TLC320AD77CDBR

Codecs Overview

The TLC320AD77CDBR is a stereo audio codec manufactured by Texas Instruments, housed in a 28-pin DB (SSOP) package. It operates on a single 3.3-V supply with an operating temperature range of 0°C to 70°C. The device features a 24-bit delta-sigma architecture supporting sampling rates from 16 kHz to 96 kHz. Key electrical specifications include a signal-to-noise ratio and dynamic range of 100 dB for both ADC and DAC channels. Power consumption is 160 mW during operation and 360 mW in power-down mode.

Codecs Feature Summary

• Supports multiple serial interface formats including IIS, right/left justified, and DSP modes for 16-, 20-, or 24-bit data.
• Integrates digital de-emphasis filters selectable for 32-kHz, 44.1-kHz, and 48-kHz sampling rates.
• Features differential analog inputs for the ADC and single-ended outputs for the DAC.
• Includes internal bandgap voltage reference and high jitter tolerance capabilities.

Codecs Applications

• Mini-disk recording and playback systems
• Audio/video receivers
• Musical instruments requiring high-performance digital audio conversion

Codecs Procurement Notes

Verify component authenticity through authorized distributors or TI directly. Confirm the specific ordering suffix matches the required package type and temperature grade. Review the latest datasheet revision to ensure all electrical characteristics align with current design requirements before finalizing procurement orders.

Codecs Selection Notes

Select this component when a cost-effective stereo codec with 24-bit resolution is required for consumer electronics. Ensure the system supports the necessary master clock frequencies (256 fs or 384 fs) and serial interface protocols. Verify that the 3.3-V supply voltage and 0°C to 70°C operating temperature range meet the application's environmental constraints.

Codecs Part Context

This part belongs to the TLC320AD77 family of stereo audio codecs. It is designed as a cost-competitive solution for applications demanding excellent audio performance. The device integrates both analog-to-digital and digital-to-analog conversion functions into a single chip, simplifying system design for digital audio processing tasks.

Codecs Replacement Considerations

Publicly confirmed substitute part numbers are not available in the provided documentation. Evaluate alternative components based on matching pinout, supply voltage, and serial interface compatibility if direct replacement is necessary.

Codecs FAQ

What serial interface formats does the TLC320AD77C support?

The device supports eight different serial port modes, including IIS, right justified, left justified, and DSP frame formats for word lengths ranging from 16 to 24 bits.

How is the sampling frequency determined?

The sampling frequency is designated by the master clock rate divided by either 256 or 384, depending on the selected speed mode and MCLK configuration.

What is the function of the PDN_RSTB pin?

Holding the PDN_RSTB pin low initiates a reset sequence and places the device in a power-down state. Releasing it triggers a reinitialization sequence where output data becomes valid after 128 LRCLK cycles.