Overview
The OPA567AIRHGT from Texas Instruments is a low-cost, high-current operational amplifier designed for driving a wide variety of loads while operating on low-voltage supplies. It operates from either single or dual supplies, offering design flexibility and rail-to-rail swing on both input and output. The amplifier is unity gain stable, easy to use, and free from phase inversion problems. It maintains high performance even at voltage swings near the output rails.
Key Specifications
| Parameter | Value | Units |
|---|---|---|
| Package | Quad Flatpack No-lead (QFN) | - |
| Pins | 12 | - |
| Operating Temperature Range | -40°C to +85°C | °C |
| Output Current | 2A | A |
| Output Swing | Within 300mV of supply rails | - |
| Supply Voltage Range | 2.7V to 5.5V | V |
| Input Offset Voltage | ±0.5 to ±2 mV | mV |
| Input Bias Current | ±1 to ±10 pA | pA |
| Input Voltage Noise Density | 12 nV/√Hz at 1kHz | nV/√Hz |
Key Features
- HIGH OUTPUT CURRENT: 2A
- OUTPUT SWINGS TO: 150mV of Rails with IO = 2A
- THERMAL PROTECTION: Thermal flag warns of thermal overstress
- ADJUSTABLE CURRENT LIMIT: Set with an external resistor or digitally via a DAC
- TWO FLAGS: Current Limit and Temperature Warning
- LOW SUPPLY VOLTAGE OPERATION: 2.7V to 5.5V
- SHUTDOWN FUNCTION WITH OUTPUT DISABLE: Independent output disable via the Enable pin
- SMALL POWER PACKAGE: 5mm x 5mm QFN package with an exposed thermal pad
Applications
- THERMOELECTRIC COOLER DRIVER: Suitable for driving thermoelectric coolers
- LASER DIODE PUMP DRIVER: Ideal for laser diode applications
- VALVE, ACTUATOR DRIVER: Used in valve and actuator control systems
- SYNCHRO, SERVO DRIVER: Applicable in synchro and servo motor control
- TRANSDUCER EXCITATION: Suitable for transducer excitation
- GENERAL LINEAR POWER BOOSTER FOR OP AMPS: Enhances the power capabilities of operational amplifiers
Q & A
- What is the maximum output current of the OPA567?
The maximum output current of the OPA567 is 2A. - What is the operating temperature range of the OPA567?
The OPA567 operates over the industrial temperature range of -40°C to +85°C. - How can the current limit be set on the OPA567?
The current limit can be set with an external resistor or digitally adjusted via a Digital-to-Analog Converter (DAC). - What are the two flags provided by the OPA567?
The OPA567 provides a current limit flag (IFLAG) and a thermal flag (TFLAG) to warn of current limit conditions and thermal overstress, respectively. - Can the output of the OPA567 be independently disabled?
Yes, the output of the OPA567 can be independently disabled using the Enable pin. - What is the supply voltage range for the OPA567?
The OPA567 operates from a supply voltage range of 2.7V to 5.5V. - What package type is the OPA567 available in?
The OPA567 is available in a 5mm x 5mm Quad Flatpack No-lead (QFN) package. - Does the OPA567 have thermal protection?
Yes, the OPA567 features thermal protection with a thermal flag that warns of thermal overstress. - What are some common applications of the OPA567?
The OPA567 is commonly used in thermoelectric cooler drivers, laser diode pump drivers, valve and actuator drivers, synchro and servo drivers, transducer excitation, and as a general linear power booster for operational amplifiers. - How does the OPA567 handle phase inversion problems?
The OPA567 is designed to be free from phase inversion problems found in some power amplifiers.
