TLV320AIC25CPFBRG4

Overview

The TLV320AIC25CPFBRG4 is a low-power, highly integrated stereo voice band CODEC in a 48-pin TQFP package. It features two 16-bit oversampling sigma-delta ADCs and two DACs with programmable sampling rates up to 26 ksps (with filters) or 104 ksps (bypassed). The device supports differential and single-ended analog inputs/outputs, including microphone, handset, headset, line, and speaker interfaces. It operates on a 2.7-V to 3.6-V analog supply and a 1.65-V to 1.95-V digital core supply. Key performance metrics include an 84-dB SNR for the ADC and 92-dB SNR for the DAC over a 13-kHz bandwidth.

Feature Summary

• Integrates stereo 16-bit oversampling sigma-delta A/D and D/A converters with selectable FIR/IIR digital filters.
• Includes built-in analog functions such as programmable gain amplifiers, microphone bias, and sidetone control.
• Supports glueless interface to DSPs via SMARTDM serial port and flexible host port using I2C or S2C protocols.
• Features comprehensive power management with hardware/software controlled power-down modes for individual blocks.

Applications

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

Procurement Notes

Verify the component authenticity by checking the marking code against the official Texas Instruments datasheet SLAS363D. Ensure the ordering suffix matches the specified package type and temperature range. Confirm RoHS compliance status through the manufacturer's current product data sheet before finalizing procurement orders.

Selection Notes

Select this model for applications requiring low-power stereo voice conversion with integrated analog drivers. Verify that the required sampling rate fits within the 26 ksps limit when using digital filters, or 104 ksps if bypassing them. Ensure the system design accommodates the separate analog and digital supply voltage requirements specified in the electrical characteristics.

Part Context

This component belongs to the TLV320AIC2x family of low-cost, high-performance dual-voice codecs. It shares functional similarities with the TLV320AIC20, AIC21, and AIC24 models but is distinguished by its specific package configuration and commercial temperature rating. The 'G4' suffix indicates lead-free and RoHS compliant manufacturing.

Replacement Considerations

Direct replacements within the same family include the TLV320AIC20, TLV320AIC21, and TLV320AIC24. When substituting, verify pin compatibility and ensure the alternative part number supports the required operating temperature range and package style.

FAQ

What is the maximum sampling rate supported by the TLV320AIC25?

The maximum sampling rate is 26 ksps when the internal FIR/IIR filters are enabled. If the filters are bypassed, the device supports a maximum sampling rate of 104 ksps.

Does the TLV320AIC25 support a speaker driver?

No, the built-in 8-ohm speaker driver is only available in the TLV320AIC20, TLV320AIC21, and TLV320AIC20K variants. The TLV320AIC25 lacks this specific output stage.

What serial interfaces are supported for control and data?

The device supports a SMARTDM serial port for data transfer, which is compatible with TI DSPs. Control is handled via a host port that can be programmed as either an I2C or S2C interface.