PCM2902E/2K

Codecs Overview

The PCM2902E/2K is a stereo audio CODEC manufactured by Texas Instruments, designed for USB 1.1 connectivity with Human Interface Device (HID) interface support. It integrates a single DAC and operates within a temperature range of 0°C to +70°C. The device features 16-bit resolution and supports sampling rates up to 48 ksps. Key performance metrics include a signal-to-noise ratio of 89 dB and 96 dB, with total harmonic distortion plus noise specified at 0.01% for the ADC and 0.005% for the DAC. It is housed in a 28-pin SSOP package and utilizes single-ended I/O alongside S/PDIF capabilities.

Codecs Feature Summary

• Integrates USB 1.1 interface with HID compatibility for direct host connection
• Provides stereo audio conversion with 16-bit resolution
• Supports both single-ended analog I/O and S/PDIF digital interfaces

Codecs Applications

• USB audio peripherals requiring low-latency stereo playback
• Consumer electronics utilizing USB HID audio class compliance
• Embedded systems integrating digital audio input/output via S/PDIF

Codecs Procurement Notes

Verify component authenticity through authorized distributors or direct manufacturer channels. Confirm the specific suffix designation matches project requirements, as packaging variations exist. Check current lifecycle status, as this model may be marked as Not Recommended for New Designs. Ensure supply chain stability due to potential long lead times associated with legacy components.

Codecs Selection Notes

Select this component when USB HID audio compliance is mandatory for the application. Compare against PCM2900E if S/PDIF functionality is not required, as the PCM2902E adds digital output capabilities. Verify that the 28-pin SSOP footprint aligns with existing PCB layouts. Consider thermal management within the 0°C to +70°C operating range for enclosed designs.

Codecs Part Context

This part belongs to the PCM2902 series of stereo audio CODECs from Texas Instruments. It shares architectural similarities with the PCM2900E but includes additional S/PDIF output features. The '/2K' suffix typically indicates tube packaging quantities, distinguishing it from reel-based variants. It serves as a bridge between digital USB hosts and analog audio outputs.

Codecs Replacement Considerations

Publicly confirmed substitute part numbers are not available in the provided documentation. The PCM2900E offers similar core functionality but lacks S/PDIF support. Designers should evaluate pinout compatibility and firmware implications before considering alternative models within the same family.