AD8290ACPZ-RL

Instrumentation, Op Amps, Buffer Amps Overview

The AD8290ACPZ-RL is a CMOS sensor amplifier integrating a difference amplifier with fixed gain of 50 and an adjustable current source. It operates on a supply voltage range of 2.6 V to 5.5 V with quiescent current of 1.2 mA plus twice the excitation current. The device features low input bias current of ±100 pA, high common-mode rejection ratio of 120 dB, and shutdown current of 0.5 μA. Excitation current ranges from 300 μA to 1300 μA, set by an external resistor. It functions within an industrial temperature range of −40°C to +85°C in a 16-lead LFCSP package.

Instrumentation, Op Amps, Buffer Amps Feature Summary

• Integrates a precision instrumentation amplifier with fixed gain of 50 and an adjustable current source for sensor excitation.
• Utilizes auto-zero architecture to continuously correct offset errors, ensuring high common-mode rejection and power supply rejection.
• Features low power consumption with programmable shutdown mode reducing quiescent current significantly.
• Provides rail-to-rail output capability suitable for single-supply operation.

Instrumentation, Op Amps, Buffer Amps Applications

• Pressure sensor bridge drives
• Temperature sensor applications including RTD interfaces
• Strain gage bridge circuits
• Portable electronics requiring low power drive/sense solutions

Instrumentation, Op Amps, Buffer Amps Procurement Notes

Verify the specific suffix RL indicates reel packaging configuration against official Analog Devices documentation. Confirm the LFCSP-16 package dimensions and thermal characteristics match board layout requirements. Ensure compatibility with the required RSET resistor values for desired excitation current levels. Check RoHS compliance status as specified in the manufacturer's ordering guide.

Instrumentation, Op Amps, Buffer Amps Selection Notes

Select this component when a combined sensor drive and signal amplification solution is required in a compact form factor. The fixed gain of 50 simplifies circuit design for standard bridge sensors. Consider the low input bias current for high-impedance sources. Evaluate the need for the integrated current source versus discrete solutions based on board space constraints.

Instrumentation, Op Amps, Buffer Amps Part Context

The AD8290 belongs to the family of CMOS sensor amplifiers designed by Analog Devices. It combines sensing and driving functionalities into a single IC, reducing component count. The ACPZ variant denotes the lead-free LFCSP package. This integration supports miniaturization in portable measurement devices where space and power are critical constraints.

Instrumentation, Op Amps, Buffer Amps Replacement Considerations

Check Analog Devices datasheet for direct pin-compatible alternatives within the same series. Verify if other models offer different gain settings or package options while maintaining similar electrical characteristics. Ensure any substitute supports the required 2.6 V to 5.5 V supply range and industrial temperature specifications.