TLV320AIC20KIPFB

Codecs Overview

The TLV320AIC20KIPFB is a low-power, highly integrated, programmable 16-bit dual-channel CODEC manufactured by Texas Instruments. It features two 16-bit oversampling sigma-delta analog-to-digital converters (ADCs) and two 16-bit digital-to-analog converters (DACs). The device supports a maximum sampling rate of 26 Ksps with on-chip filters or 104 Ksps when bypassed. Key electrical parameters include an ADC signal-to-noise ratio (SNR) of 84 dB and a DAC SNR of 92 dB over a 13-kHz bandwidth. It operates with analog supply voltages between 2.7 V and 3.6 V, digital core voltage from 1.65 V to 1.95 V, and digital I/O from 1.1 V to 3.6 V. The component is housed in a 48-TQFP package and is characterized for industrial operation from -40°C to 85°C.

Codecs Feature Summary

• Integrates stereo 16-bit oversampling sigma-delta A/D and D/A converters with built-in analog functions including microphone, handset, and headset amplifiers.
• Features selectable FIR/IIR filters with bypassing capability and programmable input/output gain amplifiers for flexible signal conditioning.
• Supports glueless interface to DSPs via SMARTDM serial port and includes a two-wire host port compatible with I2C or S2C protocols.
• Provides comprehensive power management with hardware/software power-down modes and independent control for ADC, DAC, and operational amplifiers.

Codecs Applications

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

Codecs Procurement Notes

Verify the specific suffix 'K' indicates the industrial temperature grade (-40°C to 85°C) as distinct from commercial variants. Confirm the 'PFB' suffix corresponds to the 48-TQFP package. Ensure compatibility with required supply voltages before integration. Cross-reference the datasheet revision SLAS363D for accurate timing requirements.

Codecs Selection Notes

Select this model for applications requiring industrial temperature stability and high-integration voice band processing. The 'K' variant is necessary for environments below 0°C. Consider the available output drivers (speaker, handset, headset) when designing the analog front end. Verify that the host processor supports the SMARTDM or I2C/S2C interfaces for configuration and data transfer.

Codecs Part Context

This component belongs to the TLV320AIC2x family of low-power audio CODECs. The TLV320AIC20K specifically denotes the industrial temperature range version of the TLV320AIC20. It shares architectural similarities with the TLV320AIC21, TLV320AIC24, and TLV320AIC25, differing primarily in integrated output drivers and feature sets.

Codecs Replacement Considerations

TLV320AIC20IPFB is the commercial temperature grade equivalent. TLV320AIC21IPFB offers similar functionality but may have different driver configurations. Verify pinout and register compatibility before substitution.

Codecs FAQ

What is the difference between the TLV320AIC20K and TLV320AIC20?

The 'K' suffix indicates the industrial temperature grade (-40°C to 85°C), whereas the standard TLV320AIC20 is characterized for commercial operation (0°C to 70°C).

Can the TLV320AIC20K support both I2C and S2C interfaces?

Yes, the host port interface can be programmed to operate as either an industrial standard I2C or a simple S2C (start-stop communication protocol).

What is the maximum sampling rate achievable with filters enabled?

With the on-chip IIR/FIR filters enabled, the maximum sampling rate is 26 Ksps. Bypassing the filters allows for a maximum rate of 104 Ksps.