AD8223AR

Instrumentation, Op Amps, Buffer Amps Overview

The AD8223AR is a single-supply instrumentation amplifier from Analog Devices, housed in an 8-lead SOIC package. It operates on a supply voltage range of 3 V to 24 V or dual supplies of ±2 V to ±12 V. The device features a gain set by a single external resistor, ranging from 5 to 1000 V/V, with a default gain of 5 when no resistor is connected. Key electrical specifications include a maximum input bias current of 25 nA, a quiescent current of up to 500 μA, and a small-signal bandwidth of 125 kHz at G=5. It provides rail-to-rail output swing and supports an operating temperature range from -40°C to +85°C.

Instrumentation, Op Amps, Buffer Amps Feature Summary

• Gain configuration via a single external resistor allows programmable amplification from 5 to 1000 V/V.
• Rail-to-rail output stage maximizes dynamic range for low-voltage single-supply operation.
• Input common-mode voltage range extends 150 mV below the negative supply rail.
• Low power consumption enables efficient performance in battery-powered applications.

Instrumentation, Op Amps, Buffer Amps Applications

• Low power medical instrumentation
• Transducer interface circuits
• Thermocouple amplifiers
• Industrial process controls
• Low power data acquisition systems

Instrumentation, Op Amps, Buffer Amps Procurement Notes

Verify the specific grade (A or B) required for your application, as offset and CMRR specifications vary between versions. Confirm that the SOIC-8 package matches your PCB footprint. Ensure the selected gain resistor tolerance aligns with system accuracy requirements, as it directly impacts total gain error. Check for RoHS compliance status if environmental regulations apply to your manufacturing process.

Instrumentation, Op Amps, Buffer Amps Selection Notes

Select the AD8223AR for applications requiring high input impedance and low noise with minimal external components. It is suitable for replacing discrete instrumentation amplifier designs due to superior linearity and temperature stability. Consider the 125 kHz bandwidth limit when designing for higher frequency signals. Verify that the load impedance meets the minimum requirement to maintain specified output swing characteristics.

Instrumentation, Op Amps, Buffer Amps Part Context

The AD8223 belongs to the AD8223 series of single-supply instrumentation amplifiers. It shares architectural similarities with other general-purpose instrumentation amplifiers but is optimized for low-cost, low-power implementations. The device conforms to industry-standard pinout configurations, facilitating drop-in replacements for certain legacy designs while offering improved performance in space-constrained environments.

Instrumentation, Op Amps, Buffer Amps Replacement Considerations

Direct functional substitutes within the same family include the AD8223ARZ and AD8223AR-R7. These variants share identical electrical specifications and pinouts but differ in packaging formats such as tube or reel. Verify that any replacement part maintains the same SOIC-8 package dimensions and thermal characteristics.