PCM1702P-KG4

ADCs/DACs - Special Purpose Overview

The PCM1702P-KG4 is a BiCMOS advanced sign magnitude 20-bit digital-to-analog converter manufactured by Texas Instruments. It features ultra-low distortion with a maximum THD+N of –96dB and a typical idle channel SNR of 120dB using the A-weighted method. The device operates on dual ±5V supplies, consuming approximately 150mW of power. It supports serial data input formats with a maximum clock frequency of 20MHz and provides a fast settling current output of ±1.2mA in 200ns. The component is housed in a 16-pin plastic DIP package and functions within an operating temperature range of –25°C to +85°C.

ADCs/DACs - Special Purpose Feature Summary

• Advanced Sign Magnitude Architecture: Eliminates glitches and nonlinearities around bipolar zero for near-ideal low-level operation.
• High Dynamic Performance: Achieves 120dB typical SNR (A-weighted) and –96dB max THD+N without external adjustment.
• Fast Current Output: Provides ±1.2mA output with a settling time of 200ns for a 1.2mA step.
• Integrated Reference: Includes internal reference circuitry, reducing external component requirements.

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 component authenticity through authorized distributors or direct manufacturer channels. Confirm RoHS3 compliance status as indicated by the KG4 suffix. Check for obsolescence notices or lifetime-buy periods from Texas Instruments prior to procurement planning.

ADCs/DACs - Special Purpose Selection Notes

Select this component for designs requiring high-resolution 20-bit conversion with minimal distortion. Ensure the system supports serial MSB-first binary two's complement data formats. Verify that the application can accommodate dual ±5V power supplies and TTL/CMOS compatible logic levels.

ADCs/DACs - Special Purpose Part Context

The PCM1702 series represents Burr-Brown's advanced sign magnitude technology, combining conventional DAC advantages with superior low-level performance. The PCM1702P-KG4 is a specific grade variant within the 16-pin PDIP package family, designed for precision audio applications where glitch-free output and high dynamic range are critical.

ADCs/DACs - Special Purpose Replacement Considerations

Public confirmed substitute part numbers include PCM1795DB and PCM1795DBR from Texas Instruments.

ADCs/DACs - Special Purpose FAQ

What is the maximum clock frequency for the PCM1702?

The maximum input clock frequency is 20.0 MHz.

How does the PCM1702 handle bipolar zero transitions?

It uses an advanced sign magnitude architecture that eliminates unwanted glitches and nonlinearities around bipolar zero, ensuring monotonicity.

What is the typical power dissipation at ±5V supply?

The typical power dissipation is 150 mW when supplied with ±5V.