ADA4254ACPZ-R7

Overview

The ADA4254ACPZ-R7 is a zero drift, high voltage, low power programmable gain instrumentation amplifier (PGIA) manufactured by Analog Devices Inc. It features a 28-lead LFCSP package and operates within a specified temperature range of −40°C to +105°C. The device offers 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. Key electrical specifications include a maximum input offset voltage of ±14 μV, a maximum input offset voltage drift of ±0.08 μV/°C, and a minimum common-mode rejection ratio (CMRR) of 116 dB at G = 1 V/V. The amplifier supports a wide supply range with VDDH-VSSH up to 56 V and AVDD-AVSS up to 5 V.

Feature Summary

• Zero drift amplifier topology that self-calibrates DC errors and low frequency 1/f noise for excellent DC precision across the operating temperature range.
• Integrated ±60 V protected input multiplexer allowing switching between two input sources while blocking harsh RF noise via integrated EMI filters.
• Seven general-purpose input/output (GPIO) pins configurable for special functions including sequential chip select mode, external multiplexer control, and excitation current sources.
• SPI interface with CRC checksum support for robust communication, enabling internal fault detection, wire break test currents, and on-chip test multiplexer functionality.

Applications

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

Procurement Notes

Verify the specific ordering suffix R7 indicates reel packaging when sourcing this component. Confirm the manufacturer part number matches ADA4254ACPZ-R7 exactly to ensure the correct LFCSP-28 package variant. Check for RoHS compliance status as indicated in official documentation. Ensure compatibility with required supply voltages before integration into the design.

Selection Notes

Select this component for applications requiring high precision and robustness in industrial environments. The zero drift architecture minimizes calibration requirements compared to standard instrumentation amplifiers. Consider the available gain settings and GPIO flexibility for system integration. Verify thermal performance requirements against the specified junction-to-ambient resistance values for the LFCSP package.

Part Context

This device belongs to the ADA4254 family of programmable gain instrumentation amplifiers designed for process control and industrial applications. It complements companion products such as ADCs (AD4007, AD7768), ADC drivers (ADA4945-1), and voltage references (ADR4550). The family emphasizes safety integrity level (SIL) certification support through integrated fault detection and robust digital interfaces.

Replacement Considerations

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