Overview
The OP491GP is a quad micropower, single-supply, rail-to-rail input/output operational amplifier produced by Analog Devices Inc. It is fabricated using Analog Devices' CBCMOS process, which enables a unique input stage that allows the input voltage to safely extend 10V beyond either supply without any phase inversion or latch-up. This amplifier is designed for low power consumption and high performance, making it suitable for a wide range of applications.
Key Specifications
| Parameter | Symbol | Conditions | Typical Value | Unit |
|---|---|---|---|---|
| Supply Voltage | VS | - | 2.7V to 12V | V |
| Gain Bandwidth | - | VS = 3V, VCM = 0.1V, VO = 1.4V, TA = 25°C | 3 MHz | Hz |
| Slew Rate | - | VS = 3V, VCM = 0.1V, VO = 1.4V, TA = 25°C | 0.5 V/μs | V/μs |
| Offset Voltage | VOS | -40°C ≤ TA ≤ +125°C | 80 μV to 700 μV | μV |
| Input Bias Current | IB | -40°C ≤ TA ≤ +125°C | 30 nA to 65 nA | nA |
| Operating Temperature Range | TA | - | -40°C to +125°C | °C |
| Package Style | - | - | 14-lead PDIP, 14-lead SOIC, 14-lead TSSOP | - |
| Voltage Noise | en | 0.1 Hz to 10 Hz | 2 μV p-p | μV p-p |
Key Features
- Single-Supply Operation: The OP491GP operates from a single supply voltage ranging from 2.7V to 12V, as well as ±5V dual supplies.
- Rail-to-Rail Input/Output: The amplifier features rail-to-rail input and output stages, allowing the input voltage to extend 10V beyond either supply without phase inversion or latch-up, and the output voltage to swing to within millivolts of the supplies.
- Low Supply Current: The device has a low supply current of 200μA per amplifier at typical conditions.
- Wide Bandwidth: It offers a gain bandwidth of 3 MHz, making it suitable for high-frequency applications.
- Low Offset Voltage: The OP491GP has a low offset voltage, typically 80μV to 700μV, ensuring high accuracy in signal amplification.
- No Phase Reversal: The unique input stage prevents phase reversal, even when the input voltage exceeds the supply voltage).
Applications
- Industrial Process Control: Suitable for use in industrial control systems due to its robust and reliable performance).
- Battery-Powered Instrumentation: Ideal for battery-powered devices due to its low power consumption).
- Power Supply Control and Protection: Used in power supply control and protection circuits to ensure stable and reliable operation).
- Telecommunications: Applied in telecommunications equipment, especially in portable devices).
- Remote Sensors: Suitable for remote sensing applications, including Hall effect, piezo electric, and resistive transducers).
- Low Voltage Strain Gauge Amplifiers: Used in low voltage strain gauge amplifiers for precise measurement).
- DAC Output Amplifiers: Often used as output amplifiers for Digital-to-Analog Converters (DACs)).
Q & A
- What is the supply voltage range for the OP491GP?
The OP491GP operates from a single supply voltage ranging from 2.7V to 12V, as well as ±5V dual supplies).
- What is the gain bandwidth of the OP491GP?
The gain bandwidth of the OP491GP is 3 MHz).
- What is the typical slew rate of the OP491GP?
The typical slew rate of the OP491GP is 0.5 V/μs).
- What is the operating temperature range for the OP491GP?
The operating temperature range for the OP491GP is -40°C to +125°C).
- What are the available package styles for the OP491GP?
The OP491GP is available in 14-lead PDIP, 14-lead SOIC, and 14-lead TSSOP packages).
- What is the typical offset voltage of the OP491GP?
The typical offset voltage of the OP491GP ranges from 80μV to 700μV).
- What is the input bias current of the OP491GP?
The input bias current of the OP491GP is typically 30 nA to 65 nA).
- Does the OP491GP have phase reversal issues?
No, the OP491GP does not have phase reversal issues due to its unique input stage).
- What are some common applications of the OP491GP?
The OP491GP is commonly used in industrial process control, battery-powered instrumentation, power supply control and protection, telecommunications, remote sensors, low voltage strain gauge amplifiers, and DAC output amplifiers).
- What is the voltage noise of the OP491GP?
The voltage noise of the OP491GP is 2 μV p-p from 0.1 Hz to 10 Hz).
