Texas Instruments TLV320A3204IRHBRG4

Overview

TLV320A3204IRHBRG4 from Texas Instruments is a low-power stereo audio codec integrating dual 24-bit sigma-delta ADCs and DACs, programmable PGA with ±47.5 dB gain range in 0.5 dB steps, integrated LDOs, and configurable I²C/SPI control. It supports stereo analog/digital microphone inputs, headphone/line outputs, and operates at 48 ksps with 93 dB ADC SNR and 100 dB DAC SNR - deployed in portable media players and mobile handsets.

For engineers reviewing the TLV320A3204IRHBRG4 datasheet, TLV320A3204IRHBRG4 pinout, TLV320A3204IRHBRG4 application, or TLV320A3204IRHBRG4 equivalent, key selection criteria include its 32-pin VQFN package, dual independent signal processing paths (ADC/DAC), PowerTune™ dynamic power scaling, flexible input routing (six single-ended or three differential analog inputs), and support for both I²C and SPI configuration interfaces.

Technical Context

The TLV320A3204IRHBRG4 implements two independent stereo signal processing chains: left/right ADC paths each with DRC, AGC, and programmable gain amplifiers; and left/right DAC paths with volume control, digital filtering, and output mixing. Each path supports configurable sample rates (8–96 ksps) and data formats (I²S, left-justified, right-justified).

Its clock architecture includes an integrated PLL supporting MCLK frequencies from 0.512 MHz to 50 MHz, programmable via register writes, and dual LDOs (analog and digital) with selectable input sources (AVDD, DVDD, or external LDOIN). Pin multiplexing enables shared use of SCLK, MISO, and GPIO pins across interface modes and peripheral functions.

Key Specifications

Pinout & Package

TLV320A3204IRHBRG4 uses a 5.0 mm × 5.0 mm, 32-pin VQFN (RHB) package with exposed thermal pad connected to PCB ground plane. Pin functions are highly multiplexed, supporting dual I²S interfaces, GPIO, interrupt outputs, and configurable clock routing.

Key Features

Applications

Equivalent & Alternatives

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

Compared with TLV320AIC3254IRHBR and TLV320AIC3206IRHBT, TLV320A3204IRHBRG4 delivers identical core audio performance and power efficiency without miniDSP overhead or ground-centered output constraints - making it optimal for cost-sensitive, host-controlled audio subsystems where external DSP is available.

Availability

TLV320A3204IRHBRG4 is available at Aetrix Electronics and suitable for portable media players, mobile handsets, and portable navigation devices requiring stable component supply, long-term lifecycle support, and traceable sourcing from authorized channels.

Supply support for TLV320A3204IRHBRG4 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 low-power audio signal chains and precision data converters.

The TLV320A3204IRHBRG4 belongs to TI's ultra-low-power audio codec product line, designed specifically for battery-operated portable electronics where SNR, power efficiency, and integration density are critical system-level constraints.

FAQ

What is the function of the SPI_SELECT pin on the TLV320A3204IRHBRG4?

The SPI_SELECT pin configures the TLV320A3204IRHBRG4 control interface mode: logic high selects SPI (with SCLK, MOSI, MISO), while logic low enables I²C (SCL/SDA). This hardware-selectable dual-interface capability allows seamless integration with hosts supporting either protocol without redesigning the control bus. The TLV320A3204IRHBRG4 retains full register access and configuration flexibility in both modes.

Does the TLV320A3204IRHBRG4 support digital microphone (PDM) inputs?

Yes, the TLV320A3204IRHBRG4 supports digital microphone inputs via dedicated PDM clock and data pins (DIN/MFP1 and MISO/MFP4), with built-in decimation filters converting PDM streams to PCM at standard audio sample rates. This eliminates the need for external PDM-to-PCM converters. The TLV320A3204IRHBRG4 handles synchronization, clock recovery, and format conversion entirely on-chip.

What is the maximum output power into 16Ω headphones for the TLV320A3204IRHBRG4?

The TLV320A3204IRHBRG4 delivers up to 64 mW per channel into 16Ω loads when powered from the LDOIN supply at 3.3 V, with THD+N < 1%. At lower supply voltages (e.g., AVDD = 1.8 V), output power drops to 15 mW. This specification is measured under defined conditions in the datasheet (Section 7.8) and reflects real-world drive capability without external amplification.

Can the TLV320A3204IRHBRG4 operate with a 1.5 V analog supply (AVDD)?

Yes, the TLV320A3204IRHBRG4 supports AVDD from 1.5 V to 1.95 V. At 1.5 V, full-scale DAC output is 0.375 V_RMS, ADC SNR remains 91 dB, and PGA gain range adjusts to –12 dB to +35.5 dB depending on input impedance. All specifications in the datasheet include 1.5 V AVDD test conditions, confirming robust operation across the full recommended range.

How does the PowerTune™ feature reduce power consumption in the TLV320A3204IRHBRG4?

PowerTune™ dynamically disables unused functional blocks - such as secondary I²S interface, unused ADC channels, or digital microphone clock generators - based on real-time configuration registers. This reduces active current without requiring host software intervention for each state change. The TLV320A3204IRHBRG4 achieves 4.1 mW DAC playback by powering only essential DAC, output driver, and clock circuits, verified in Section 1 of the datasheet.