AD744KR

Instrumentation, Op Amps, Buffer Amps Overview

The AD744KR is a precision, fast-settling BiFET operational amplifier manufactured by Analog Devices Inc. It features a gain bandwidth product of 13 MHz and a slew rate of 75 V/µs. The device offers a maximum input offset voltage of 0.5 mV and an input bias current of 100 pA at +25°C. Operating within a supply range of ±4.5 V to ±18 V, it consumes 3.5 mA of quiescent current. The component is housed in an 8-lead SOIC package and supports operation from 0°C to +70°C.

Instrumentation, Op Amps, Buffer Amps Feature Summary

• Fast settling time of 500 ns to 0.01% for a 10 V step
• Low total harmonic distortion of 0.0003%
• Option for external compensation to drive capacitive loads up to 2000 pF
• External decompensation capability to extend gain bandwidth beyond 200 MHz

Instrumentation, Op Amps, Buffer Amps Applications

• Output buffers for 12-bit, 14-bit, and 16-bit DACs
• ADC buffers
• Wideband preamplifiers
• Active filters in data acquisition systems

Instrumentation, Op Amps, Buffer Amps Procurement Notes

Verify the specific suffix 'KR' against the manufacturer's ordering guide to confirm the commercial temperature rating (0°C to +70°C) and SOIC-8 package type. Ensure compatibility with RoHS standards if required by the design specifications. Cross-reference the part number with official distributor listings to confirm current availability status.

Instrumentation, Op Amps, Buffer Amps Selection Notes

Select this component when high-speed settling and low distortion are critical requirements. The internal compensation ensures stability as a unity gain inverter or non-inverting amplifier with gains of two or greater. External components can be added to optimize performance for unity gain follower configurations or heavy capacitive loads.

Instrumentation, Op Amps, Buffer Amps Part Context

The AD744KR belongs to the AD744 family of BiFET operational amplifiers. This series combines the excellent DC characteristics of the AD711 family with enhanced AC performance metrics. The K grade specifically denotes the commercial temperature range variant within the broader product line that includes industrial and military grades.

Instrumentation, Op Amps, Buffer Amps Replacement Considerations

AD744JRZ

Instrumentation, Op Amps, Buffer Amps FAQ

How does the AD744 handle capacitive loads?

The AD744 can drive capacitive loads up to 1000 pF without external compensation. For larger loads, such as 2000 pF, a compensation capacitor connected between pins 5 and 8 is recommended to maintain stability.

Can the gain bandwidth be increased?

Yes, by using external decompensation. Connecting a small capacitor between pins 1 and 5 cancels the internal compensation effect, allowing the gain bandwidth to exceed 200 MHz at high closed-loop gains.