AD7871JPZ-REEL

Overview

The AD7871JPZ-REEL is a complete monolithic 14-bit analog-to-digital converter (ADC) fabricated in LC2MOS technology. It features an internal track-and-hold amplifier, successive approximation ADC, and a 3 V buried Zener reference. The device operates from ±5 V power supplies with a typical power dissipation of 50 mW. It supports a throughput rate of 83 kSPS and accepts bipolar input signals within a ±3 V range. The component provides three data output formats: 14-bit parallel, two 8-bit bytes, or a 14-bit serial stream. It utilizes a self-contained laser-trimmed internal clock, eliminating the need for external timing components.

Feature Summary

• Offers versatile digital interface options including parallel, byte, and serial data output formats.
• Integrates a high-speed track-and-hold amplifier capable of acquiring signals to 14-bit accuracy in under 2 μs.
• Contains a factory-trimmed, temperature-compensated 3 V buried Zener voltage reference.
• Features a self-contained laser-trimmed internal clock oscillator for simplified system design.

Applications

• Digital signal processing
• High speed modems
• Speech recognition and synthesis
• Spectrum analysis
• DSP servo control

Procurement Notes

Verify that the ordering suffix REEL indicates tape and reel packaging rather than tube packaging. Confirm the specific temperature grade associated with the J suffix matches the required operational environment. Ensure the datasheet revision aligns with the manufacturing lot date code to verify current specifications.

Selection Notes

Select this component when a 14-bit resolution and 83 kSPS sampling rate are required. Choose this part over the AD7872 if parallel or byte-mode data access is necessary. Verify that the ±5 V supply rails and ±3 V input range fit the system architecture. Consider the PLCC package dimensions for PCB layout constraints.

Part Context

This component belongs to the AD7871/AD7872 family of LC2MOS sampling ADCs. It shares core architectural features with the AD7872 but differs in interface capabilities. The AD7871 supports multiple data formats, whereas the AD7872 is restricted to serial output only. Both devices utilize the same underlying conversion technology and power requirements.

Replacement Considerations

Public confirmed substitute part numbers are not available in the provided documentation.