Overview
The OP291GS from Analog Devices Inc. is a dual micropower, single-supply operational amplifier (op-amp) known for its rail-to-rail input and output capabilities. This device is part of the OP191/OP291/OP491 family, which features low power consumption, wide bandwidth, and high accuracy. The OP291GS is particularly suited for applications requiring low noise, high precision, and a wide operating temperature range.
Key Specifications
| Parameter | Symbol | Conditions | Min | Typ | Max | Unit |
|---|---|---|---|---|---|---|
| Offset Voltage | VOS | −40°C ≤ TA ≤ +125°C | 80 | 700 | 1.25 mV | mV |
| Input Bias Current | IB | −40°C ≤ TA ≤ +125°C | 30 | 65 | 95 nA | nA |
| Input Offset Current | IOS | −40°C ≤ TA ≤ +125°C | 0.1 | 11 | 22 nA | nA |
| Supply Voltage | VS | 2.7 | 12 V | V | ||
| Output Current per Channel | 16 | mA | mA | |||
| Operating Temperature Range | TA | −40°C | +125°C | °C | ||
| Bandwidth | 3 | MHz | MHz | |||
| Slew Rate | SR | RL = 10 kΩ | 0.5 | V/μs | V/μs | |
| Package | 8-SOIC |
Key Features
- Single-Supply Operation: The OP291GS operates from a single supply voltage ranging from 2.7 V to 12 V, making it versatile for various applications.
- Rail-to-Rail Input/Output: This op-amp features rail-to-rail input and output capabilities, ensuring that the input and output signals can swing close to the supply rails.
- Low Power Consumption: With a supply current of 260 μA to 420 μA per amplifier, it is suitable for battery-powered and power-sensitive applications.
- Wide Bandwidth: The device has a bandwidth of 3 MHz and a slew rate of 0.5 V/μs, making it suitable for high-frequency applications.
- Low Noise: It exhibits low voltage noise density of 30 nV/√Hz at 1 kHz and low current noise density of 0.8 pA/√Hz, ensuring high signal integrity.
- High Precision: The OP291GS has a low offset voltage of 700 μV and low input bias current, ensuring high accuracy in signal amplification.
Applications
- Instrumentation: Due to its high precision and low noise, the OP291GS is ideal for instrumentation applications such as data acquisition systems and medical devices.
- Industrial Control Systems: It is suitable for use in industrial control systems where reliability and accuracy are crucial.
- Automotive Systems: The wide operating temperature range makes it suitable for automotive applications.
- Battery-Powered Devices: Its low power consumption makes it a good choice for battery-powered devices such as portable medical equipment and handheld instruments.
Q & A
- What is the operating temperature range of the OP291GS?
The operating temperature range of the OP291GS is from −40°C to +125°C.
- What is the supply voltage range for the OP291GS?
The OP291GS operates from a single supply voltage ranging from 2.7 V to 12 V.
- What is the bandwidth of the OP291GS?
The bandwidth of the OP291GS is 3 MHz.
- What is the slew rate of the OP291GS?
The slew rate of the OP291GS is 0.5 V/μs.
- What is the input bias current of the OP291GS?
The input bias current of the OP291GS is typically 65 nA, with a maximum of 95 nA over the operating temperature range.
- What is the output current per channel of the OP291GS?
The output current per channel of the OP291GS is 16 mA.
- What package types are available for the OP291GS?
The OP291GS is available in an 8-SOIC package.
- Is the OP291GS suitable for high-frequency applications?
Yes, the OP291GS is suitable for high-frequency applications due to its 3 MHz bandwidth and 0.5 V/μs slew rate.
- What are some common applications of the OP291GS?
The OP291GS is commonly used in instrumentation, industrial control systems, automotive systems, and battery-powered devices.
- Does the OP291GS feature rail-to-rail input and output?
Yes, the OP291GS features rail-to-rail input and output capabilities.
