface with common digital MEMS microphones without external decimation filters.

Can TLV320AIC33IGQER drive 32-Ω headphones effectively?

Yes, TLV320AIC33IGQER delivers 15 mW per channel into 32 Ω (AC-coupled) with 94-dBA SNR, as specified in the "Stereo Headphone Driver" section of SLAS480B. While its peak output is optimized for 16 Ω (30 mW) and 8 Ω (500 mW BTL), the 32-Ω capability meets standard headset requirements with low THD (<0.022% at 10 mW) and programmable gain control.

Is hardware reset mandatory for TLV320AIC33IGQER initialization?

Yes, TLV320AIC33IGQER requires an active-low hardware reset pulse of ≥10 ns on the RESET pin after all power supplies reach regulation. Skipping this step risks undefined register states and communication failure over SPI/I²C. The RESET pin is not internally pulled-external pull-up and controlled assertion are mandatory per Section 1.3 of SLAS480B.

What clock frequencies does the integrated PLL support for TLV320AIC33IGQER?

The TLV320AIC33IGQER PLL accepts MCLK inputs from 512 kHz to 50 MHz and generates precise audio clocks for 8–96 kHz sampling rates. It is explicitly validated for 12 MHz, 13 MHz, 16 MHz, 19.2 MHz, and 19.68 MHz inputs-covering USB audio, GSM, and common crystal oscillator sources. Configuration is register-based and documented in the "Audio Clock Generation" block diagram.