AD8555ACPZ-REEL

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 REEL7 indicates tape-and-reel packaging when sourcing. Confirm the LFCSP-16 package type matches the design requirements. Ensure the operating environment stays within the specified -40°C to +125°C range. Check for availability constraints as distribution status may vary. Validate pinout compatibility with existing PCB layouts before integration.

Selection Notes

Select this component for applications requiring high precision bridge sensor signal conditioning. The digital interface allows for in-circuit gain and offset adjustments without external resistors. Consider the 16-lead LFCSP package for compact board space requirements. Ensure the system can accommodate the single-wire serial programming interface timing. Verify that the output clamp feature meets the downstream ADC input voltage limits.

Part Context

The AD8555 belongs to Analog Devices' family of zero-drift instrumentation amplifiers. It utilizes patented low noise auto-zero and DigiTrim technologies to minimize DC errors. The device is designed to convert variable pressure sensor and strain bridge outputs accurately. It provides a flexible signal processing solution in a compact footprint suitable for industrial and measurement systems.

Replacement Considerations

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