Overview
The OPA547F/500G3, produced by Texas Instruments, is a high-voltage, high-current operational amplifier designed for driving a wide variety of loads. This low-cost, laser-trimmed monolithic integrated circuit offers excellent low-level signal accuracy and high output voltage and current. The OPA547F operates from either single or dual supplies, providing design flexibility, and is internally protected against over-temperature conditions and current overloads.
Key Specifications
| Parameter | Condition | Min | Typ | Max | Units |
|---|---|---|---|---|---|
| Supply Voltage | Single Supply | +8V | +60V | V | |
| Supply Voltage | Dual Supply | ±4V | ±30V | V | |
| Output Current | Continuous | ±500 mA | mA | ||
| Input Offset Voltage | VCM = 0, IO = 0 | ±1 | ±5 | mV | |
| Input Bias Current | VCM = 0V | -100 | -500 | nA | |
| Operating Temperature | -40°C | +85°C | °C | ||
| Storage Temperature | -55°C | +125°C | °C | ||
| Junction Temperature | 150°C | °C | |||
| Lead Temperature (soldering 10s) | 300°C | °C |
Key Features
- Wide supply range: Single supply from +8V to +60V and dual supply from ±4V to ±30V.
- High output current: Continuous output current of up to ±500 mA.
- Wide output voltage swing.
- Full protection: Thermal shutdown and adjustable current limit.
- Output disable control and thermal shutdown indicator.
- High slew rate.
- Adjustable current limit from 0 mA to 750 mA using a control signal.
- Enable/Status (E/S) pin for output disable and thermal shutdown monitoring.
Applications
The OPA547F is versatile and can be used in various configurations, including non-inverting amplifiers, voltage sources, and programmable power supplies. It is suitable for applications requiring high output current and voltage swing, such as industrial control systems, medical devices, and power supply systems.
Figure 1 in the datasheet shows a basic non-inverting amplifier configuration, and Figure 12 illustrates how to use the OPA547F as an accurate voltage source. Additionally, Figure 13 demonstrates a programmable power supply using the OPA547F with adjustable output voltage and current.
Q & A
- What is the supply voltage range for the OPA547F?
The OPA547F operates from a single supply of +8V to +60V or a dual supply of ±4V to ±30V.
- What is the maximum continuous output current of the OPA547F?
The maximum continuous output current is ±500 mA.
- How is the current limit adjusted on the OPA547F?
The current limit can be adjusted from 0 mA to 750 mA using a control signal to the ILIM pin.
- What is the purpose of the Enable/Status (E/S) pin?
The E/S pin disables the output stage and reduces quiescent current when forced low, and it can be monitored to determine if the OPA547F is in thermal shutdown.
- What are the operating and storage temperature ranges for the OPA547F?
The operating temperature range is –40°C to +85°C, and the storage temperature range is –55°C to +125°C.
- Can the OPA547F be used in non-inverting amplifier configurations?
Yes, the OPA547F can be used in virtually any op-amp configuration, including non-inverting amplifiers.
- How does the thermal protection work on the OPA547F?
The OPA547F has internal thermal protection that triggers thermal shutdown if the junction temperature exceeds 125°C.
- What is the typical quiescent current when the output is disabled?
The quiescent current drops to approximately 4 mA when the output is disabled.
- Can the OPA547F be used to build a programmable power supply?
Yes, the OPA547F can be used to build a programmable power supply with adjustable output voltage and current.
- What are the recommended soldering techniques for the OPA547F surface-mount package?
Vapor-phase or IR reflow techniques are recommended for soldering the OPA547F surface-mount package. Wave soldering is not recommended due to excessive thermal shock and shadowing of nearby devices).
