TLC320AD545IPT

Codecs Overview

The TLC320AD545IPT is a single-channel data and fax codec manufactured by Texas Instruments, housed in a 48-pin PT (TQFP) package. It integrates a 16-bit analog-to-digital converter (ADC), a digital-to-analog converter (DAC), an analog hybrid circuit, and an 8-W AT41 speaker driver. The device supports sample rates up to 11.025 kHz with sigma-delta modulation for high-resolution signal processing. It operates on 5-V or 3.3-V supplies for analog, digital, and monitor rails. Key electrical specifications include a typical dynamic range of 80 dB, total signal-to-noise plus distortion of 80 dB for the ADC, and 78 dB for the DAC.

Codecs Feature Summary

• Integrates a single-channel codec with programmable gain amplifiers and an 8-W differential speaker driver for call progress monitoring.
• Features an integrated analog hybrid circuit with external resistor and capacitor settings for gain and filter pole adjustments.
• Includes a flash write enable circuit that provides current to power the write enable circuit of external memory devices.

Codecs Applications

• Data and fax modem connectivity systems
• Voice over IP (VoIP) gateways
• Telephony equipment requiring integrated hybrid and speaker drive capabilities

Codecs Procurement Notes

Verify the specific suffix 'IPT' corresponds to the industrial temperature range (-40°C to 85°C) as defined in the ordering information. Confirm the package type is the 48-pin Plastic Quad Flatpack (PT). Ensure the design accommodates the required 5-V or 3.3-V supply options for analog, digital, and monitor domains.

Codecs Selection Notes

Select this component when a single-chip solution for data/fax applications is required, combining codec functions with hybrid and speaker drive capabilities. Consider the 11.025 kHz maximum sample rate and 16-bit resolution limits. Verify compatibility with the host processor's serial interface timing requirements for FS high or low modes.

Codecs Part Context

The TLC320AD545 belongs to the Texas Instruments mixed-signal broadband connectivity family. It is designed specifically for data and fax applications, distinguishing itself from general audio codecs by integrating transformer reference voltages and hybrid amplifier stages necessary for telephone line interfacing.

Codecs Replacement Considerations

The datasheet lists the TLC320AD545PT for commercial temperature range. No other direct replacement part numbers are documented in the provided source material.