Overview
The OPA547T-1G3, 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 capabilities. It operates from either single or dual supplies, providing design flexibility, and is internally protected against over-temperature conditions and current overloads. The OPA547T-1G3 is available in industry-standard 7-lead staggered and straight lead TO-220 packages, as well as a 7-lead DDPAK surface-mount plastic power package, ensuring excellent thermal performance.
Key Specifications
| Parameter | Condition | Min | Typ | Max | Units |
|---|---|---|---|---|---|
| Supply Voltage | V+ to V– | - | - | 60V | V |
| Input Voltage | (V–) – 0.5V to (V+) + 0.5V | - | - | - | V |
| Output Current | - | - | - | 500mA | 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 |
Key Features
- Wide Supply Range: Single supply: +8V to +60V, Dual supply: ±4V to ±30V
- High Output Current: 500mA continuous
- Wide Output Voltage Swing: Excellent output voltage swing capabilities
- Full Protection: Thermal shutdown and adjustable current limit
- Output Disable Control: Enable/Status pin for output disable and thermal shutdown indication
- High Slew Rate: High slew rate for fast signal response
- Adjustable Current Limit: Current limit adjustable from 0mA to 750mA with a 0 to 150µA control signal
Applications
The OPA547T-1G3 is suitable for a variety of applications, including:
- Programmable Power Supplies: Can be used to build programmable power supplies where both output voltage and current are user-controlled.
- Voltage Sources: Can provide an accurate voltage source with minimal external components.
- Industrial Control Systems: Ideal for driving high-current loads in industrial control systems.
- Automotive Systems: Suitable for automotive applications due to its wide operating temperature range and high reliability.
Q & A
- What is the supply voltage range for the OPA547T-1G3?
The OPA547T-1G3 operates from single supplies (+8V to +60V) or dual supplies (±4V to ±30V). - What is the maximum output current of the OPA547T-1G3?
The maximum output current is 500mA continuous. - How is the current limit adjusted on the OPA547T-1G3?
The current limit can be adjusted from 0mA to 750mA using a 0 to 150µA control signal on the ILIM pin. - What is the purpose of the Enable/Status (E/S) pin?
The E/S pin disables the output stage and indicates thermal shutdown when pulled low or monitored accordingly. - What are the package options for the OPA547T-1G3?
It is available in 7-lead staggered and straight lead TO-220 packages, and a 7-lead DDPAK surface-mount plastic power package. - What is the operating temperature range for the OPA547T-1G3?
The operating temperature range is –40°C to +85°C. - How does the thermal shutdown feature work?
The thermal shutdown feature triggers when the junction temperature exceeds 160°C, and it resets when the temperature drops below 140°C. - Can the OPA547T-1G3 be used in multiplexing applications?
Yes, it can be used in low-frequency, multichannel applications due to its output disable capability. - What is the quiescent current in shutdown mode?
The quiescent current in shutdown mode is approximately 4mA. - How does the OPA547T-1G3 handle over-temperature conditions?
The OPA547T-1G3 is internally protected against over-temperature conditions through its thermal shutdown feature.
