AD8555ACP-REEL7

Overview

The AD8555ACPZ-REEL7 is a zero-drift, sensor signal amplifier with digitally programmable gain and output offset. It operates on single-supply voltages from 2.7 V to 5.5 V within an extended temperature range of −40°C to +125°C. The device features a maximum input offset voltage of 10 µV and a drift of 60 nV/°C. Gain is digitally programmable from 70 to 1,280 via a single-wire serial interface. It offers a minimum CMRR of 96 dB, a supply current of 2.5 mA, and a slew rate of 1.2 V/µs. The component is housed in a 16-lead LFCSP package.

Feature Summary

• Digitally programmable gain and output offset voltage using DigiTrim technology
• Zero-drift architecture with low noise auto-zero circuitry for high accuracy
• Integrated open and short wire fault detection capabilities
• Externally programmable output clamp voltage for safe ADC driving

Applications

• Pressure and position sensors
• Thermocouple amplifiers
• Industrial weigh scales
• Precision current sensing
• Strain gages

Procurement Notes

Verify the specific suffix 'ACPZ-REEL7' against the manufacturer's official ordering guide to confirm the LFCSP-16 packaging and reel quantity specifications. Ensure compatibility with the required digital programming interface timing parameters before integration. Cross-reference the datasheet revision history for any updates to electrical characteristics or pin configurations that may affect existing designs.

Selection Notes

Select this component when designing systems requiring high precision with minimal calibration due to its ultra-low offset voltage and drift. The single-wire serial interface simplifies board layout compared to multi-pin digital interfaces. Consider the externally programmable output clamp feature if interfacing directly with lower-voltage analog-to-digital converters without additional level shifting circuitry.

Part Context

This part belongs to the AD8555 family of zero-drift instrumentation amplifiers designed for bridge sensor applications. It utilizes Analog Devices' patented auto-zero and DigiTrim technologies to achieve high DC accuracy. The device integrates both the main amplifier stages and the digital control logic into a compact footprint, reducing the need for external components typically required for gain adjustment and offset nulling in traditional instrumentation amplifiers.

Replacement Considerations

Consult the official datasheet ordering guide for direct pin-compatible alternatives such as the AD8555ARZ or other variants within the AD8555 series. Verify that substitute parts maintain the same LFCSP-16 package dimensions and thermal characteristics to ensure mechanical fit.