AD7856ARSZ-REEL7

Overview

The AD7856ARSZ-REEL7 is a high-speed, low-power 14-bit analog-to-digital converter manufactured by Analog Devices Inc. It operates from a single 5 V supply and features an 8-channel multiplexer supporting eight single-ended or four pseudo-differential inputs. The device delivers a throughput rate of 285 kSPS with a typical power consumption of 60 mW in normal mode. It utilizes a successive approximation register (SAR) architecture and includes self-calibration and system calibration options to maintain accuracy over time and temperature variations.

Feature Summary

• Supports flexible serial interface modes compatible with SPI, QSPI, 8051, and microprocessor systems.
• Includes automatic power-down capabilities after conversion for optimized energy efficiency.
• Features on-chip self-calibration and system calibration logic to ensure precision across operating conditions.

Applications

• Battery-powered personal digital assistants and mobile communication devices
• Pen computers and portable instrumentation systems
• High-speed modem applications requiring multi-channel data acquisition

Procurement Notes

Verify the specific REEL7 suffix configuration against the manufacturer's current ordering guide to confirm tape and reel specifications. Confirm that the component meets RoHS compliance requirements for your target market. Ensure proper electrostatic discharge handling procedures are followed during storage and assembly due to the sensitivity of the CMOS construction.

Selection Notes

Select this component when a single 5 V supply operation is required alongside high channel count multiplexing. Consider the 285 kSPS throughput and 14-bit resolution for applications demanding moderate speed and high precision. Evaluate the available power-down modes if battery life is a critical constraint in the system design.

Part Context

This part belongs to the AD7856 series of 8-channel, 14-bit sampling ADCs. It shares functional characteristics with variants such as the AD7856ANZ and AD7856ARZ, differing primarily in package type and manufacturing revision. The series is designed for general-purpose data acquisition tasks requiring multiple input channels.

Replacement Considerations

Publicly confirmed substitute part numbers are not available in the provided documentation. Verify compatibility with existing system interfaces and voltage levels before considering alternative components from other manufacturers.