PCM1702U/2KE6

ADCs/DACs - Special Purpose Overview

The PCM1702U/2KE6 is a BiCMOS Advanced Sign Magnitude 20-bit digital-to-analog converter in a 20-pin SOP package. It features ultra-low THD+N of -96dB max and typical SNR of 120dB (A-weighted). The device accepts serial MSB-first data at up to 20MHz clock frequency, supporting 16x oversampling. It operates on ±5V supplies with typical power dissipation of 150mW. Key specifications include a 200ns settling time, ±1.2mA current output, and glitch-free operation around bipolar zero.

ADCs/DACs - Special Purpose Feature Summary

• Advanced sign magnitude architecture eliminates glitches and nonlinearities around bipolar zero
• Ultra-low distortion: -96dB max THD+N without external adjustment
• High signal-to-noise ratio: 120dB typical (A-weighted method)
• Fast current output with 200ns settling time for 1.2mA step

ADCs/DACs - Special Purpose Applications

• High-end consumer digital audio applications
• Professional digital audio systems
• Very low distortion frequency synthesis

ADCs/DACs - Special Purpose Procurement Notes

Verify the E6 suffix against the official datasheet to confirm it denotes environmental compliance or specific manufacturing lot attributes rather than functional changes. Confirm the SOP-20 package type and 2000-unit reel quantity associated with the /2K designation. Ensure the component meets the specified ±5V supply requirements and TTL/CMOS logic levels for proper integration.

ADCs/DACs - Special Purpose Selection Notes

Select this component when 20-bit resolution and near-ideal low-level linearity are required. The advanced sign magnitude architecture is suitable for applications sensitive to errors at the bipolar zero transition. Verify that the system can support the 352.8kHz sampling rate (8x oversampling) and the 20MHz maximum input clock frequency for optimal performance.

ADCs/DACs - Special Purpose Part Context

The PCM1702 is part of the Burr-Brown family of precision DACs acquired by Texas Instruments. It utilizes a complementary dual-DAC structure with shared reference and R-2R ladder to ensure perfect tracking. This design achieves high accuracy without the noise penalties often associated with sigma-delta architectures, providing true 20-bit resolution capability.

ADCs/DACs - Special Purpose Replacement Considerations

PCM1702P: DIP-16 package variant. PCM1702U-J: Grade J variant with -92dB max THD+N. PCM1702U-K: Grade K variant with -100dB max THD+N. PCM1702U/2K: Standard grade SOP-20 reel variant.