Texas Instruments TLV320AIC23BRHD

TLV320AIC23BRHD Product Summary

The TLV320AIC23BRHD from Texas Instruments is a high-performance stereo audio codec that brings together sophisticated analog and digital audio functionalities in a single compact package. Designed to address the needs of portable solid-state audio devices, such as MP3 players and digital voice recorders, the TLV320AIC23BRHD delivers high-fidelity audio with excellent integration and power management. It supports a broad range of audio sampling rates and offers advanced interfacing and control options, making it a versatile solution for engineers working to optimize audio quality and reduce PCB space in portable and battery-powered systems.

Main Functions of TLV320AIC23BRHD

At the heart of the TLV320AIC23BRHD’s performance are its highly optimized analog-to-digital converters (ADCs) and digital-to-analog converters (DACs), both utilizing multibit sigma-delta modulation technology with integrated oversampling digital interpolation filters. Key performance metrics include a 90 dBA signal-to-noise ratio (SNR) for the ADC (A-weighted at 48 kHz) and a remarkable 100 dBA SNR for the DAC, ensuring both high-fidelity recording and playback. Word lengths of 16, 20, 24, and 32 bits are supported across a wide sampling frequency range (8 to 96 kHz), accommodating everything from telephony-grade to CD-quality and above.

Other notable features include:

Flexible core and buffer supply voltage operation (1.42 V – 3.6 V for digital, 2.7 V – 3.6 V for buffer/analog)

Integrated electret microphone bias and buffer amplifiers (with programmable gain stages)

Stereo line-level inputs and outputs, with programmable gain and mute capabilities

Integrated analog bypass and sidetone routing paths

Stereo headphone amplifier capable of delivering 30 mW per channel into 32Ω headphones

Advanced volume and mute controls for all key analog paths

Software control via both SPI and I2C-compatible two-wire serial interfaces

Low playback-only power consumption (<23 mW) and deep standby/power-down modes

Compact package options for PCB area constraint environments

TLV320AIC23BRHD Packaging Types and Physical Specifications

Targeted at demanding portable applications, the TLV320AIC23BRHD is available in several compact package options that optimize PCB utilization and thermal management. The primary offering is the 28-pin VQFN package, which requires just 25 mm² of board area, adopting Texas Instruments’ proprietary MicroStar Junior™ technology. This packaging approach also improves reliability under thermal stress and facilitates robust board integration. Additionally, a 28-pin TSSOP package option is available for designs that prefer a traditional leaded format, with both options meeting JEDEC standards for mechanical outline and soldering compatibility.

TLV320AIC23BRHD Electrical Specs and Suggested Operating Parameters

The TLV320AIC23BRHD provides reliable operation within the following recommended parameters:

Analog, buffer, and headphone supply voltages: 2.7 V to 3.6 V

Core digital supply voltage: 1.42 V to 3.6 V

Digital and analog input voltage tolerance: -0.3 V to respective supply +0.3 V

Operating temperature range: -40°C to +85°C (industrial), -10°C to +70°C (commercial)

Absolute maximum storage temperature: -65°C to +150°C

Key electrical metrics (at AVDD, HPVDD, BVDD = 3.3 V, DVDD = 1.5 V, fs = 48 kHz) include:

90 dBA SNR (ADC), 100 dBA SNR (DAC)

0 VRMS full-scale line input/output level at 3.3 V supply

Programmable gain controls and low noise on both microphone and line inputs

Headphone playback power consumption below 23 mW, with deep standby modes <150 μW

Output drive suitable for typical headphone and line loads

Control Schemes and Audio Interfaces in TLV320AIC23BRHD

The TLV320AIC23BRHD supports both SPI (three-wire) and I2C-compatible (two-wire) control protocols, selected via an external MODE pin. This versatility enables direct interfacing with a broad variety of microcontroller and DSP architectures, minimizing external glue logic and streamlining software integration. Control registers allow precise adjustment of all programmable audio parameters, including volume, gain, power-down sequencing, interface format, and sample rates.

