TLV320AD543PT

Codecs Overview

The TLV320AD543 is a single-channel data and fax codec manufactured by Texas Instruments. It integrates a 16-bit analog-to-digital converter (ADC) and digital-to-analog converter (DAC) with sigma-delta modulation, supporting sample rates up to 11.025 kHz. The device includes an integrated hybrid circuit, programmable gain amplifiers, and an 8-W AT41 differential speaker driver. It operates on 3-V analog, digital, and monitor power supplies. Key performance metrics include a typical dynamic range of 79 dB, 76 dB THD+N for the ADC, and 78 dB THD+N for the DAC. The component is housed in a 48-pin PT (TQFP) package and functions within a temperature range of 0°C to 70°C.

Codecs Feature Summary

• Integrates a single-channel codec with sigma-delta ADC and DAC for high-resolution audio processing.
• Includes built-in hybrid circuitry with programmable gain and filter pole configuration via external components.
• Features an 8-W differential speaker driver capable of driving AT41 call progress monitor speakers.
• Supports software-controlled power-down modes and flash write enable circuits for external memory programming.

Codecs Applications

• Data and fax modem systems requiring single-channel audio connectivity.
• Voice communication devices utilizing hybrid circuits for line interface.
• Equipment requiring integrated speaker drivers for call progress monitoring.

Codecs Procurement Notes

Verify the specific package variant and temperature grade against the ordering information table. Confirm that the application environment remains within the specified 0°C to 70°C operating range. Ensure power supply rails are strictly maintained at 3 V for analog, digital, and monitor sections. Review the absolute maximum ratings to prevent damage from voltage spikes or thermal overload during installation.

Codecs Selection Notes

Select this component for applications requiring a single-channel codec with integrated hybrid and speaker drive capabilities. Consider the 11.025 kHz maximum sample rate limitation when designing for higher fidelity audio. Evaluate the need for the 8-W speaker driver versus external amplification if higher output power is required. Verify compatibility with the 16-bit serial interface timing requirements for both FS high and low modes.

Codecs Part Context

This device belongs to the legacy mixed-signal product line from Texas Instruments, specifically designed for broadband connectivity in data and fax applications. It represents an integration of analog front-end processing and digital conversion in a single TQFP package. The design philosophy focuses on reducing external component count by integrating hybrid buffers and speaker drivers directly onto the silicon die.

Codecs Replacement Considerations

Publicly confirmed substitute part numbers are not available in the provided documentation. Due to the specialized nature of the integrated hybrid and speaker driver, direct pin-compatible replacements may not exist. Designers should evaluate modern audio codecs with separate hybrid and amplifier stages if newer alternatives are considered.