Overview
The AD8620AR is a precision, very low noise, low input bias current, and wide bandwidth JFET operational amplifier manufactured by Analog Devices Inc. This dual operational amplifier is designed to offer high precision and stability, making it suitable for a variety of high-performance applications. The AD8620AR features ultralow offset voltage and drift, very low input bias current, and high output drive capability, which are critical for applications requiring high accuracy and reliability.
Key Specifications
| Parameter | Value | Conditions |
|---|---|---|
| Offset Voltage (VOS) | 85 µV to 350 µV | -40°C to 125°C |
| Input Bias Current (IB) | -10 pA to 10 pA | -40°C to 125°C |
| Input Offset Current (IOS) | -10 pA to 10 pA | -40°C to 125°C |
| Common-Mode Rejection Ratio (CMRR) | 90 dB to 95 dB | VCM = -1.5 V to +2.5 V |
| Slew Rate (SR) | 40 V/µs to 60 V/µs | RL = 2 kΩ |
| Gain Bandwidth Product (GBP) | 25 MHz | |
| Supply Voltage | ±5 V to ±13 V | |
| Supply Current per Amplifier (ISY) | 3.0 mA to 4.0 mA | VO = 0 V, -40°C to 125°C |
| Output Current (IOUT) | ±45 mA | VOUT > 10 V |
| Operating Temperature | -40°C to 125°C | |
| Package | 8-SOIC (0.154", 3.90mm Width) |
Key Features
- Ultralow offset voltage and drift, ensuring high precision and stability.
- Very low input bias current, reducing errors in high-impedance source applications.
- High output drive capability, allowing the amplifier to drive high-performance ADC inputs and buffer DAC converter outputs.
- Wide bandwidth of 25 MHz, suitable for high-frequency applications.
- High slew rate of up to 60 V/µs, enabling fast settling times.
- Unconditionally stable with capacitive loads, making it versatile for various configurations.
- High input impedance and low noise, ideal for instrumentation and medical instrumentation applications.
Applications
- Electronic instruments and automated test equipment (ATE) amplification, buffering, and integrator circuits.
- CAT/MRI/ultrasound medical instrumentation.
- Instrumentation quality photodiode amplification.
- Fast precision filters, including PLL filters.
- High-quality audio applications.
Q & A
- What is the typical offset voltage of the AD8620AR?
The typical offset voltage of the AD8620AR ranges from 85 µV to 350 µV over the temperature range of -40°C to 125°C.
- What is the input bias current of the AD8620AR?
The input bias current is typically in the range of -10 pA to 10 pA over the temperature range of -40°C to 125°C.
- What is the slew rate of the AD8620AR?
The slew rate of the AD8620AR is up to 60 V/µs.
- What is the gain bandwidth product (GBP) of the AD8620AR?
The gain bandwidth product (GBP) of the AD8620AR is 25 MHz.
- What are the typical supply voltage and current requirements for the AD8620AR?
The AD8620AR operates with a supply voltage of ±5 V to ±13 V and has a supply current per amplifier of 3.0 mA to 4.0 mA.
- What is the operating temperature range of the AD8620AR?
The operating temperature range of the AD8620AR is -40°C to 125°C.
- What package type is the AD8620AR available in?
The AD8620AR is available in an 8-SOIC package.
- Is the AD8620AR suitable for high-frequency applications?
Yes, the AD8620AR is suitable for high-frequency applications due to its wide bandwidth of 25 MHz and high slew rate.
- What are some common applications of the AD8620AR?
The AD8620AR is commonly used in electronic instruments, ATE amplification, medical instrumentation, photodiode amplification, precision filters, and high-quality audio applications.
- Is the AD8620AR stable with capacitive loads?
Yes, the AD8620AR is unconditionally stable with capacitive loads, even with loads well in excess of 1 nF.
