AD842JQ

Instrumentation, Op Amps, Buffer Amps Overview

The AD842JQ is a wideband, high output current operational amplifier manufactured by Analog Devices Inc. It utilizes a junction isolated complementary bipolar process to achieve an 80 MHz gain bandwidth product and a 375 V/µs slew rate. The device settles to within 0.01% of a 10 V step in 100 ns. Key electrical specifications include a maximum input offset voltage of 1.5 mV, a minimum output current of 100 mA, and a quiescent supply current of 14 mA. It operates on dual supplies ranging from ±5 V to ±18 V.

Instrumentation, Op Amps, Buffer Amps Feature Summary

• Fast settling time of 100 ns to 0.01% for a 10 V step
• High output current drive capability with a minimum of 100 mA
• Low input offset voltage of 1.5 mV maximum
• Wide bandwidth performance with an 80 MHz gain bandwidth product

Instrumentation, Op Amps, Buffer Amps Applications

• Line drivers
• DAC and ADC buffers
• Video and pulse amplifiers

Instrumentation, Op Amps, Buffer Amps Procurement Notes

Verify the specific ordering suffix JQ corresponds to the 14-Lead Ceramic Dual In-Line Package (Q-14) as listed in the official Analog Devices Ordering Guide. Confirm that the component meets the required operating temperature range of 0°C to 70°C. Ensure compatibility with the specified ±5 V to ±18 V supply voltage limits before integration into the design.

Instrumentation, Op Amps, Buffer Amps Selection Notes

Select this component when high-speed signal conditioning requires rapid settling characteristics combined with significant output current drive. It is suitable for applications demanding wide bandwidth active filters or precision buffering where low input offset voltage minimizes the need for external nulling circuits. Consider thermal management if driving low impedance loads continuously.

Instrumentation, Op Amps, Buffer Amps Part Context

The AD842JQ belongs to the AD842 family of wideband operational amplifiers produced by Analog Devices. This series is distinguished by its combination of DC precision and AC performance, enabled by a specialized junction isolated complementary bipolar fabrication process. The family includes variants in plastic DIP, ceramic DIP, SOIC, and chip forms to accommodate different packaging and environmental requirements.

Instrumentation, Op Amps, Buffer Amps Replacement Considerations

The AD842JN serves as a direct package alternative using a 14-Lead Plastic Dual In-Line format. The AD842KQ offers a similar ceramic package but with tighter input offset voltage specifications. Verify pinout and thermal characteristics when substituting between these variants.