Overview
The OPA548FKTWTG3, produced by Texas Instruments, is a high-voltage, high-current operational amplifier designed to drive a wide variety of loads. This device is part of the OPA548 series and is known for its low cost, high output voltage, and high output current capabilities. It operates from either single or dual supplies, offering design flexibility, and is suitable for applications requiring a wide supply range from 8 V to 60 V (or ±4 V to ±30 V). The OPA548 features a laser-trimmed, monolithic integrated circuit that ensures excellent low-level signal accuracy and high-output voltage and current. It is fully protected with features such as thermal shutdown, adjustable current limit, and output disable control, making it robust and reliable for various industrial and laboratory applications.
Key Specifications
| Parameter | Min | Typ | Max | Unit |
|---|---|---|---|---|
| Supply Voltage | 8 | - | 60 | V |
| Dual Supply Voltage | ±4 | - | ±30 | V |
| Output Current (Continuous) | - | - | ±3 | A |
| Output Current (Peak) | - | - | ±5 | A |
| Input Offset Voltage | ±2 | ±10 | - | mV |
| Input Offset Voltage Drift | ±30 | - | - | µV/°C |
| Power Supply Rejection Ratio | 30 | 100 | - | - |
| Operating Temperature Range | -40 | - | 85 | °C |
| Thermal Shutdown Temperature | - | - | 160 | °C |
Key Features
- Wide Supply Range: Operates from 8 V to 60 V (or ±4 V to ±30 V) for flexibility in design.
- High-Output Current: Capable of delivering up to 3 A continuous and 5 A peak current.
- Adjustable Current Limit: The current limit can be set from 0 A to 5 A using an external resistor and potentiometer or digitally controlled.
- Enable/Status (E/S) Pin: Allows disabling the output stage and monitoring thermal shutdown status.
- Thermal Shutdown Protection: Automatically shuts down the output when the die temperature reaches approximately 160°C.
- Low Quiescent Current: Reduces power consumption when the output is disabled.
- High Slew Rate: 10 V/µs for fast response times.
- Industry-Standard Packages: Available in 7-lead TO-220 and 7-lead DDPAK surface-mount packages for easy integration.
Applications
- Semiconductor Manufacturing and Test: Ideal for driving various loads in semiconductor fabrication and testing environments.
- Lab and Field Instrumentation: Suitable for use in laboratory equipment and field instruments requiring high current and voltage capabilities.
- LCD Test Equipment: Used in testing and driving LCD displays.
- Analog Input Modules: Employed in analog input modules for various industrial applications.
- Ultrasound Scanners: Utilized in medical ultrasound equipment due to its high current and voltage handling capabilities.
Q & A
- What is the operating voltage range of the OPA548?
The OPA548 operates from 8 V to 60 V (or ±4 V to ±30 V).
- What is the maximum continuous output current of the OPA548?
The maximum continuous output current is ±3 A.
- How is the current limit adjusted in the OPA548?
The current limit can be adjusted from 0 A to 5 A using an external resistor and potentiometer or digitally controlled.
- What is the purpose of the Enable/Status (E/S) pin?
The E/S pin allows disabling the output stage and monitoring thermal shutdown status.
- What is the thermal shutdown temperature of the OPA548?
The output shuts down when the die temperature reaches approximately 160°C.
- What are the available packages for the OPA548?
The OPA548 is available in 7-lead TO-220 and 7-lead DDPAK surface-mount packages.
- What is the operating temperature range of the OPA548?
The device operates over the –40°C to 85°C temperature range.
- Does the OPA548 have any built-in protection features?
Yes, it includes thermal shutdown, adjustable current limit, and output disable control.
- What is the slew rate of the OPA548?
The slew rate is 10 V/µs.
- Is a SPICE macromodel available for the OPA548?
Yes, a SPICE macromodel is available for design analysis.
