Overview
The AD8627AR is a single, low-power operational amplifier (op amp) produced by Analog Devices Inc. This device is part of the AD862x series, known for its high precision and low noise characteristics. The AD8627AR is designed to operate in single-supply systems and can swing nearly rail-to-rail at both the input and output, making it suitable for buffering CMOS DACs, ASICs, and other wide output swing devices. It is fully specified over the industrial temperature range of −40°C to +85°C.
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 |
Key Features
- Rail-to-Rail Operation: The AD8627AR can swing nearly rail-to-rail at both the input and output, making it ideal for single-supply systems.
- Low Offset Voltage: With a typical offset voltage of 0.5 mV and a maximum of 1.2 mV over the industrial temperature range, this op amp is suitable for precision applications.
- Low Input Bias Current: The input bias current is typically 1 pA, which is beneficial for high-impedance sources.
- High Common-Mode Rejection Ratio (CMRR): A CMRR of 66 dB to 87 dB ensures good rejection of common-mode signals.
- Low Power Consumption: The supply current is typically 785 µA per amplifier, making it energy-efficient.
- Wide Bandwidth and Slew Rate: The device has a 5 MHz bandwidth and a slew rate of 5 V/µs, suitable for dynamic applications.
- Industrial Temperature Range: Fully specified over −40°C to +85°C, making it reliable in various environmental conditions.
Applications
- Precision Filters: The AD8627AR's low offset voltage and high CMRR make it ideal for precision filter applications.
- Buffering CMOS DACs and ASICs: Its rail-to-rail operation and low input bias current are beneficial for buffering wide output swing devices.
- Instrumentation and Sensors: Suitable for use in instrumentation and sensor circuits due to its high precision and low noise characteristics.
- Professional Audio Equipment: Can be used in professional audio equipment where high fidelity and low noise are critical.
Q & A
- What is the typical offset voltage of the AD8627AR?
The typical offset voltage of the AD8627AR is 0.5 mV.
- What is the input bias current of the AD8627AR?
The input bias current is typically 1 pA.
- What is the common-mode rejection ratio (CMRR) of the AD8627AR?
The CMRR is 66 dB to 87 dB.
- What is the bandwidth of the AD8627AR?
The bandwidth is 5 MHz.
- What is the slew rate of the AD8627AR?
The slew rate is 5 V/µs.
- What is the operating temperature range of the AD8627AR?
The operating temperature range is −40°C to +85°C.
- What are the typical supply currents for the AD8627AR?
The typical supply current is 785 µA per amplifier.
- What are the output voltage ranges for the AD8627AR?
The output voltage high is typically 4.92 V, and the output voltage low is typically 0.075 V.
- What are the package options for the AD8627AR?
The AD8627AR is available in 5-lead SC70 and 8-lead SOIC surface-mount packages.
- What are some common applications of the AD8627AR?
Common applications include precision filters, buffering CMOS DACs and ASICs, instrumentation, sensors, and professional audio equipment.
