ADA4254ARUZ-RL

Overview

The ADA4254ARUZ-RL is a zero drift, high voltage, low power programmable gain instrumentation amplifier (PGIA) from Analog Devices Inc. It features 12 binary gain steps from 1/16 V/V to 128 V/V and three scaling gains of 1 V/V, 1.25 V/V, and 1.375 V/V. The device offers 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 with ±12 V supplies. It operates over a temperature range of −40°C to +105°C and is available in 28-lead LFCSP and 24-lead TSSOP packages.

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 internal fault detection for safety integrity.

Applications

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

Procurement Notes

Verify the specific package variant required, as the base part number covers both 28-lead LFCSP and 24-lead TSSOP options. Confirm that the -RL suffix corresponds to the reel packaging format intended for your assembly line. Ensure compatibility with the specified supply voltages and digital logic levels before finalizing procurement orders.

Selection Notes

Select this component when system requirements demand high DC precision combined with robust input protection against high voltage transients. The integrated multiplexer and excitation currents simplify designs involving RTDs or dual-channel signal switching. Consider the low power consumption for battery-operated or thermally constrained industrial environments requiring minimal calibration overhead.

Part Context

This device belongs to the ADA4254 family of programmable gain instrumentation amplifiers designed for industrial applications. It complements other Analog Devices components such as ADCs (AD4007, AD7768) and voltage references (ADR4550). The zero drift technology distinguishes it from standard PGIA solutions by eliminating the need for frequent external calibration cycles.

Replacement Considerations

No public confirmed substitute part numbers are documented in the provided source material.