TLV320AIC24CPFBG4

Overview

The TLV320AIC24CPFBG4 is a low-power, highly integrated, dual-channel audio CODEC featuring stereo 16-bit oversampling sigma-delta A/D and D/A converters. It supports a maximum conversion rate of 26 kSPS with on-chip IIR/FIR filters or up to 104 kSPS when filters are bypassed. The device operates with analog supply voltages ranging from 2.7 V to 3.6 V and digital core supplies from 1.65 V to 1.95 V. It achieves an SNR of 84 dB for the ADC and 92 dB for the DAC over a 13-kHz bandwidth. The component is housed in a 48-TQFP package and is characterized for commercial operation between 0°C and +70°C.

Feature Summary

• Integrates programmable gain amplifiers, microphone bias, and selectable FIR/IIR filters for voice-band signal processing.
• Supports SMARTDM serial port interface for glueless connection to DSPs and microcontrollers.
• Includes hardware and software power-down modes to minimize system power consumption.
• Features separate software control for independent ADC and DAC operation.

Applications

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

Procurement Notes

Verify the ordering suffix 'PFB' corresponds to the 48-TQFP package and 'G4' indicates lead-free compliance. Confirm the temperature grade matches the specific application requirements, as this part number denotes commercial range (0°C to 70°C). Ensure the host system voltage levels align with the specified analog and digital supply ranges before integration.

Selection Notes

Select this component for applications requiring low-power stereo voice conversion with integrated analog front-end functions. Consider the available sampling rates and filter configurations when designing for specific voice bandwidths. Verify that the required serial interface protocol is compatible with the SMARTDM or standard I2C/S2C host port options provided by the device architecture.

Part Context

This device belongs to the TLV320AIC2x family of audio CODECs, which includes variants like the TLV320AIC20, AIC21, AIC24, and AIC25. The family shares common architectural features such as sigma-delta conversion and programmable filtering. The specific CPFBG4 designation identifies the commercial temperature grade, TQFP packaging, and RoHS-compliant manufacturing process within this product line.

Replacement Considerations

Direct pin-to-pin replacements within the same series include the TLV320AIC20CPFBR, TLV320AIC21CPFBR, and TLV320AIC25CPFBR. These parts share identical pinouts and functional blocks but may differ in specific analog driver capabilities, such as the inclusion of a speaker driver in the AIC20/21 variants. Verify feature parity before substitution.

FAQ

What is the maximum sampling rate supported by the TLV320AIC24?

The device supports a maximum sampling rate of 26 kSPS when using the on-chip IIR/FIR filters. If the filters are bypassed, the maximum conversion rate increases to 104 kSPS.

Does the TLV320AIC24 include a built-in speaker driver?

No, the TLV320AIC24 does not include a built-in speaker driver. This feature is available only in the TLV320AIC20 and TLV320AIC21 variants within the same family.

How is the device controlled via the host interface?

The device uses a two-wire serial interface that can be programmed as either an industrial standard I2C or a simple S2C (start-stop communication) protocol for register configuration and control.