Overview
The AD8626AR-REEL7, produced by Analog Devices Inc., is a precision JFET input operational amplifier. This component is part of the AD862x series, known for its true single-supply operation, low power consumption, and rail-to-rail output capabilities. The AD8626 is designed to offer high precision and stability, making it suitable for a variety of applications that require accurate signal amplification and conditioning.
Key Specifications
| Parameter | Symbol | Conditions | Min | Typ | Max | Unit |
|---|---|---|---|---|---|---|
| Offset Voltage | VOS | –40°C < TA < +85°C | 0.05 | 0.5 | 1.2 | mV |
| Input Bias Current | IB | –40°C < TA < +85°C | 0.25 | 1 | 60 | pA |
| Input Offset Current | IOS | –40°C < TA < +85°C | 0.5 | 25 | pA | |
| Input Voltage Range | 0 | 3 | V | |||
| Common-Mode Rejection Ratio | CMRR | VCM = 0 V to 2.5 V | 66 | 87 | dB | |
| Large Signal Voltage Gain | AVO | RL = 10 kΩ, VO = 0.5 V to 4.5 V | 100 | 230 | V/mV | |
| Output Voltage High | VOH | IL = 2 mA, –40°C < TA < +85°C | 4.92 | 4.90 | V | |
| Output Voltage Low | VOL | IL = 2 mA, –40°C < TA < +85°C | 0.075 | 0.08 | V | |
| Output Current | IOUT | ±10 | mA | |||
| Supply Current/Amplifier | ISY | –40°C < TA < +85°C | 630 | 785 | µA | |
| Slew Rate | SR | 5 | V/µs | |||
| Gain Bandwidth Product | GBP | 5 | MHz | |||
| Phase Margin | ØM | 60 | Degrees | |||
| Voltage Noise Density | en | f = 1 kHz | 17.5 | nV/√Hz |
Key Features
- Precision JFET Input: Offers low input bias current and high input impedance.
- True Single-Supply Operation: Can operate with a single supply voltage, making it versatile for various applications.
- Rail-to-Rail Output: The output voltage can swing nearly to the supply rails, enhancing the dynamic range of the amplifier.
- Low Power Consumption: Consumes less than 630 µA per amplifier, suitable for power-sensitive designs.
- High Stability with Capacitive Loads: Stable operation with capacitive loads of over 500 pF.
- Low Noise Performance: Features low voltage noise density and current noise density, making it suitable for noise-sensitive applications.
Applications
- Photodiode Transimpedance Amplification: Ideal for converting current signals from photodiodes into voltage signals.
- ATE Reference Level Drivers: Used in automated test equipment for driving reference levels.
- Battery Management: Suitable for both line-powered and portable instrumentation in battery management systems.
- Remote Sensor Signal Conditioning: Including automotive sensors, where precise signal conditioning is required.
- Buffering CMOS DACs and ASICs: Can buffer outputs from CMOS DACs and ASICs due to its rail-to-rail input and output capabilities.
Q & A
- What is the typical input bias current of the AD8626?
The typical input bias current is 1 pA.
- What is the maximum supply voltage for the AD8626?
The maximum supply voltage is 27 V.
- What is the common-mode rejection ratio (CMRR) of the AD8626?
The CMRR is typically 87 dB.
- What is the slew rate of the AD8626?
The slew rate is 5 V/µs.
- What is the gain bandwidth product (GBP) of the AD8626?
The GBP is 5 MHz.
- Can the AD8626 operate with capacitive loads?
Yes, it can operate stably with capacitive loads of over 500 pF.
- What are some common applications of the AD8626?
Common applications include photodiode transimpedance amplification, ATE reference level drivers, battery management, and remote sensor signal conditioning.
- What is the typical output current of the AD8626?
The typical output current is ±10 mA.
- How much power does the AD8626 typically consume?
The typical supply current per amplifier is less than 785 µA.
- Is the AD8626 suitable for noise-sensitive applications?
Yes, it features low voltage noise density and current noise density, making it suitable for noise-sensitive applications.
