Overview
The AD797BR-REEL is a general-purpose operational amplifier produced by Analog Devices Inc. This component is designed for various applications, including instrumentation and signal processing. Despite being considered obsolete, it remains a valuable component due to its specific features. The AD797BR-REEL offers high gain bandwidth, low noise, and low distortion, making it suitable for amplifying low-level signals in modern electronics.
Key Specifications
| Parameter | Min | Typ | Max | Unit |
|---|---|---|---|---|
| Supply Voltage | ±5 | ±18 | V | |
| Input Offset Voltage | 10 | 25 | 40 | μV |
| Input Bias Current | 0.25 | 1.5 | 0.9 | μA |
| Common Mode Rejection Ratio (CMRR) | 120 | dB | ||
| Slew Rate | 20 | V/μs | ||
| Gain Bandwidth Product | 110 | MHz | ||
| Operating Temperature Range | -40 | 85 | °C | |
| Quiescent Current | 8.2 | 10.5 | mA | |
| Differential Input Capacitance | 20 | pF |
Key Features
- Low Noise and Distortion: The AD797BR-REEL features very low noise of 0.9 nV/√Hz and low total harmonic distortion of −120 dB in audio bandwidths, making it ideal for preamplifier applications.
- High Gain Bandwidth Product: With a gain bandwidth product of 110 MHz and a slew rate of 20 V/μs, this amplifier is suitable for high-speed applications.
- Wide Dynamic Range: The amplifier offers a wide dynamic range, making it suitable for applications such as microphones, mixing consoles, infrared (IR) and sonar imaging.
- High Stability and Minimal Distortion: The low input bias current of 250 nA and input offset voltage of 10 μV ensure high stability and minimal distortion.
- Broad Operating Temperature Range: The AD797BR-REEL operates over a wide temperature range of -40°C to 85°C, making it suitable for various environmental conditions.
Applications
- Instrumentation and Signal Processing: The AD797BR-REEL is designed for various instrumentation and signal processing applications where high accuracy and low noise are critical.
- Preamplifiers in Audio Equipment: Its low noise and distortion make it ideal for use as preamplifiers in microphones and mixing consoles.
- Imaging Applications: The amplifier is useful in infrared (IR) and sonar imaging applications where a wide dynamic range is necessary.
- Buffering for Σ-Δ ADCs and DACs: It is ideal for buffering the inputs to Σ-Δ ADCs or the outputs of high-resolution DACs due to its low distortion and fast settling time).
Q & A
- What is the gain bandwidth product of the AD797BR-REEL?
The gain bandwidth product of the AD797BR-REEL is 110 MHz).
- What is the slew rate of the AD797BR-REEL?
The slew rate of the AD797BR-REEL is 20 V/μs).
- What is the input offset voltage of the AD797BR-REEL?
The input offset voltage of the AD797BR-REEL is typically 10 μV to 40 μV).
- What is the common mode rejection ratio (CMRR) of the AD797BR-REEL?
The CMRR of the AD797BR-REEL is 120 dB).
- What is the operating temperature range of the AD797BR-REEL?
The operating temperature range of the AD797BR-REEL is -40°C to 85°C).
- What is the quiescent current of the AD797BR-REEL?
The quiescent current of the AD797BR-REEL is typically 8.2 mA).
- What are the key applications of the AD797BR-REEL?
The AD797BR-REEL is used in instrumentation, signal processing, preamplifiers in audio equipment, IR and sonar imaging, and buffering for Σ-Δ ADCs and DACs).
- Why is the AD797BR-REEL considered obsolete?
Although the AD797BR-REEL is considered obsolete, it remains valuable for specific applications due to its unique features and performance characteristics).
- What is the differential input capacitance of the AD797BR-REEL?
The differential input capacitance of the AD797BR-REEL is 20 pF, which includes 1.5 pF package capacitance and 18.5 pF from the input differential pair).
- How does the AD797BR-REEL handle high-frequency applications?
The AD797BR-REEL handles high-frequency applications effectively due to its high gain bandwidth product and fast slew rate, making it suitable for applications beyond audio frequencies).
