Overview
The OPA547FKTWT is a high-voltage, high-current operational amplifier produced by Texas Instruments. It is designed to drive a wide variety of loads with excellent low-level signal accuracy and high output voltage and current. This amplifier operates from either single or dual supplies, offering design flexibility. The OPA547FKTWT features internal protection against over-temperature conditions and current overloads, making it a reliable choice for various applications.
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: Features thermal shutdown and adjustable current limit.
- Output Disable Control: Output stage can be disabled to conserve power and for multiplexing in low-frequency applications.
- Thermal Shutdown Indicator: Enable/Status pin can be monitored to determine thermal shutdown status.
- Adjustable Current Limit: Current limit can be set from 0mA to 750mA using a low-level control signal.
- High Slew Rate: Suitable for applications requiring fast signal response.
Applications
- Motor Drive Circuits: Ideal for driving motors due to its high output current and voltage swing capabilities.
- Programmable Power Supplies: Can be used to build programmable power supplies with adjustable output voltage and current.
- Industrial Control Systems: Suitable for various industrial control applications requiring high reliability and performance.
- Audio and Signal Processing: Can be used in audio and signal processing applications due to its low noise and high slew rate.
Q & A
- What is the operating temperature range of the OPA547FKTWT?
The OPA547FKTWT operates over an extended industrial temperature range of –40°C to +85°C.
- What is the maximum output current of the OPA547FKTWT?
The maximum continuous output current is 500mA.
- How can the current limit be adjusted on the OPA547FKTWT?
The current limit can be adjusted from 0mA to 750mA using a resistor or potentiometer connected between the ILIM pin and V–, or digitally controlled with a current-out or voltage-out DAC.
- 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 OPA547FKTWT is in thermal shutdown.
- What are the package options for the OPA547FKTWT?
The OPA547FKTWT is available in 7-lead staggered and straight lead TO-220 packages, and a 7-lead DDPAK surface-mount plastic power package.
- How does the OPA547FKTWT protect against over-temperature conditions?
The OPA547FKTWT features internal thermal shutdown protection to prevent damage from over-temperature conditions.
- Can the OPA547FKTWT operate with single or dual supplies?
Yes, the OPA547FKTWT can operate from either single (+8V to +60V) or dual (±4V to ±30V) supplies.
- What is the typical input offset voltage of the OPA547FKTWT?
The typical input offset voltage is ±5mV.
- How can output stage instability be prevented in the OPA547FKTWT?
Output stage instability can be prevented by using a R/C network for compensation, especially when driving into current limit.
- What is the recommended method for soldering the OPA547FKTWT surface-mount package?
Vapor-phase or IR reflow techniques are recommended for soldering the OPA547FKTWT surface-mount package.
