ADA4254ARUZ

Overview

The ADA4254ARUZ 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 of 1 V/V, 1.25 V/V, and 1.375 V/V. 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 GPIO ports. Power consumption is 22 mW at ±12 V supplies. It operates over a temperature range of −40°C to +105°C and is available in a 24-lead TSSOP package.

Feature Summary

• Zero drift amplifier topology self-calibrates DC errors and low frequency noise for excellent precision.
• Integrated ±60 V overvoltage protected input multiplexer switches between two input sources.
• Built-in excitation current sources bias sensors such as resistance temperature detectors.
• SPI interface supports CRC error detection and sequential chip select mode for robust communication.

Applications

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

Procurement Notes

Verify the specific ordering suffix ARUZ corresponds to the 24-lead TSSOP package variant when sourcing. Confirm that the component meets RoHS compliance requirements for your region. Ensure the supply voltage ranges align with system specifications before procurement. Check for any recent revision changes in the datasheet that may affect pinout or electrical characteristics.

Selection Notes

Select this component for applications requiring high voltage inputs and precise signal conditioning. The zero drift architecture minimizes calibration needs across wide temperature ranges. Consider the available gain settings and GPIO flexibility for system integration. Evaluate the power dissipation against thermal constraints in the final enclosure design.

Part Context

This part belongs to Analog Devices' family of programmable gain instrumentation amplifiers. It is optimized for synchronization with analog-to-digital converters. Companion products include ADCs like the AD4007 and voltage references such as the ADR4550. The device addresses the need for robust, low-power signal chains in harsh industrial environments.

Replacement Considerations

The ADA4255 is a similar zero drift, high voltage, programmable gain instrumentation amplifier with charge pump capabilities. Verify pin compatibility and register map differences when substituting. Ensure the replacement supports the required gain range and input protection levels.