Overview
The OP495GS-REEL, produced by Analog Devices Inc., is a quad operational amplifier (op-amp) known for its rail-to-rail output swing and high dc accuracy. This CBCMOS (Complementary Bipolar CMOS) op-amp combines the benefits of bipolar and CMOS technologies, offering lower noise and higher accuracy compared to pure CMOS designs. It is particularly suited for applications requiring high precision and low power consumption.
Key Specifications
| Parameter | Symbol | Conditions | Min | Typ | Max | Unit |
|---|---|---|---|---|---|---|
| Input Offset Voltage | VOS | VCM = 0 V | - | 300 | - | μV |
| Large Signal Voltage Gain | AVO | RL = 10 kΩ | 1000 | - | 4000 | V/mV |
| Output Voltage Swing High | VOH | RL = 10 kΩ to GND | 4.90 | - | 4.94 | V |
| Output Voltage Swing Low | VOL | RL = 10 kΩ to GND | 0.7 | - | 2 | mV |
| Output Current | IOUT | - | ±11 | - | ±18 | mA |
| Supply Current per Amplifier | ISY | VOUT = 2.5 V, RL = ∞ | - | - | 150 | μA |
| Slew Rate | SR | RL = 10 kΩ | - | 0.03 | - | V/μs |
| Gain Bandwidth Product | GBP | - | - | 75 | kHz |
Key Features
- Rail-to-Rail Output Swing: The OP495 can swing its output voltage from the negative supply to the positive supply, providing zero-in/zero-out capability.
- High DC Accuracy: Features low offset voltage (300 μV) and high open-loop gain (minimum of 1000 V/mV), making it suitable for high accuracy systems.
- Low Noise and High Accuracy: Utilizes a bipolar front end to achieve lower noise and higher accuracy compared to CMOS designs.
- Low Supply Current: Maximum supply current per amplifier is 150 μA, making it efficient for battery-operated devices.
- Stability with Capacitive Loads: Stable with loads in excess of 300 pF, useful for driving coax cable or large FET transistors.
Applications
- Battery-Operated Instrumentation: Ideal for devices powered by batteries such as lithium batteries due to its low power consumption.
- Servo Amplifiers and Actuator Drives: Suitable for applications requiring precise control and high output current.
- Sensor Conditioners: Used in sensor conditioning circuits where high accuracy and low noise are critical.
- Power Supply Control: Can be used in power supply control circuits to ensure stable and accurate output voltages.
- Transformer and Inductive Load Driving: Efficient in driving inductive loads such as transformers, enhancing overall system efficiency.
Q & A
- What is the input offset voltage of the OP495?
The input offset voltage of the OP495 is typically 300 μV.
- What is the large signal voltage gain of the OP495?
The large signal voltage gain of the OP495 is a minimum of 1000 V/mV with a 10 kΩ load.
- What is the output voltage swing of the OP495?
The output voltage swing of the OP495 is from 0.7 mV to 4.94 V for a 10 kΩ load.
- How much current can the OP495 supply to the load?
The OP495 can supply up to ±18 mA of output current.
- What is the supply current per amplifier for the OP495?
The supply current per amplifier for the OP495 is a maximum of 150 μA.
- Is the OP495 stable with capacitive loads?
Yes, the OP495 is stable with loads in excess of 300 pF.
- What are the typical applications of the OP495?
The OP495 is typically used in battery-operated instrumentation, servo amplifiers, actuator drives, sensor conditioners, and power supply control.
- Can the OP495 operate on a single 5 V supply?
Yes, the OP495 can operate on a single 5 V supply and is also specified for 3 V operation.
- What is the gain bandwidth product of the OP495?
The gain bandwidth product of the OP495 is 75 kHz.
- Is the OP495GS-REEL still in production?
No, the OP495GS-REEL is obsolete and no longer manufactured.
