Overview
The OP491GS-REEL7, produced by Analog Devices Inc., is a quad micropower, single-supply operational amplifier (op-amp) featuring rail-to-rail inputs and outputs. This amplifier is part of the OPx91 family, which includes single (OP191), dual (OP291), and quad (OP491) configurations. The OP491 is fabricated on Analog Devices’ CBCMOS process and is designed for low power consumption and high performance in a variety of applications.
The OP491GS-REEL7 operates from a single supply voltage ranging from 2.7 V to 12 V and can also function with ±5 V dual supplies. It is characterized by its wide input voltage range, rail-to-rail output swing, and low supply current of 300 μA per amplifier. This makes it suitable for use in battery-powered devices and other low-power applications.
Key Specifications
| Parameter | Typical Value | Minimum Value | Maximum Value |
|---|---|---|---|
| Supply Voltage | - | 2.7 V | 12 V |
| Input Voltage Range | - | GND to VS + 10 V | - |
| Output Voltage Swing | - | V+ - 0.01 V | V- + 0.01 V |
| Supply Current per Amplifier | 300 μA | 200 μA | 350 μA |
| Bandwidth | 3 MHz | - | - |
| Slew Rate | 0.5 V/μs | - | - |
| Offset Voltage | 700 μV | - | - |
| Power Supply Rejection Ratio (PSRR) | 80 dB | 75 dB | 110 dB |
| Operating Temperature Range | - | -40°C | +125°C |
Key Features
- Single-Supply Operation: Operates from 2.7 V to 12 V single supply and ±5 V dual supplies.
- Rail-to-Rail Input/Output: Input voltage can safely extend 10 V beyond either supply without phase inversion or latch-up, and output voltage swings to within millivolts of the supplies.
- Low Supply Current: 300 μA per amplifier, making it suitable for battery-powered devices.
- Wide Bandwidth: 3 MHz bandwidth with a slew rate of 0.5 V/μs.
- Low Offset Voltage: 700 μV typical offset voltage.
- No Phase Reversal: Ensures stable operation even when input voltage exceeds supply voltage.
Applications
- Portable Telecommunications Equipment: Ideal for low-power, high-performance requirements.
- Power Supply Control and Protection: Used in power supply monitoring and protection circuits.
- Industrial Process Control: Suitable for industrial automation and control systems.
- Battery-Powered Instrumentation: Optimized for low power consumption in battery-powered devices.
- Remote Sensors: Used in sensors requiring rail-to-rail input amplifiers, such as Hall effect, piezo electric, and resistive transducers.
- Low Voltage Strain Gage Amplifiers and DAC Output Amplifiers: Provides high signal-to-noise ratios in single-supply systems.
Q & A
- What is the supply voltage range for the OP491GS-REEL7?
The OP491GS-REEL7 operates from a single supply voltage ranging from 2.7 V to 12 V and can also function with ±5 V dual supplies.
- What is the typical supply current per amplifier for the OP491GS-REEL7?
The typical supply current per amplifier is 300 μA.
- What is the bandwidth of the OP491GS-REEL7?
The bandwidth of the OP491GS-REEL7 is 3 MHz.
- Does the OP491GS-REEL7 have rail-to-rail input and output capabilities?
Yes, the OP491GS-REEL7 features rail-to-rail inputs and outputs.
- What are the typical applications of the OP491GS-REEL7?
The OP491GS-REEL7 is used in portable telecommunications equipment, power supply control and protection, industrial process control, battery-powered instrumentation, remote sensors, and low voltage strain gage amplifiers and DAC output amplifiers.
- What is the operating temperature range for the OP491GS-REEL7?
The operating temperature range is from -40°C to +125°C.
- What is the slew rate of the OP491GS-REEL7?
The slew rate of the OP491GS-REEL7 is 0.5 V/μs.
- Does the OP491GS-REEL7 have phase reversal protection?
Yes, the OP491GS-REEL7 does not experience phase reversal even when the input voltage exceeds the supply voltage.
- What are the package options for the OP491GS-REEL7?
The OP491GS-REEL7 is available in 14-lead PDIP, narrow 14-lead SOIC, and 14-lead TSSOP packages.
- What is the power supply rejection ratio (PSRR) of the OP491GS-REEL7?
The PSRR of the OP491GS-REEL7 is typically 80 dB to 110 dB.
