Overview
The OPA548T-1, 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 family and is known for its low cost, high voltage, and high current capabilities. It operates from either single or dual supplies, offering flexibility in design. The OPA548T-1 features a laser-trimmed, monolithic integrated circuit that provides excellent low-level signal accuracy and high-output voltage and current. It is internally protected against overtemperature conditions and current overloads, making it a reliable choice for various applications.
Key Specifications
| Parameter | Min | Typ | Max | Unit |
|---|---|---|---|---|
| Supply Voltage (Single Supply) | 8 | 60 | V | |
| Supply Voltage (Dual Supply) | ±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 | ||
| Slew Rate | 10 | V/µs | ||
| Quiescent Current | ±17 | ±20 | mA | |
| Operating Temperature Range | –40 | 85 | °C | |
| Thermal Shutdown Temperature | 160 | °C | ||
| Reset Temperature from Shutdown | 140 | °C |
Key Features
- Wide Supply Range: Operates from single supply (8 V to 60 V) or dual supply (±4 V to ±30 V).
- High-Output Current: Continuous output current of 3 A and peak output current of 5 A.
- Wide Output Voltage Swing: Capable of driving a wide variety of loads with high output voltage swing.
- Adjustable Current Limit: Current limit adjustable from 0 A to 5 A using an external resistor or digitally controlled.
- Output Disable Control: Output stage can be disabled to conserve power, and status can be monitored.
- Thermal Shutdown and Indicator: Internally protected against overtemperature conditions with a thermal shutdown indicator.
- High Slew Rate: Slew rate of 10 V/µs.
- Low Quiescent Current: Low quiescent current to minimize power consumption.
- Packages: Available in 7-lead TO-220 and 7-lead DDPAK surface-mount packages.
Applications
- Semiconductor Manufacturing: Suitable for various semiconductor manufacturing processes.
- Semiconductor Test: Used in testing and characterization of semiconductor devices.
- Lab and Field Instrumentation: Ideal for laboratory and field instrumentation due to its high accuracy and reliability.
- LCD Test: Used in testing and driving LCD displays.
- Analog Input Module: Can be used in analog input modules for data acquisition systems.
- Ultrasound Scanner: Suitable for use in ultrasound scanners due to its high current and voltage capabilities.
Q & A
- What is the supply voltage range for the OPA548T-1?
The OPA548T-1 operates from a single supply of 8 V to 60 V or a dual supply of ±4 V to ±30 V.
- What is the maximum continuous output current of the OPA548T-1?
The maximum continuous output current is 3 A, with a peak output current of 5 A.
- How is the current limit adjusted on the OPA548T-1?
The current limit can be adjusted from 0 A to 5 A using an external resistor or digitally controlled.
- What is the thermal shutdown temperature of the OPA548T-1?
The thermal shutdown temperature is approximately 160°C, resetting when the die has cooled to 140°C.
- What are the available packages for the OPA548T-1?
The device is available in 7-lead TO-220 and 7-lead DDPAK surface-mount packages.
- What is the slew rate of the OPA548T-1?
The slew rate is 10 V/µs.
- How does the Enable/Status (E/S) pin function?
The E/S pin can disable the output stage and also indicate thermal shutdown status.
- What is the operating temperature range for the OPA548T-1?
The operating temperature range is –40°C to 85°C.
- Is the OPA548T-1 suitable for high-reactive loads?
Yes, but local feedback in the output stage may require additional compensation for highly reactive loads.
- What are some typical applications of the OPA548T-1?
Typical applications include semiconductor manufacturing, semiconductor test, lab and field instrumentation, LCD test, analog input modules, and ultrasound scanners.
