AD797BR – Low Noise, Low Distortion Operational Amplifier – Analog Devices

The AD797BR from Analog Devices is an ultra-low noise precision operational amplifier engineered for critical signal conditioning applications. Delivering exceptional accuracy and stability, this IC is ideal for high-resolution instrumentation, medical equipment, and audio systems where minimal distortion is paramount. PCX exclusively supplies genuine Analog Devices components with guaranteed traceability and same-day shipping.

Key Features

• Ultra-Low Voltage Noise: 0.9 nV/√Hz at 1 kHz
• Extremely Low Distortion: -120 dB THD @ 20 kHz
• High Gain Bandwidth: 110 MHz
• Fast Slew Rate: 20 V/μs
• Wide Supply Voltage Range: ±5V to ±15V
• Low Input Offset Voltage: 80 μV max

Technical Details

Housed in an 8-pin SOIC package, the AD797BR operates across the industrial temperature range (-40°C to +85°C). It features laser-trimmed input circuitry for precision offset and drift performance, coupled with a unity-gain stable design. The device supports direct interfacing with high-impedance sensors and delivers 126 dB CMRR for exceptional common-mode rejection.

Typical Applications

• Medical instrumentation (ECG, ultrasound)
• High-end audio preamplifiers and mixers
• Precision data acquisition systems
• Test & measurement equipment
• Photodiode amplification circuits

About Analog Devices

Analog Devices (ADI) is a global leader in high-performance semiconductor solutions, renowned for pushing the boundaries of signal processing technology. With over 50 years of innovation, ADI sets industry standards for precision analog, mixed-signal, and power management ICs across aerospace, healthcare, and industrial markets.

ADI’s rigorous quality control and automotive-grade manufacturing processes ensure unmatched component reliability. Their commitment to cutting-edge R&D makes them the preferred choice for mission-critical designs where accuracy and longevity are non-negotiable.

About Operational Amplifiers

Operational amplifiers (op-amps) are fundamental building blocks in analog electronic design, amplifying voltage differences between input terminals with high gain. Precision op-amps like the AD797BR enable accurate signal amplification, filtering, and conditioning in noise-sensitive environments where standard amplifiers fail.

Selecting the right op-amp significantly impacts system performance metrics like signal-to-noise ratio (SNR) and total harmonic distortion (THD). High-specification amplifiers are essential in medical diagnostics, professional audio, and scientific instrumentation where signal integrity directly correlates to measurement validity.

Packaging Options

Available in industry-standard packaging: Tube (50 units) or Tape & Reel (2,500 units). Contact PCX for reel quantity pricing and custom kitting services.

FAQs

Q: What distinguishes the AD797BR from general-purpose op-amps?
A: Its 0.9nV/√Hz noise density and -120dB distortion outperform standard op-amps by 10-20x, making it suitable for nanovolt-level signal amplification.

Q: Is this device unity-gain stable?
A: Yes, the AD797BR remains stable at gains ≥1 without external compensation.

Q: Can I use this op-amp in single-supply configurations?
A: While optimized for dual supplies (±5V to ±15V), it supports single-supply operation down to +10V with proper biasing.

Q: What thermal management is required?
A: The SOIC-8 package dissipates 100mW typically. For high-temperature environments, follow layout guidelines in the datasheet.

Q: Are evaluation boards available for this IC?
A: PCX provides access to ADI’s EVAL-OPAMP-1CPZ evaluation board – inquire for availability.

Q: Does PCX provide lifecycle status updates?
A: Yes, we proactively notify customers about ADI’s product change notifications (PCNs) and obsolescence alerts.

Image shown is representational only. Refer to datasheet for exact dimensions.

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