Texas Instruments TLV320AIC3110IRHBT

Overview

TLV320AIC3110 from Texas Instruments is a low-power, highly integrated audio codec IC featuring stereo 24-bit DAC (95-dB SNR), mono 24-bit ADC (91-dB SNR), integrated stereo Class-D speaker amplifier (1.29 W into 8 Ω), programmable digital audio processing blocks (PRB), and I²C/I²S/PCM/TDM interface support. It serves as the central audio signal path in portable devices requiring simultaneous playback, recording, and direct battery-driven speaker output.

For engineers reviewing the TLV320AIC3110 datasheet, TLV320AIC3110 pinout, TLV320AIC3110 application, or TLV320AIC3110 equivalent, key selection criteria include its dual-domain power architecture (separate AVDD/DVDD/IOVDD/SPLVDD rails), 5-mm × 5-mm 32-VQFN package with thermal pad, register- or pin-controlled volume, and built-in AGC + digital sine-wave generator for UI feedback.

Technical Context

The TLV320AIC3110 integrates analog front-end circuitry-including microphone bias, PGA with 0–59.5 dB gain (0.5-dB steps), and AGC-alongside fully configurable digital audio processing using user-programmable biquad and FIR filters. Its on-chip PLL supports flexible clock generation from MCLK, BCLK, or GPIO1 inputs to drive the PRB and audio data paths at sample rates from 8 kHz to 192 kHz.

Digital audio routing is managed via independent DAC and ADC sample-rate domains, supporting master/slave operation across I²S, left/right-justified, DSP, and TDM modes. The Class-D speaker driver operates in BTL configuration with selectable gain (6–24 dB in 6-dB steps) and direct battery connection capability (SPLVDD/SPRVDD up to 5.5 V), while headphone/line outputs provide 0–9 dB gain (1-dB steps) with de-pop and soft-start control.

Key Specifications

Pinout & Package

The TLV320AIC3110 is housed in a thermally enhanced 32-pin VQFN (RHB) package with an exposed thermal pad (pin 32 is GPIO1; thermal pad is not electrically connected and must be soldered to PCB ground plane).

Key Features

Applications

Equivalent & Alternatives

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

Compared with TLV320AIC3100 and TLV320AIC3120, the TLV320AIC3110 uniquely delivers stereo Class-D speaker drive plus full PRB programmability in the same 32-VQFN footprint - making it the only option among the three for compact, high-fidelity portable audio with on-chip DSP acceleration.

Availability

TLV320AIC3110 is available at Aetrix Electronics and suitable for portable audio devices, mobile internet devices, and e-book readers requiring stable component supply, long-term lifecycle support, and guaranteed traceable sourcing.

Supply support for TLV320AIC3110 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 TLV320AIC3110 belongs to TI's low-power audio codec product line, designed specifically for battery-operated portable electronics needing integrated analog front-end, high-SNR conversion, and efficient Class-D amplification without external components.

FAQ

What is the maximum speaker output power of the TLV320AIC3110?

The TLV320AIC3110 delivers up to 1.29 W into an 8-Ω load in BTL configuration when SPLVDD and SPRVDD are supplied at 5.5 V. This is measured at 10% THD with 18-dB Class-D gain. At lower supply voltages (e.g., 3.6 V), output power scales quadratically - approximately 540 mW at 3.6 V and 790 mW at 4.3 V. The TLV320AIC3110 datasheet specifies these values under defined thermal conditions using JEDEC-standard PCB layout.

Does the TLV320AIC3110 support independent DAC and ADC sample rates?

Yes, the TLV320AIC3110 supports independent sample rates for DAC and ADC paths, ranging from 8 kHz to 192 kHz. This allows asynchronous operation - for example, playing back high-resolution 96-kHz audio while simultaneously recording voice at 16-kHz - without requiring sample-rate conversion in the host processor. The internal PLL and clock distribution tree manage separate audio clocks for each domain.

Can the TLV320AIC3110 operate without an external crystal?

Yes, the TLV320AIC3110 can operate without an external crystal by using its internal RC oscillator (8.2 MHz nominal) for SAR functions or by deriving clocks from BCLK, GPIO1, or MCLK inputs via the integrated PLL. For high-precision audio timing (e.g., <50 ppm jitter), however, an external crystal or low-jitter clock source is recommended to meet SNR and THD+N specifications.

What are the power supply requirements for the TLV320AIC3110 Class-D amplifier?

The TLV320AIC3110 Class-D amplifier requires two dedicated supplies: SPLVDD and SPRVDD, each rated from 2.7 V to 5.5 V, and both must be ≥ AVDD. These rails power the left and right speaker drivers independently. The device specifies that SPLVDD and SPRVDD must not fall below AVDD to prevent latch-up or undefined behavior. Thermal derating applies above 70°C ambient per the RθJA = 32.7°C/W specification.

How does the VOL/MICDET pin function in TLV320AIC3110?

The VOL/MICDET pin on the TLV320AIC3110 serves dual roles: when configured as volume control (page 0, register 116, bit D7 = 1), it accepts an analog voltage from 0 to 0.5×AVDD to select one of 128 attenuation steps; when configured as mic detection (default), it senses headset insertion via resistance measurement. Configuration is controlled entirely by register settings - no external hardware changes are needed to switch modes.