Analog Devices Inc. AD797ARZ-REEL7
| Parameters | |
|---|---|
| Mfr | Analog Devices Inc. |
| Mounting Type | Surface Mount |
| Technology | Bipolar |
| Type | General-Purpose Operational Amplifier |
| Number of Channels | 1 |
| Slew Rate | 20 V/µs |
| Output Current per Channel | 50 mA |
| Input Offset Voltage (Vos) | 25 µV (typ), 80 µV (max) |
| Operating Temperature Range | -40°C to +85°C |
| Applications | Microphone Preamps, Audio Processing, Instrumentation |
| Power Supply Rejection Ratio (PSRR) | 114 dB (min) |
| Package | 8-SOIC |
AD797ARZ-REEL7 low-noise op-amp, Low distortion audio amplifier IC Chip Detailed Product Description
The AD797ARZ-REEL7 is a high-performance, low-noise operational amplifier (op-amp) from Analog Devices, designed for precision signal conditioning in demanding applications. It features an ultra-low input voltage noise density of 0.9 nV/√Hz at 1 kHz, making it ideal for high-gain amplification in sensitive instrumentation, medical imaging, and audio processing systems. With a wide supply voltage range of ±5V to ±15V, the AD797ARZ-REEL7 delivers exceptional DC precision, including a low input offset voltage of 80 µV (max) and a high open-loop gain of 126 dB, ensuring accurate signal amplification with minimal distortion. The device is housed in an 8-lead SOIC package, providing a compact footprint for space-constrained PCB designs while maintaining excellent thermal performance.
One of the standout features of the AD797ARZ-REEL7 is its fast settling time of 550 ns to 0.01%, making it suitable for high-speed data acquisition systems and active filter designs. The op-amp also exhibits a high slew rate of 20 V/µs, enabling it to handle transient signals with minimal phase delay. Additionally, its low distortion (THD: -120 dB at 20 kHz) makes it a preferred choice for high-fidelity audio applications, including professional recording equipment and precision DAC buffers. The device is designed to operate over an extended industrial temperature range (-40°C to +85°C), ensuring reliable performance in harsh environments.
The AD797ARZ-REEL7 incorporates advanced bipolar input stage technology, providing high input impedance and low bias current, which is critical for interfacing with high-impedance sensors and transducers. Its current noise of 2 pA/√Hz further enhances performance in photodiode amplifiers and other low-current measurement circuits. The op-amp is also optimized for stability in capacitive load conditions, reducing the need for external compensation components. With its combination of low noise, high speed, and precision, the AD797ARZ-REEL7 is widely used in medical ultrasound, spectrum analyzers, and high-end test equipment where signal integrity is paramount.
Alternative Models:
● AD797BRZ – Higher precision version with tighter offset voltage (50 µV max) and lower noise, suited for critical measurement systems.
● AD8599ARZ – Ultra-low noise (1.1 nV/√Hz) op-amp with rail-to-rail output, ideal for portable audio and sensor interfaces.
● OP27G – Low-noise precision op-amp with similar noise performance but lower bandwidth, suitable for DC-coupled applications.
● LT1028 – Ultra-low noise (0.85 nV/√Hz) and high-speed alternative for specialized low-noise amplification.
