Overview
The OP495GS from Analog Devices Inc. is a quad rail-to-rail operational amplifier designed for high accuracy and versatility in various applications. This amplifier combines the benefits of a bipolar front end with the advantages of CMOS technology, offering lower noise and higher accuracy compared to pure CMOS designs. It operates on a single supply from 3 V to 36 V, making it suitable for a wide range of power supply conditions, including those found in battery-operated devices.
Key Specifications
| Parameter | Conditions | Min | Typ | Max | Unit |
|---|---|---|---|---|---|
| Supply Voltage | 3 | 36 | V | ||
| Input Offset Voltage | VS = 5 V | 300 | μV | ||
| Open-Loop Gain | RL = 10 kΩ | 1000 | 4000 | V/mV | |
| Gain Bandwidth Product | 85 kHz | ||||
| Supply Current per Amplifier | VOUT = 1.5 V, RL = ∞, −40°C ≤ TA ≤ +125°C | 150 μA | |||
| Output Voltage Swing High | RL = 10 kΩ to GND | 14.80 | V | ||
| Output Voltage Swing Low | RL = 10 kΩ to GND | -14.95 | V | ||
| Common-Mode Rejection Ratio | −15.0 V ≤ VCM ≤ +13.5 V, −40°C ≤ TA ≤ +125°C | 90 | 110 | dB | |
| Operating Temperature | -40 | 125 | °C | ||
| Package | 16-SOIC |
Key Features
- Rail-to-rail output swing, allowing the output voltage to swing to within a few millivolts of the supply rails.
- Single-supply operation from 3 V to 36 V, making it versatile for various power supply conditions.
- Low offset voltage of 300 μV, ensuring high dc accuracy.
- High open-loop gain of up to 4000 V/mV and a gain bandwidth product of 85 kHz.
- Low supply current per amplifier, typically 150 μA, which is beneficial for battery-operated devices.
- Unity-gain stable and capable of driving capacitive loads in excess of 300 pF.
- High common-mode rejection ratio (CMRR) of up to 110 dB.
Applications
- Battery-operated instrumentation due to its low power consumption and single-supply operation.
- Servo amplifiers and actuator drives where high accuracy and stability are required.
- Sensor conditioners and power supply control systems.
- Driving power transistors and H bridges, enhancing efficiency and power transfer.
- Applications requiring the drive of inductive loads, such as transformers.
- Driving coax cable or large FET transistors due to its stability with capacitive loads.
Q & A
- What is the supply voltage range for the OP495GS? The OP495GS operates on a single supply from 3 V to 36 V.
- What is the typical input offset voltage of the OP495GS? The typical input offset voltage is 300 μV.
- What is the gain bandwidth product of the OP495GS? The gain bandwidth product is 85 kHz.
- Is the OP495GS stable with capacitive loads? Yes, the OP495GS is stable with loads in excess of 300 pF.
- What is the maximum supply current per amplifier for the OP495GS? The maximum supply current per amplifier is 150 μA.
- What are the common applications of the OP495GS? Common applications include battery-operated instrumentation, servo amplifiers, sensor conditioners, and power supply control.
- What is the operating temperature range for the OP495GS? The operating temperature range is from -40°C to 125°C.
- What package type is the OP495GS available in? The OP495GS is available in a 16-SOIC package.
- Does the OP495GS support rail-to-rail output swing? Yes, the OP495GS supports rail-to-rail output swing.
- What is the common-mode rejection ratio (CMRR) of the OP495GS? The CMRR is up to 110 dB.
