Texas Instruments TLV320AIC3107IYZFR

Overview

TLV320AIC3107IYZFR from Texas Instruments is a low-power stereo audio codec with integrated mono Class-D speaker amplifier, stereo headphone drivers, and dual single-ended line outputs. It delivers 97-dBA SNR DAC performance, 92-dBA SNR ADC performance, programmable ±59.5 dB PGA gain in 0.5 dB steps, and supports 8–96 kHz sample rates across I²S, left/right-justified, DSP, and TDM audio serial interfaces - deployed in cellular handsets and portable media players.

For engineers reviewing the TLV320AIC3107IYZFR datasheet, TLV320AIC3107IYZFR pinout, TLV320AIC3107IYZFR application, or TLV320AIC3107IYZFR equivalent, key selection considerations include its 40-pin WQFN (5.15 mm × 5.15 mm) package, integrated AGC with 8 ms–1.4 s attack and 50 ms–22.4 s decay, analog passthrough mode for ultra-low power, and independent supply domains (AVDD_ADC/DAC: 2.7–3.6 V; SPVDD: 2.7–5.5 V; DVDD: 1.525–1.95 V).

Technical Context

The TLV320AIC3107IYZFR integrates three signal paths: a stereo ADC path with programmable microphone bias, dual-channel PGA, and AGC; a stereo DAC path with digital filtering (3D/bass/treble/EQ/de-emphasis); and a mono differential Class-D speaker driver capable of 1 W into 8 Ω. All analog inputs support single-ended or fully differential configuration via register-controlled muxing.

Its digital audio interface operates in master or slave mode with BCLK/WCLK/DIN/DOUT pins, while I²C control (SCL/SDA) configures registers for gain, routing, power modes, and clock generation via an internal PLL supporting MCLKs from 512 kHz to 50 MHz - enabling precise synchronization across diverse host systems without external timing components.

Key Specifications

Pinout & Package

TLV320AIC3107IYZFR is packaged in a 40-pin WQFN (5.15 mm × 5.15 mm, 0.4 mm pitch) with exposed thermal pad. This RoHS-compliant QFN package supports efficient heat dissipation in space-constrained portable designs and is compatible with standard reflow soldering processes.

Key Features

Applications

Equivalent & Alternatives

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

Compared with TLV320AIC3107IYZFR, TLV320AIC3106IRSBT removes Class-D integration to reduce cost and complexity, while WM8960GEFL/V offers superior SNR and resolution at the expense of pin compatibility and distinct software integration requirements.

Availability

TLV320AIC3107IYZFR is available at Aetrix Electronics and suitable for cellular handsets, portable media players, and digital cameras requiring stable component supply, long-term lifecycle support, and consistent parametric performance across production batches.

Supply support for TLV320AIC3107IYZFR 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 expertise in precision audio signal chains and low-power mixed-signal ICs.

The TLV320AIC3107IYZFR belongs to TI's low-power audio codec product line, designed specifically for battery-operated portable devices demanding high-fidelity audio, flexible I/O configuration, and aggressive power optimization without sacrificing feature richness.

FAQ

What is the maximum output power of the Class-D amplifier in TLV320AIC3107IYZFR?

The TLV320AIC3107IYZFR delivers 1 W of continuous output power into an 8 Ω load in differential BTL configuration when supplied with SPVDD = 5 V. At lower supply voltages (e.g., 3.6 V), output power scales quadratically - approximately 0.5 W into 8 Ω. The device includes thermal foldback protection to prevent damage during sustained high-power operation.

Does TLV320AIC3107IYZFR support differential microphone inputs?

Yes, TLV320AIC3107IYZFR supports fully differential microphone inputs on multiple channel pairs: MIC3L/MIC3R, LINE2LP/LINE2RP, and LINE1LP/LINE1RP. Each pair can be configured via register settings to operate in differential mode, achieving 92-dBA SNR and improved common-mode noise rejection - critical for noise-sensitive voice capture applications.

Can TLV320AIC3107IYZFR operate with a 1.8-V digital core supply?

Yes, TLV320AIC3107IYZFR supports DVDD = 1.525 V to 1.95 V, making 1.8 V a valid and commonly used nominal value for the digital core supply. This voltage powers the sigma-delta modulators, interpolation filters, and register interface logic - and must remain within specification to ensure correct timing and data integrity across the audio serial interface.

How does the analog passthrough mode function in TLV320AIC3107IYZFR?

In analog passthrough mode, TLV320AIC3107IYZFR disables its digital audio core and routes analog inputs (e.g., LINE1L/R) directly to outputs (LEFT_LOP/RIGHT_LOP) via low-resistance CMOS switches (rDS(on) ≈ 330 Ω). This mode draws only 28 μA total supply current and maintains signal integrity for always-on functions like headset detection or auxiliary audio monitoring without digital latency or power overhead.

What clock sources does the internal PLL in TLV320AIC3107IYZFR accept?

The TLV320AIC3107IYZFR PLL accepts MCLK inputs ranging from 512 kHz to 50 MHz, including common frequencies such as 12 MHz, 13 MHz, 16 MHz, 19.2 MHz, and 19.68 MHz. It synthesizes precise audio word clocks (e.g., 12.288 MHz for 48 kHz sampling) and bit clocks internally - eliminating external clock generators and simplifying system timing architecture.