Overview
The AD797BR-REEL7, produced by Analog Devices Inc., is a high-performance, ultralow noise, and ultralow distortion operational amplifier. This device is particularly suited for applications requiring high dynamic range and low noise, such as preamplifiers in microphones, mixing consoles, and various imaging systems. The AD797BR-REEL7 features a single ultrahigh gain stage, which ensures both DC and dynamic precision, making it ideal for low-frequency ultrasound, infrared (IR), and sonar imaging applications.
Key Specifications
| Parameter | Min | Typ | Max | Unit |
|---|---|---|---|---|
| Supply Voltage | ±5 | ±18 | V | |
| Input Offset Voltage | 25 | 80 | 125 | μV |
| Input Bias Current | 0.25 | 1.5 | 3.0 | μA |
| Input Offset Current | 100 | 400 | 600 | nA |
| Open-Loop Gain | 1 | 20 | V/μV | |
| Slew Rate | 20 | V/μs | ||
| Gain Bandwidth Product | 110 | MHz | ||
| Voltage Noise Density | 0.9 | nV/√Hz | ||
| Total Harmonic Distortion | -120 | dB | ||
| Operating Temperature Range | -40 | 85 | °C |
Key Features
- Low Noise and Distortion: The AD797BR-REEL7 boasts a low voltage noise density of 0.9 nV/√Hz and a total harmonic distortion of -120 dB, making it ideal for high-fidelity audio and imaging applications.
- High Slew Rate and Gain Bandwidth: With a slew rate of 20 V/μs and a gain bandwidth product of 110 MHz, this amplifier is highly suitable for applications requiring fast and accurate signal processing.
- Single Ultrahigh Gain Stage: The architecture of the AD797BR-REEL7 uses a single ultrahigh gain stage to achieve both DC and dynamic precision, enhancing its performance in various applications.
- Input Protection: The inputs are protected by back-to-back diodes, and internal current-limiting resistors are not incorporated to maintain low noise performance.
- High Dynamic Range: The amplifier is designed to provide a wide dynamic range, making it suitable for preamps in microphones, mixing consoles, and other high-performance audio equipment.
Applications
- Audio Preamps: Ideal for use in microphones and mixing consoles due to its low noise and distortion characteristics.
- Imaging Systems: Suitable for infrared (IR) and sonar imaging applications where high dynamic range is necessary.
- Low-Frequency Ultrasound: The high slew rate and gain bandwidth make it highly suitable for low-frequency ultrasound applications.
- Σ-Δ ADCs and DACs: Excellent 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 typical voltage noise density of the AD797BR-REEL7?
The typical voltage noise density of the AD797BR-REEL7 is 0.9 nV/√Hz.
- What is the slew rate of the AD797BR-REEL7?
The slew rate of the AD797BR-REEL7 is 20 V/μs.
- What is the gain bandwidth product of the AD797BR-REEL7?
The gain bandwidth product of the AD797BR-REEL7 is 110 MHz.
- What is the total harmonic distortion of the AD797BR-REEL7 in audio bandwidths?
The total harmonic distortion of the AD797BR-REEL7 in audio bandwidths is -120 dB.
- What is the operating temperature range of the AD797BR-REEL7?
The operating temperature range of the AD797BR-REEL7 is -40°C to +85°C.
- How is the input protection implemented in the AD797BR-REEL7?
The inputs of the AD797BR-REEL7 are protected by back-to-back diodes, and internal current-limiting resistors are not incorporated to maintain low noise performance.
- What are some common applications of the AD797BR-REEL7?
The AD797BR-REEL7 is commonly used in audio preamps, imaging systems, low-frequency ultrasound applications, and for buffering inputs to Σ-Δ ADCs or outputs of high-resolution DACs.
- What is the maximum supply voltage for the AD797BR-REEL7?
The maximum supply voltage for the AD797BR-REEL7 is ±18 V.
- What is the typical input bias current of the AD797BR-REEL7?
The typical input bias current of the AD797BR-REEL7 is 1.5 μA.
- How does the single ultrahigh gain stage architecture benefit the AD797BR-REEL7?
The single ultrahigh gain stage architecture of the AD797BR-REEL7 ensures both DC and dynamic precision, enhancing its performance in various applications.
