Overview
The OPA2544T is a high-voltage, high-current dual operational amplifier produced by Texas Instruments. It is designed to drive a wide variety of high power loads, making it suitable for applications requiring significant output current and voltage swing. The amplifier integrates two high-performance FET op amps with high power output stages on a single monolithic chip, providing a robust solution for demanding applications.
Key Specifications
| Parameter | Min | Typ | Max | Units |
|---|---|---|---|---|
| Input Offset Voltage | ±1 | ±5 | mV | |
| Input Bias Current | ±15 | ±50 | pA | |
| Common-Mode Input Range | (V–) –6 to (V+) –4 | V | ||
| Open-Loop Voltage Gain | 90 | 103 | dB | |
| Gain-Bandwidth Product | 1.4 | MHz | ||
| Slew Rate | 5 | 8 | V/µs | |
| Output Current | 2 | A | ||
| Power Supply Voltage Range | ±10 | ±35 | V | |
| Operating Temperature Range | –40 | +85 | °C | |
| Quiescent Current (total) | ±22 | ±30 | mA |
Key Features
- High output current: 2A minimum
- Wide power supply range: ±10V to ±35V
- High slew rate: 8V/µs
- Internal current limit and thermal shutdown protection
- FET input with low input bias current: 50pA max
- 11-lead plastic package
- Operating temperature range: –40°C to +85°C
Applications
- Motor drivers
- Programmable power supplies
- Servo amplifiers
- Valve and actuator drivers
- Magnetic deflection coil drivers
- Audio amplifiers
Q & A
- What is the maximum output current of the OPA2544T?
The OPA2544T can provide up to 2A of output current. - What is the power supply voltage range for the OPA2544T?
The power supply voltage range is ±10V to ±35V. - What is the slew rate of the OPA2544T?
The slew rate is 8V/µs. - Does the OPA2544T have internal protection features?
Yes, it has internal current limit and thermal shutdown protection. - What type of input does the OPA2544T have?
The OPA2544T has FET inputs with a low input bias current of 50pA max. - In what package is the OPA2544T available?
The OPA2544T is available in an 11-lead plastic package. - What is the operating temperature range of the OPA2544T?
The operating temperature range is –40°C to +85°C. - What are some common applications for the OPA2544T?
Common applications include motor drivers, programmable power supplies, servo amplifiers, valve and actuator drivers, magnetic deflection coil drivers, and audio amplifiers. - How does the thermal shutdown protection work in the OPA2544T?
The thermal shutdown protection activates at a junction temperature of approximately 155°C to protect the amplifier from damage due to excessive power dissipation. - Can the OPA2544T operate with unbalanced power supplies?
Yes, the power supply voltages of the OPA2544T do not need to be equal, allowing for unbalanced power supply configurations.