The digital audio interface is equally flexible, providing:

Industry-standard I²S, left justified, right justified, and DSP digital audio data formats

Master/slave operation with programmable bit clock and word clock roles

Word lengths selectable between 16, 20, 24, and 32 bits (excluding right-justified 32 bit)

Direct compatibility with TI DSP McBSP interfaces for both data and clock

Analog Pathway and System Integration of TLV320AIC23BRHD

Analog connectivity in the TLV320AIC23BRHD is engineered for maximum application flexibility, from direct line input/output to integrated microphone and headphone support:

Independently programmable and mute-able left/right line inputs with adjustable gain (-34.5 dB to +12 dB in 1.5 dB steps)

Microphone input with low noise bias, programmable gain (hardware and software stages: 1–5x, or +0/+20 dB), and click suppression circuitry

Line outputs and headphone outputs optimized for low THD+N and minimal audible artifacts during mode switching

Analog bypass path for direct analog routing, easily enabling features like FM tuner or signal monitoring without engaging ADC/DAC stages

Sidetone insertion for headset and telephony use, with programmable attenuation settings (-15 dB to 0 dB)

Digital Audio Connection and Supported Formats in TLV320AIC23BRHD

The TLV320AIC23BRHD accommodates a wide spectrum of digital audio interface standards demanded by modern embedded and consumer audio equipment designs. Supported data transfer formats include right-justified, left-justified, industry-standard I²S, and TI DSP-compatible modes. The interface supports variable word lengths and handles both synchronous master and slave clocking schemes. Programmability is further enhanced by robust register-driven control of digital audio operating modes and active audio signal paths.

TLV320AIC23BRHD Audio Sampling Rate Options

Supporting true universal sampling rates, the TLV320AIC23BRHD is well-suited both to consumer and professional applications:

Sampling frequency support ranges from 8 kHz to 96 kHz, covering traditional telephony up to high-definition audio

Standard industry oversampling rates (256 fs, 384 fs), as well as unique rates of 250 fs and 272 fs, allowing optimal interfacing with TI DSPs and USB audio implementations

Direct 12 MHz master clocking facilitates seamless USB audio designs, with unique USB-mode sampling rates (e.g., 44.117 kHz and 48 kHz) and standard CD audio

Dual clock divider paths, register-configurable, for fine tuning both codec and peripheral clock domains

Power Supply Management and Energy-Efficient Modes in TLV320AIC23BRHD

The TLV320AIC23BRHD is engineered for extended operation in battery-powered devices. Multiple, independently controllable power domains let the designer selectively shut down unused functions to save power. Playback-only operation requires less than 23 mW, while deep standby mode draws below 150 μW and shutdown drops consumption even further (<15 μW). Device registers provide software control over all power states, letting system firmware trade-off features and battery life as required.

Use Cases Ideal for TLV320AIC23BRHD

The TLV320AIC23BRHD excels in a wide range of portable and space-constrained designs, including but not limited to:

Portable MP3 players, voice recorders, and solid-state audio playback systems

USB audio peripherals requiring integrated codec and flexible clocking

Digital camcorders and portable media devices needing stereo audio input/output with integrated microphone bias

Telephony and headset applications leveraging sidetone and low-power analog bypass

DSP-based embedded systems wanting direct McBSP compatibility and minimal external analog support components

Alternative or Substitute Models for TLV320AIC23BRHD

When selecting a stereo audio codec for new or existing designs, engineers may wish to cross-compare TLV320AIC23BRHD with other devices in the Texas Instruments TLV320AIC23B family or with codecs that match the following parameters:

Multibit sigma-delta ADC/DAC structure

8 to 96 kHz sampling rate support

Integrated headphone amplifier (30 mW into 32Ω)

On-chip microphone bias current source and amplifier

SPI and I2C-compatible control

Compact QFN or TSSOP package

Other Texas Instruments codecs in the TLV320AIC2x or TLV320AIC3x series offer comparable features with updated process nodes and advanced power management functions, depending on application needs. Selection should consider digital interface protocol, supply voltage range, analog path flexibility, and package footprint constraints. Check for available pin-compatible devices before making any transition in existing designs.

Conclusion

The TLV320AIC23BRHD from Texas Instruments offers engineers a well-integrated, low-power stereo audio codec with exceptional audio fidelity and system versatility. Its balanced attention to analog and digital integration, robust interface support, programmable flexibility, and low standby power consumption make it an ideal solution for smart, feature-rich portable and embedded audio products. With its proven performance in system-critical applications and broad compatibility with modern DSPs and microcontrollers, TLV320AIC23BRHD is a compelling choice for product selection engineers and sourcing professionals seeking high performance and reliable supply continuity.