Overview
The AD8620BR-REEL, produced by Analog Devices Inc., is a precision, very low noise, low input bias current operational amplifier. It is part of the AD8610/AD8620 family, which is known for its high performance and stability. These amplifiers are manufactured using the XFCB (eXtra fast complementary bipolar) process, which incorporates dielectrically isolated N-channel JFET technology and thin film resistors. This technology enables the amplifiers to have a fast slew rate, high bandwidth, and low noise characteristics, making them ideal for a variety of high-performance applications.
Key Specifications
| Parameter | Min | Max | Unit | |
|---|---|---|---|---|
| Offset Voltage (AD8620B) | 80 | 150 | 300 | μV |
| Input Bias Current | -10 | 1 | 10 | pA |
| Input Offset Current | -10 | 1 | 10 | pA |
| Input Voltage Range | -2 | +3 | V | |
| Common-Mode Rejection Ratio | 90 | 95 | dB | |
| Output Voltage High | +11.75 | +11.84 | V | |
| Output Voltage Low | -11.84 | -11.75 | V | |
| Output Current | ±45 | mA | ||
| Short-Circuit Current | ±65 | mA | ||
| Supply Current per Amplifier | 3.0 | 3.5 | mA | |
| Slew Rate | 40 | 60 | V/μs | |
| Settling Time to 0.01% Accuracy | <600 | ns |
Key Features
- Very low noise and low input bias current, making it suitable for high-precision applications.
- High slew rate of 50 V/μs and fast settling time of less than 600 ns to 0.01% accuracy.
- Unconditionally stable with capacitive loads over 1000 pF in noninverting unity gain configurations.
- High output drive capability, swinging to within 1.2 V of the supplies even with a 1 kΩ load.
- Manufactured using the XFCB process with dielectrically isolated N-channel JFET technology and thin film resistors for high accuracy and stability.
- Wide operating temperature range from -40°C to +125°C.
Applications
- Electronic instruments and test equipment.
- ATE (Automated Test Equipment) amplification, buffering, and integrator circuits.
- Medical instrumentation, including CAT, MRI, and ultrasound devices.
- Instrumentation quality photodiode amplification.
- Fast precision filters, including PLL filters.
- High-quality audio applications.
Q & A
- What is the typical offset voltage of the AD8620B?
The typical offset voltage of the AD8620B is 150 μV.
- What is the slew rate of the AD8620?
The slew rate of the AD8620 is between 40 V/μs and 60 V/μs.
- What is the input bias current of the AD8620?
The input bias current of the AD8620 is typically around 1 pA.
- What is the common-mode rejection ratio (CMRR) of the AD8620?
The CMRR of the AD8620 is between 90 dB and 95 dB.
- What is the output voltage range of the AD8620?
The output voltage range of the AD8620 is from -11.84 V to +11.84 V with a 1 kΩ load.
- What is the supply current per amplifier for the AD8620?
The supply current per amplifier for the AD8620 is typically around 3.5 mA.
- What are the typical applications of the AD8620?
The AD8620 is typically used in electronic instruments, ATE, medical instrumentation, photodiode amplification, precision filters, and high-quality audio applications.
- What is the operating temperature range of the AD8620?
The operating temperature range of the AD8620 is from -40°C to +125°C.
- How stable is the AD8620 with capacitive loads?
The AD8620 is unconditionally stable with capacitive loads over 1000 pF in noninverting unity gain configurations.
- What is the settling time of the AD8620 to 0.01% accuracy?
The settling time of the AD8620 to 0.01% accuracy is less than 600 ns.
