PCM1742E

ADCs/DACs - Special Purpose Overview

The PCM1742E is a 24-bit, 192-kHz sampling audio digital-to-analog converter (DAC) manufactured by Burr-Brown. It utilizes an enhanced multilevel delta-sigma modulation architecture to achieve high-fidelity audio conversion. The device supports standard serial audio interfaces and includes integrated digital filters for oversampling. Key performance metrics include a typical dynamic range of 118 dB and a signal-to-noise ratio of 116 dB. It operates on a single 3.3V supply voltage and is housed in a compact TSSOP-20 package, suitable for space-constrained high-end audio applications.

ADCs/DACs - Special Purpose Feature Summary

• 24-bit resolution with 192-kHz maximum sampling rate
• Enhanced multilevel delta-sigma modulation technology
• Typical dynamic range of 118 dB and SNR of 116 dB
• Integrated digital filter with selectable decimation ratios

ADCs/DACs - Special Purpose Applications

• High-fidelity stereo audio systems
• Professional audio equipment
• Home theater receivers
• Digital audio workstations

ADCs/DACs - Special Purpose Part Context

The PCM1742E belongs to the Burr-Brown PCM17xx series of high-performance audio DACs. This family is characterized by the use of enhanced multilevel delta-sigma modulation, which distinguishes it from standard binary delta-sigma converters by offering improved linearity and reduced distortion at high frequencies. The E suffix indicates the commercial temperature grade variant.

ADCs/DACs - Special Purpose Replacement Considerations

Direct pin-compatible replacements within the same family include the PCM1742B for industrial temperature ranges. For system upgrades, newer generations such as the PCM179x series offer improved specifications but may require schematic adjustments due to different interface requirements or pinouts.