PCM1798DBR

ADCs/DACs - Special Purpose Overview

The PCM1798DBR is a stereo audio digital-to-analog converter (DAC) manufactured by Texas Instruments. It features a 24-bit resolution and supports sampling rates up to 192 kHz. The device utilizes a serial interface for data input and provides two analog outputs. Key electrical specifications include a signal-to-noise ratio (SNR) of 123 dB, a gain error of 7% full-scale range (FSR), and an operating supply current of 20 mA. It operates within a voltage range of 4.75 V to 5.25 V and functions in temperatures from -25°C to +85°C. The component is housed in a 28-pin SSOP package.

ADCs/DACs - Special Purpose Feature Summary

• 24-bit resolution with 192 kHz maximum sampling rate
• 123 dB signal-to-noise ratio (SNR)
• Serial (3-Wire) interface compatibility
• SSOP-28 surface-mount packaging

ADCs/DACs - Special Purpose Applications

• High-fidelity audio systems
• Professional audio equipment
• Home theater receivers

ADCs/DACs - Special Purpose Procurement Notes

Verify the specific datasheet revision and RoHS compliance status directly with Texas Instruments or authorized distributors before procurement. Confirm that the SSOP-28 package dimensions match the target PCB footprint requirements. Ensure power supply rails are stable within the 4.75 V to 5.25 V range to maintain specified performance metrics.

ADCs/DACs - Special Purpose Selection Notes

Select the PCM1798DBR when a 24-bit stereo DAC with 192 kHz support and a serial interface is required. Compare SNR and gain error specifications against alternative models if higher precision is needed. Consider the SSOP-28 package constraints during layout design. Verify interface compatibility with the host microcontroller or processor.

ADCs/DACs - Special Purpose Part Context

This component belongs to the PCM1798 series of audio DACs from Texas Instruments. It shares the SSOP-28 form factor with other devices in the family but differs in interface type and specific performance parameters. The 'DBR' suffix indicates the SSOP-28 package and reel tape packaging configuration.

ADCs/DACs - Special Purpose Replacement Considerations

The PCM1796DBR offers similar 24-bit/192 kHz performance but uses I2C/SPI interfaces instead of serial. The PCM1792ADBR provides improved SNR (127 dB) and lower gain error (6%) with I2C/SPI support. Verify pinout and interface compatibility before substitution.