TLV320AIC21IPFBR

Codecs Overview

The TLV320AIC21IPFBR is a low-power, highly integrated stereo voice band CODEC featuring two 16-bit oversampling sigma-delta analog-to-digital converters and two digital-to-analog converters. It supports a maximum sampling rate of 26 ksps with internal filters or 104 ksps when bypassed. The device operates on separate power supplies: 2.7 V to 3.6 V for analog sections (AVDD) and 1.65 V to 1.95 V for the digital core (DVDD), with I/O levels ranging from 1.1 V to 3.6 V. It achieves an ADC signal-to-noise ratio of 84 dB and a DAC SNR of 92 dB over a 13-kHz bandwidth. The component is housed in a 48-pin TQFP package.

Codecs Feature Summary

• Integrates programmable gain amplifiers, microphone bias, handset/headset amplifiers, and an 8-ohm speaker driver within a single chip.
• Supports glueless interface to DSPs via SMARTDM serial port and flexible host control through I2C or S2C interfaces.
• Includes selectable FIR/IIR digital filters and analog sidetone capabilities for voice processing optimization.
• Features comprehensive hardware and software power management modes to minimize current consumption.

Codecs Applications

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

Codecs Procurement Notes

Verify the specific suffix 'R' indicates reel packaging configuration. Confirm the industrial temperature grade (-40°C to 85°C) matches system requirements. Ensure voltage domains align with DVDD and AVDD specifications before integration.

Codecs Selection Notes

Select this model for applications requiring stereo voice-band conversion with integrated audio drivers. Compare against AIC20 or AIC24 variants if different output configurations or temperature ranges are needed. Verify compatibility with the target processor's serial clocking requirements.

Codecs Part Context

This component belongs to the TLV320AIC2x family, which includes the AIC20, AIC24, and AIC25 models. These devices share common architectural features but differ in specific analog outputs and temperature grades. The IPFB suffix denotes the 48-TQFP package type.

Codecs Replacement Considerations

TLV320AIC20IPFBR and TLV320AIC24IPFBR are pin-compatible alternatives within the same datasheet. Verify functional differences regarding speaker driver availability and operating temperature ranges before substitution.

Codecs FAQ

What is the maximum master clock frequency supported?

The device supports a maximum master clock (MCLK) of 100 MHz.

Can the sampling rates for ADC and DAC be different?

Yes, the device allows separate software control for the ADC and DAC, enabling different sampling rates for each channel.

How many devices can be cascaded on a single serial port?

Up to eight TLV320AIC2x codecs can be connected to a single serial port using the automatic cascade detection feature.