Overview
The AD8627AKSZ-R2 is a precision JFET input operational amplifier produced by Analog Devices Inc. This device is part of the AD862x series, known for its true single-supply operation, low power consumption, and rail-to-rail output. It is designed to offer high precision and stability, making it suitable for a variety of applications that require low noise and high accuracy.
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 | 800 | 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 | ||
| Current Noise Density | in | f = 1 kHz | 0.4 | fA/√Hz |
Key Features
- Rail-to-Rail Input and Output: The AD8627AKSZ-R2 can swing nearly rail-to-rail at the input and rail-to-rail at the output, making it ideal for buffering CMOS DACs, ASICs, and other wide output swing devices in single-supply systems.
- Low Power Consumption: The device operates with a supply current of less than 630 μA per amplifier.
- High Precision: It features low offset voltage (typically 0.5 mV), low input bias current (typically 1 pA), and high common-mode rejection ratio (typically 87 dB).
- Stability with Capacitive Loads: The outputs remain stable with capacitive loads of over 500 pF.
- Wide Temperature Range: Fully specified over the industrial temperature range (−40°C to +85°C).
- Low Noise: Low voltage noise density (17.5 nV/√Hz at 1 kHz) and low current noise density (0.4 fA/√Hz at 1 kHz).
Applications
- Photodiode Transimpedance Amplification: Ideal for converting current signals from photodiodes into voltage signals.
- ATE Reference Level Drivers: Suitable for driving reference levels in automated test equipment.
- Battery Management: Used in both line-powered and portable instrumentation for battery management systems.
- Remote Sensor Signal Conditioning: Including automotive sensors, due to its stability and precision.
- Precision Filters: The 5 MHz bandwidth and low offset make it ideal for precision filter applications.
Q & A
- What is the typical offset voltage of the AD8627AKSZ-R2?
The typical offset voltage is 0.5 mV. - What is the input bias current of the AD8627AKSZ-R2?
The typical input bias current is 1 pA. - What is the common-mode rejection ratio (CMRR) of the AD8627AKSZ-R2?
The typical CMRR is 87 dB. - What is the slew rate of the AD8627AKSZ-R2?
The slew rate is 5 V/μs. - What is the gain bandwidth product (GBP) of the AD8627AKSZ-R2?
The GBP is 5 MHz. - What is the phase margin of the AD8627AKSZ-R2?
The phase margin is 60 degrees. - What is the typical supply current per amplifier for the AD8627AKSZ-R2?
The typical supply current per amplifier is 785 μA. - What is the output voltage range of the AD8627AKSZ-R2?
The output voltage range is nearly rail-to-rail, with VOH typically 4.92 V and VOL typically 0.075 V at IL = 2 mA. - What are the typical noise characteristics of the AD8627AKSZ-R2?
The device has a voltage noise density of 17.5 nV/√Hz and a current noise density of 0.4 fA/√Hz at 1 kHz. - In what temperature range is the AD8627AKSZ-R2 fully specified?
The device is fully specified over the industrial temperature range (−40°C to +85°C).
