Overview
The AD8625ARUZ is a precision, low-power, single-supply JFET input operational amplifier manufactured by Analog Devices Inc. This amplifier is known for its true single-supply operation, low power consumption, and rail-to-rail output capabilities. It is designed to operate from a single 5 V supply, making it suitable for a variety of applications where low power and high precision are required.
Key Specifications
| Parameter | Symbol | Conditions | Min | Typ | Max | Unit |
|---|---|---|---|---|---|---|
| Offset Voltage | VOS | –40°C < TA < +85°C | 0.05 mV | 0.5 mV | 1.2 mV | mV |
| Input Bias Current | IB | –40°C < TA < +85°C | 0.25 pA | 1 pA | 60 pA | pA |
| Input Offset Current | IOS | –40°C < TA < +85°C | 0.5 pA | 25 pA | pA | |
| Input Voltage Range | 0 V | 3 V | V | |||
| Common-Mode Rejection Ratio | CMRR | VCM = 0 V to 2.5 V | 66 dB | 87 dB | dB | |
| Large Signal Voltage Gain | AVO | RL = 10 kΩ, VO = 0.5 V to 4.5 V | 100 V/mV | 230 V/mV | V/mV | |
| Offset Voltage Drift | ∆VOS/∆T | –40°C < TA < +85°C | 2.5 µV/°C | µV/°C | ||
| Output Voltage High | VOH | IL = 2 mA, –40°C < TA < +85°C | 4.92 V | 4.90 V | V | |
| Output Voltage Low | VOL | IL = 2 mA, –40°C < TA < +85°C | 0.075 V | 0.08 V | V | |
| Output Current | IOUT | ±10 mA | mA | |||
| Supply Current/Amplifier | ISY | –40°C < TA < +85°C | 630 µA | 785 µA | 800 µA | µA |
| Slew Rate | SR | 5 V/µs | V/µs | |||
| Gain Bandwidth Product | GBP | 5 MHz | MHz | |||
| Phase Margin | ØM | 60 Degrees | Degrees | |||
| Voltage Noise | en | 0.1 Hz to 10 Hz | 1.9 µV p-p | µV p-p | ||
| Voltage Noise Density | en | f = 1 kHz | 17.5 nV/√Hz | nV/√Hz | ||
| Current Noise Density | in | f = 1 kHz | 0.4 fA/√Hz | fA/√Hz |
Key Features
- Rail-to-Rail Input and Output: The AD8625ARUZ can swing nearly rail-to-rail at both the input and output, making it suitable for applications requiring full range signal handling.
- Low Power Consumption: With a supply current of less than 630 µA per amplifier, it is ideal for battery-powered and portable devices.
- High Precision: Features low offset voltage (0.05 mV to 1.2 mV), low input bias current (0.25 pA to 60 pA), and low offset voltage drift (2.5 µV/°C).
- Stable with Capacitive Loads: The outputs remain stable with capacitive loads of over 500 pF.
- Wide Operating Temperature Range: Operates over a temperature range of –40°C to +85°C.
Applications
- Photodiode Transimpedance Amplification: Suitable for amplifying signals from photodiodes.
- ATE Reference Level Drivers: Used in automated test equipment for driving reference levels.
- Battery Management: Ideal for battery-powered systems due to its low power consumption.
- Instrumentation: Used in both line-powered and portable instrumentation.
- Remote Sensor Signal Conditioning: Including automotive sensors, due to its stability and precision.
- Buffering CMOS DACs and ASICs: Can buffer outputs from CMOS DACs and ASICs effectively.
Q & A
- What is the typical supply current of the AD8625ARUZ?
The typical supply current is 785 µA per amplifier.
- What is the input voltage range of the AD8625ARUZ?
The input voltage range is from 0 V to 3 V.
- What is the slew rate of the AD8625ARUZ?
The slew rate is 5 V/µs.
- Can the AD8625ARUZ handle capacitive loads?
Yes, the outputs remain stable with capacitive loads of over 500 pF.
- What are some common applications of the AD8625ARUZ?
Common applications include photodiode transimpedance amplification, ATE reference level drivers, battery management, and remote sensor signal conditioning.
- What is the operating temperature range of the AD8625ARUZ?
The operating temperature range is from –40°C to +85°C.
- Does the AD8625ARUZ support rail-to-rail input and output?
Yes, it supports nearly rail-to-rail input and rail-to-rail output.
- What is the typical offset voltage of the AD8625ARUZ?
The typical offset voltage is 0.5 mV.
- How much output current can the AD8625ARUZ provide?
The AD8625ARUZ can provide an output current of ±10 mA.
- What is the gain bandwidth product of the AD8625ARUZ?
The gain bandwidth product is 5 MHz.
