ADA4254ACPZ

Overview

The ADA4254ACPZ is a zero drift, high voltage, low power programmable gain instrumentation amplifier (PGIA) designed for process control and industrial applications. It features 12 binary weighted gains from 1/16 V/V to 128 V/V and three scaling options (1 V/V, 1.25 V/V, 1.375 V/V), providing 36 possible gain settings. The device offers excellent DC precision with an input offset voltage of ±14 μV maximum and drift of ±0.08 μV/°C. It includes a ±60 V protected input multiplexer, integrated EMI filtering, and seven GPIOs with special functions like excitation current sources. Power consumption is 22 mW at ±12 V supplies. It operates over a temperature range of −40°C to +105°C in a 28-lead LFCSP package.

Feature Summary

• Zero drift topology self-calibrates DC errors and low frequency noise for excellent DC precision across the specified temperature range.
• Integrated input multiplexer provides ±60 V protection and switching capability between two input sources while blocking harsh RF noise via EMI filters.
• Includes safety features such as internal fault detection and SPI CRC support to facilitate system SIL certification.
• Features seven configurable GPIO pins including excitation current sources for biasing sensors like RTDs.

Applications

• Universal process control front ends
• Data acquisition systems
• Test and measurement systems

Procurement Notes

Verify the specific ordering suffix matches the required package type, as the ADA4254 family includes both 28-lead LFCSP and 24-lead TSSOP variants. Confirm that the ACPZ suffix corresponds to the Lead-Free LFCSP package intended for your design. Ensure compatibility with the required supply voltages and digital interface levels before procurement.

Selection Notes

Select this component when high DC precision and robustness are required in industrial environments. The zero drift architecture minimizes calibration needs. Consider the wide dynamic range and multiple gain settings for versatile signal conditioning. Evaluate the need for the integrated multiplexer and excitation currents to simplify external circuitry.

Part Context

The ADA4254 is part of Analog Devices' portfolio of precision amplifiers designed for demanding industrial applications. It complements companion products like the AD4007 ADC and ADA4945-1 driver. The device addresses the need for high-performance signal conditioning in process control systems where accuracy and reliability are critical.

Replacement Considerations

Public confirmed substitute part numbers: None listed in source material.