AD744BQ

Instrumentation, Op Amps, Buffer Amps Overview

The AD744BQ is a precision, fast-settling BiFET operational amplifier manufactured by Analog Devices Inc. It features a single circuit configuration housed in an 8-lead ceramic dual in-line package (Q-8). The device operates within an industrial temperature range of -40°C to +85°C and supports supply voltages up to ±18 V. Key electrical specifications include a maximum input offset voltage of 0.5 mV, a typical slew rate of 75 V/µs, and a gain bandwidth product of 13 MHz. It draws a quiescent current of 3.5 mA and provides a short-circuit output current of 25 mA.

Instrumentation, Op Amps, Buffer Amps Feature Summary

• Fast settling time capability with a single-pole response for high-speed applications
• High DC precision utilizing laser wafer drift trimming and matched ion-implanted JFETs
• External compensation options enabling stable unity-gain follower operation and capacitive load driving
• Decompensation feature allowing extended gain bandwidth at higher closed-loop gains

Instrumentation, Op Amps, Buffer Amps Applications

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

Instrumentation, Op Amps, Buffer Amps Procurement Notes

Verify the specific suffix 'BQ' corresponds to the industrial grade (-40°C to +85°C) and hermetic 8-lead Cerdip package. Confirm RoHS compliance status as standard BQ parts may not be lead-free compared to Z-suffix variants. Ensure the ordering guide matches the required performance grade against other available models like AD744AQ or AD744JNZ.

Instrumentation, Op Amps, Buffer Amps Selection Notes

Select the AD744BQ when industrial temperature stability and hermetic packaging are required. It offers superior settling speed and bandwidth compared to the AD711 family. Use external compensation for unity-gain stability or decompensation for high-frequency applications requiring gain bandwidth exceeding 200 MHz at high gains.

Instrumentation, Op Amps, Buffer Amps Part Context

The AD744 series represents a high-speed BiFET op amp line from Analog Devices, designed to outperform legacy devices like the LF356 and LF400. The AD744BQ specifically denotes the industrial temperature variant packaged in a hermetic ceramic dual in-line format, providing robustness for demanding environments while maintaining the core fast-settling characteristics of the family.

Instrumentation, Op Amps, Buffer Amps Replacement Considerations

Public confirmed substitutes include AD744AQ for identical performance in the same Q-8 package.