Overview
The OPA547TG3, 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. The OPA547TG3 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 | 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 | ||
| Junction Temperature | 150°C | °C | |||
| Lead Temperature (soldering 10s) | 300°C | °C |
Key Features
- Wide Supply Range: Operates from single (+8V to +60V) or dual (±4V to ±30V) supplies.
- High Output Current: Continuous output current of 500mA.
- Wide Output Voltage Swing: Excellent output voltage swing capabilities.
- Full Protection: Includes thermal shutdown and adjustable current limit.
- Output Disable Control: Enables the output stage to be disabled, reducing quiescent current.
- Thermal Shutdown Indicator: The Enable/Status (E/S) pin can be monitored to determine if the OPA547 is in thermal shutdown.
- Adjustable Current Limit: Current limit can be set from 0mA to 750mA using a control signal.
- High Slew Rate: Suitable for high-speed applications.
Applications
- Motor Drive Circuits: Ideal for driving motors due to its high current and voltage capabilities.
- Programmable Power Supplies: Can be used to build programmable power supplies with adjustable output voltage and current.
- Voltage Source Applications: Can provide an accurate voltage source with minimal external components.
- Multiplexing in Multichannel Applications: The output disable feature allows for multiplexing in low-frequency applications.
Q & A
- What is the operating temperature range of the OPA547TG3?
The OPA547TG3 operates over an extended industrial temperature range of –40°C to +85°C.
- What is the maximum output current of the OPA547TG3?
The maximum continuous output current is 500mA.
- How can the current limit be adjusted on the OPA547TG3?
The current limit can be adjusted from 0mA to 750mA using a control signal on the ILIM pin.
- What is the purpose of the Enable/Status (E/S) pin?
The E/S pin can disable the output stage and also indicate if the OPA547 is in thermal shutdown.
- Can the OPA547TG3 operate with single or dual supplies?
Yes, it can operate from either single (+8V to +60V) or dual (±4V to ±30V) supplies.
- What is the typical input offset voltage of the OPA547TG3?
The typical input offset voltage is ±5 mV.
- How does the OPA547TG3 protect against over-temperature conditions?
The OPA547TG3 is internally protected against over-temperature conditions through thermal shutdown.
- What is the maximum junction temperature of the OPA547TG3?
The maximum junction temperature is 150°C.
- Can the OPA547TG3 be used in motor drive circuits?
Yes, it is suitable for motor drive circuits due to its high current and voltage capabilities.
- How can the OPA547TG3 be used in programmable power supply applications?
The OPA547TG3 can be used to build programmable power supplies with adjustable output voltage and current using external components like potentiometers or DACs.
