AD797BR

Instrumentation, Op Amps, Buffer Amps Overview

The AD797BR is a single-channel, ultralow noise and low distortion operational amplifier manufactured by Analog Devices Inc. It features a typical input voltage noise of 0.9 nV/√Hz at 1 kHz and a total harmonic distortion of -120 dB at 20 kHz. The device offers a gain bandwidth product of 110 MHz, a slew rate of 20 V/µs, and an output drive current of 50 mA. It operates within a supply voltage range of ±5 V to ±15 V and supports a maximum input resistance of 100 MOhms with a common-mode rejection ratio of 120 dB. The component is housed in an SOIC-8 surface-mount package and functions across a temperature range of -40°C to +85°C.

Instrumentation, Op Amps, Buffer Amps Feature Summary

• Ultralow noise performance with minimal total harmonic distortion for wide dynamic range applications
• High-speed AC characteristics including high slew rate and gain bandwidth suitable for ultrasound imaging
• Excellent DC precision with low input offset voltage and drift for accurate signal conditioning
• Robust output drive capability supporting high current loads and resistive feedback networks

Instrumentation, Op Amps, Buffer Amps Applications

• Professional audio preamplifiers and mixing consoles
• Infrared (IR) and sonar imaging systems
• Spectrum analyzers and seismic detectors
• Ultrasound preamplifiers
• Buffering inputs for Sigma-Delta ADCs or outputs for high-resolution DACs

Instrumentation, Op Amps, Buffer Amps Procurement Notes

Verify the specific suffix against official Analog Devices documentation to confirm pinout compatibility and thermal specifications. Ensure that the SOIC-8 package dimensions align with your PCB footprint requirements. Confirm that the operating temperature range meets your environmental constraints. Cross-reference the manufacturer part number with authorized distributors to validate authenticity and traceability before finalizing procurement orders.

Instrumentation, Op Amps, Buffer Amps Selection Notes

Select this component when designing circuits requiring exceptional signal fidelity in low-level signal paths. It is particularly suited for applications involving low source impedances, such as moving-coil microphones or MC phono cartridges. Consider its high slew rate and bandwidth for frequency-sensitive tasks like ultrasound generation. Evaluate power supply stability, as the device performs optimally within the specified ±5 V to ±15 V range while maintaining low distortion characteristics.

Instrumentation, Op Amps, Buffer Amps Part Context

The AD797 series represents a class of high-performance operational amplifiers designed for demanding analog signal processing tasks. The BR variant specifically denotes the surface-mount SOIC-8 packaging option, facilitating automated assembly in compact electronic designs. This family is engineered to bridge the gap between general-purpose amplifiers and specialized instrumentation devices, offering a balance of speed, noise performance, and drive capability for professional audio and scientific measurement equipment.

Instrumentation, Op Amps, Buffer Amps Replacement Considerations

Consult official Analog Devices substitution guides for verified alternatives. Generic op-amps may not replicate the specific noise floor or distortion metrics required for these critical applications.