HSP43891JC-20

Overview

The HSP43891JC-20 is a high-speed analog-to-digital converter manufactured by Harris Corporation. It features an 8-bit resolution and operates with a sampling rate of 20 MSPS. The device utilizes a single +5V power supply and incorporates a built-in voltage reference and sample-and-hold amplifier. Designed for surface-mount applications, it is housed in a 28-pin plastic DIP package. Key electrical specifications include a full-power bandwidth of 15 MHz and a typical input capacitance of 2 pF, ensuring accurate signal acquisition for demanding data conversion tasks.

Feature Summary

• Integrates a high-speed sample-and-hold amplifier to maintain signal integrity during conversion cycles.
• Includes an internal voltage reference circuit to simplify system design and reduce component count.
• Supports direct interfacing with microprocessors through parallel digital output lines.

Applications

• Medical imaging systems requiring fast data acquisition
• Industrial process control and monitoring
• Test and measurement instrumentation

Procurement Notes

Verify the specific suffix 'JC' to confirm the package type and temperature rating before ordering. Ensure compatibility with existing board layouts regarding pin configurations and thermal requirements. Check for RoHS compliance status as older manufacturing runs may differ from current production standards.

Selection Notes

Select this component when an 8-bit resolution at 20 MSPS is required within a single +5V supply constraint. Compare against newer alternatives if lower power consumption or higher resolution is necessary. Validate that the parallel interface matches the target processor's timing capabilities.

Part Context

This part belongs to the HSP43891 series of high-speed ADCs from Harris Semiconductor. It represents a specialized solution for mid-range speed applications where integrated references and sample-and-hold functions are critical. The series was designed to bridge the gap between slower precision converters and ultra-high-speed devices.

Replacement Considerations

Consider the HSP50006 or HSP43891 variants for similar performance profiles. Verify pinout compatibility and electrical parameters before substituting. Newer generations may offer improved linearity or lower power but require interface adjustments.