Overview
The AD8642ARZ-REEL is a dual low power, precision JFET input operational amplifier manufactured by Analog Devices Inc. This device is characterized by its extremely low input bias current and rail-to-rail output, making it suitable for a wide range of applications. It is designed to operate in single-supply and dual-supply configurations, with a supply voltage range of 5V to 26V for single-supply and ±2.5V to ±13V for dual-supply. The AD8642ARZ-REEL is particularly useful in applications requiring high precision and low power consumption, such as buffering CMOS DACs, ASICs, and other wide output swing devices in single-supply systems.
Key Specifications
| Parameter | Typical Value | Units |
|---|---|---|
| Supply Current per Amplifier | 195 | μA |
| Input Bias Current | 0.25 | pA |
| Offset Voltage | 50 | μV |
| Single-Supply Operation | 5 to 26 | V |
| Dual-Supply Operation | ±2.5 to ±13 | V |
| Bandwidth | 3.5 | MHz |
| Slew Rate | 3 | V/μs |
| Voltage Noise | 4 | μV p-p |
| Common-Mode Rejection Ratio | 93 | dB |
| Operating Temperature | -40 to +125 | °C |
| Package Style | 8-lead SOIC-N |
Key Features
- Low power consumption with a typical supply current of 195μA per amplifier.
- Extremely low input bias current of 0.25pA.
- Low offset voltage of 50μV.
- Rail-to-rail output, unity-gain stable, with no phase reversal.
- High common-mode rejection ratio of 93dB.
- Wide operating temperature range from -40°C to +125°C.
- Internal amplifier with low input noise and high-impedance input impedance.
Applications
- Buffering CMOS DACs, ASICs, and other wide output swing devices in single-supply systems.
- Photodiode amplifiers.
- Precision current sensing.
- Medical instrumentation.
- Industrial controls and process control.
- Test and measurement equipment.
- Portable audio and line/battery-powered instruments.
- Battery management systems.
Q & A
- What is the typical supply current per amplifier for the AD8642ARZ-REEL?
The typical supply current per amplifier is 195μA. - What is the input bias current of the AD8642ARZ-REEL?
The input bias current is 0.25pA. - What is the offset voltage of the AD8642ARZ-REEL?
The offset voltage is 50μV. - What are the supply voltage ranges for the AD8642ARZ-REEL?
The device operates in single-supply mode from 5V to 26V and in dual-supply mode from ±2.5V to ±13V. - What is the bandwidth of the AD8642ARZ-REEL?
The bandwidth is 3.5MHz. - What is the slew rate of the AD8642ARZ-REEL?
The slew rate is 3V/μs. - What is the common-mode rejection ratio of the AD8642ARZ-REEL?
The common-mode rejection ratio is 93dB. - What is the operating temperature range of the AD8642ARZ-REEL?
The operating temperature range is from -40°C to +125°C. - In what package style is the AD8642ARZ-REEL available?
The device is available in an 8-lead SOIC-N package. - What are some common applications of the AD8642ARZ-REEL?
Common applications include buffering CMOS DACs, photodiode amplifiers, precision current sensing, medical instrumentation, and industrial controls.
