AD7872ANZ

Overview

The AD7872ANZ is a complete monolithic 14-bit analog-to-digital converter (ADC) fabricated in LC2MOS technology. It operates from ±5 V power supplies and accepts bipolar input signals within a ±3 V range. The device integrates a track-and-hold amplifier, successive approximation ADC, and a 3 V buried Zener reference. It provides an 83 kSPS throughput rate with a typical power dissipation of 50 mW. The component features a serial digital interface only, utilizing SSTRB, SCLK, and SDATA pins for data transmission.

Feature Summary

• Serial-only data output format
• Integrated laser-trimmed internal clock
• On-chip temperature-compensated 3 V reference

Applications

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

Procurement Notes

Verify the specific ordering suffix to confirm package type and temperature grade. The ANZ suffix indicates a lead-free RoHS-compliant variant. Confirm availability through authorized Analog Devices distributors or verified electronic component suppliers. Ensure the procurement channel provides valid traceability documentation.

Selection Notes

Select this component when a serial interface is required instead of parallel access. The AD7871 offers parallel options, but the AD7872 is restricted to serial output. Verify that the system timing accommodates the serial clock constraints and pull-up resistor requirements for SCLK and SDATA lines.

Part Context

This part belongs to the AD7871/AD7872 family of 14-bit sampling ADCs. Both devices share identical core specifications and architecture. The primary distinction lies in the digital interface configuration, where the AD7872 is dedicated exclusively to serial communication protocols.

Replacement Considerations

The AD7871KRZ serves as a functional substitute offering parallel and byte interfaces. Verify pin compatibility and interface logic differences before substitution.