TLV320AIC21IPFB

Codecs Overview

The TLV320AIC21IPFB is a low-power, highly-integrated stereo voice band CODEC manufactured by Texas Instruments. It features two 16-bit oversampling sigma-delta analog-to-digital converters and two digital-to-analog converters. The device supports a maximum sampling rate of 26 ksps with on-chip filters or 104 ksps when bypassed. It operates with an analog supply voltage range of 2.7 V to 3.6 V, a digital core voltage of 1.65 V to 1.95 V, and digital I/O from 1.1 V to 3.6 V. The component achieves typical signal-to-noise ratios of 84 dB for the ADC and 92 dB for the DAC over a 13-kHz bandwidth. It is housed in a 48-pin TQFP package.

Codecs Feature Summary

• Integrates programmable gain amplifiers, microphone amplifiers, and speaker drivers for direct connection to audio peripherals.
• Supports SMARTDM serial interface for glueless connection to DSPs and microcontrollers.
• Includes selectable FIR/IIR digital filters and analog sidetone control.
• Provides comprehensive power management with independent software control for various internal sections.

Codecs Applications

• Wireless accessories
• Hands-free car kits
• VOIP systems
• Speech processing

Codecs Procurement Notes

Verify the specific ordering suffix against the manufacturer's current documentation to confirm temperature grade and package variant. Ensure compatibility with system voltage levels, particularly the separate analog, digital core, and I/O supply requirements. Confirm that the 48-TQFP footprint matches the design layout before finalizing procurement.

Codecs Selection Notes

Select this component for applications requiring integrated voice-band processing with minimal external components. Consider the available output drivers, such as the 8-ohm speaker driver, if direct drive capability is needed. Evaluate the power consumption specifications against battery-operated constraints, noting the distinct supply domains for analog and digital sections.

Codecs Part Context

This part belongs to the TLV320AIC2x family, which includes variants like the AIC20, AIC24, and AIC25. These devices share similar core architectures but differ in specific analog interfaces and driver capabilities. The IPFB suffix indicates a commercial temperature range version in a 48-TQFP package.

Codecs Replacement Considerations

The TLV320AIC21IPFBG4 is a verified lead-free replacement within the same family. Other family members such as the TLV320AIC20 or TLV320AIC24 may serve as alternatives if pinout and feature compatibility are verified through official datasheets.