High-Voltage, High-Current, Wide-Output-Voltage-Swing Power Operational Amplfier
Product details
Parameters
Package | Pins | Size
Features
- Wide supply range
- Single supply: 8 V to 60 V
- Dual supply: ±4 V to ±30 V
- High-output current:
- 3-A continuous
- 5-A peak
- Wide output voltage swing
- Fully protected:
- Thermal shutdown
- Adjustable current limit
- Output disable control˜
- Thermal shutdown indicator
- High slew rate: 10 V
- Low quiescent current
- Packages:
- 7-lead TO-220, zip and straight leads
- 7-lead DDPAK surface-mount
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Description
The OPA548 device is a low-cost, high-voltage, and high-current operational amplifier that is designed to drive a wide variety of loads. A laser-trimmed, monolithic, integrated circuit provides excellent low-level signal accuracy and high-output voltage and current.
The OPA548 operates from either single or dual supplies for design flexibility. In single-supply operation, the input common-mode range extends below ground.
The OPA548 is internally protected against overtemperature conditions and current overloads. In addition, the OPA548 is designed to provide an accurate, user-selected current limit. Unlike other designs that use a power resistor in series with the output current path, the OPA548 senses the load indirectly. The current limit is adjustable from 0 A to 5 A with an external resistor and potentiometer, or controllable digitally with a voltage-out or current-out DAC.
The Enable/Status (E/S) pin provides two functions. An input on the pin not only disables the output stage to effectively disconnect the load, but also reduces the quiescent current to conserve power. The E/S pin output can be monitored to determine if the OPA548 is in thermal shutdown.
The OPA548 device is available in an industry-standard 7-lead staggered and straight lead TO-220 package, and a 7-lead DDPAK surface-mount plastic power package. The copper tab allows easy mounting to a heat sink or circuit board for excellent thermal performance. The device is specified for operation over the extended industrial temperature range, –40°C to 85°C. A SPICE macromodel is available for design analysis.
Technical documentation
| Type | Title | Date | |
|---|---|---|---|
| * | Datasheet | OPA548 High-Voltage, High-Current Operational Amplifier datasheet (Rev. D) | Dec. 18, 2019 |
| E-book | The Signal e-book: A compendium of blog posts on op amp design topics | Mar. 28, 2017 | |
| User guide | OPA547EVM, OPA548EVM User's Guide | Nov. 10, 2015 | |
| Technical articles | Why correct voltage matters for op-amp PowerPads™ | Nov. 06, 2014 | |
| Application note | DC MOTOR SPEED CONTROLLER: Control a DC Motor without Tachometer Feedback | Sep. 27, 2000 | |
| Application note | Power Amplifier Stress and Power Handling Limitations | Sep. 27, 2000 |
Design & development
For additional terms or required resources, click any title below to view the detail page where available.Hardware development
Description
The OPA548EVM is a platform for evaluating the OPA548 in a variety of circuit configurations. Circuit configuations include inverting/non-inverting gain, single/dual power supply, internal/external load and external reference. Access is provided to the Enable/Shutdown pin and LED's provide visual (...)
Features
- Easily configured for most key Operational Amplifier circuits
- Large heatsink allows operation with a wide variety of loads
- LED indicators for Power On, Enable/Shutdown, and Thermal Shutdown
- Surface mount pads are provided for small loads, and Banana jacks allow larger loads
Description
The Universal OPAMPEVM is a series of general purpose blank circuit boards that simplify prototyping circuits for a variety of IC package types. The evaluation module board design allows many different circuits to be constructed easily and quickly. Five models are offered with each targeted for (...)
Design tools & simulation
Features
- Leverages Cadence PSpice Technology
- Preinstalled library with a suite of digital models to enable worst-case timing analysis
- Dynamic updates ensure you have access to most current device models
- Optimized for simulation speed without loss of accuracy
- Supports simultaneous analysis of multiple products
- (...)
Features
- Expedites circuit design with analog-to-digital converters (ADCs) and digital-to-analog converters (DACs)
- Noise calculations
- Common unit translation
- Solves common amplifier circuit design problems
- Gain selections using standard resistors
- Filter configurations
- Total noise for common amplifier configurations
- (...)
CAD/CAE symbols
| Package | Pins | Download |
|---|---|---|
| DDPAK/TO-263 (KTW) | 7 | View options |
| TO-220 (KC) | 7 | View options |
| TO-220 (KVT) | 7 | View options |
Ordering & quality
- RoHS
- REACH
- Device marking
- Lead finish/Ball material
- MSL rating/Peak reflow
- MTBF/FIT estimates
- Material content
- Qualification summary
- Ongoing reliability monitoring
Support & training
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