TLV320AIC25CPFBR

Overview

The TLV320AIC25CPFBR 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 programmable sampling rates up to 26 Ksps with on-chip filters or 104 Ksps when bypassed. It operates with a 2.7-V to 3.6-V analog supply and a 1.65-V to 1.95-V digital core supply. The component utilizes the SMARTDM serial interface for DSP connectivity and includes an I2C/S2C host port for control. It is housed in a 48-pin TQFP package and is characterized for commercial operation from 0°C to 70°C.

Feature Summary

• Integrates dual 16-bit sigma-delta ADCs and DACs with selectable FIR/IIR digital filters and bypass modes.
• Includes built-in analog functions such as microphone preamplifiers, handset/headset amplifiers, and an 8-ohm speaker driver.
• Supports glueless connection to TI DSPs via the SMARTDM synchronous serial port and offers flexible I2C/S2C host port configuration.
• Provides comprehensive power management with hardware and software-controlled power-down modes for individual blocks.

Applications

• Wireless accessories
• Hands-free car kits
• Voice over IP (VOIP) systems
• Speech processing applications

Procurement Notes

Verify the specific ordering suffix CPFBR corresponds to the commercial temperature range and 48-TQFP package variant. Confirm that the analog supply voltage requirements align with the system design, as the device requires separate supplies for analog and digital sections. Ensure the host controller supports either the SMARTDM or I2C/S2C interface protocols defined in the datasheet for proper initialization and data transfer.

Selection Notes

Select this component for voice-band applications requiring low power consumption and high integration. The TLV320AIC25 differs from other family members by its specific pinout and feature set suitable for standard telephony interfaces. Consider the available digital filter options if strict audio bandwidth limitations are required. Verify compatibility with the target DSP's serial port timing requirements before finalizing the design.

Part Context

This device belongs to the TLV320AIC2x family of low-cost, low-power CODECs from Texas Instruments. The family includes variants like the AIC20, AIC21, AIC24, and their 'K' counterparts, which share similar core architectures but may differ in temperature ranges or specific analog driver capabilities. The AIC25 specifically targets commercial grade applications within this integrated codec lineup.

Replacement Considerations

The TLV320AIC25CPFBG4 is a lead-free version of this component. Other family members such as the TLV320AIC20, AIC21, and AIC24 may serve as functional alternatives depending on specific temperature ratings and analog driver requirements, though pinouts and feature sets should be compared carefully.