Overview
The OPA445AUG4 is a high-voltage FET-input operational amplifier manufactured by Texas Instruments. This monolithic operational amplifier is designed for operation from power supplies up to ±45V, making it suitable for a wide range of high-voltage applications. The OPA445AUG4 features a high slew rate of 15 V/µs and a low input bias current of 10 pA, which are critical for applications requiring high output voltage or large common-mode voltage swings. It is available in an 8-SOIC package, which is surface-mountable and RoHS compliant.
Key Specifications
| Parameter | Value |
|---|---|
| Manufacturer | Texas Instruments |
| Package | 8-SOIC (0.154", 3.90mm Width) |
| Amplifier Type | General Purpose |
| Number of Circuits | 1 |
| Slew Rate | 15 V/µs |
| Gain Bandwidth Product | 2 MHz |
| Input Bias Current | 10 pA |
| Input Offset Voltage | 1.5 mV |
| Supply Current | 4.2 mA |
| Output Current per Channel | 15 mA |
| Supply Voltage Range | ±10 V to ±45 V, 20 V to 90 V |
| Operating Temperature | -25°C to 85°C |
| Mounting Type | Surface Mount |
Key Features
- High-voltage operation: Up to ±45V or a total of 90V.
- High slew rate: 15 V/µs for wide power-bandwidth response.
- Low input bias current: 10 pA, ideal for high-impedance feedback networks.
- Low input offset voltage: 1.5 mV, achieved through laser trimming of the input circuitry.
- High output current: Up to 15 mA per channel.
- Surface-mount package: 8-SOIC, which is RoHS compliant.
Applications
- Test equipment: For high-precision measurements.
- High-voltage regulators: Due to its high voltage handling capability.
- Power amplifiers: For applications requiring high output voltage.
- Data acquisition: For signal conditioning and high-voltage signal handling.
- Signal conditioning: For various industrial and medical applications.
- Audio: For high-fidelity audio systems.
- Piezo drivers: For driving piezoelectric devices.
Q & A
- What is the maximum supply voltage for the OPA445AUG4? The OPA445AUG4 can operate from power supplies up to ±45V or a total of 90V.
- What is the slew rate of the OPA445AUG4? The slew rate is 15 V/µs.
- What is the input bias current of the OPA445AUG4? The input bias current is 10 pA.
- What is the typical input offset voltage of the OPA445AUG4? The typical input offset voltage is 1.5 mV.
- What is the maximum output current per channel of the OPA445AUG4? The maximum output current per channel is 15 mA.
- In what package is the OPA445AUG4 available? The OPA445AUG4 is available in an 8-SOIC package.
- Is the OPA445AUG4 RoHS compliant? Yes, the OPA445AUG4 is RoHS compliant.
- What are some common applications of the OPA445AUG4? Common applications include test equipment, high-voltage regulators, power amplifiers, data acquisition, signal conditioning, audio systems, and piezo drivers.
- What is the operating temperature range of the OPA445AUG4? The operating temperature range is -25°C to 85°C.
- How should the power-supply terminals be bypassed for the OPA445AUG4? The power-supply terminals should be bypassed with 0.1µF capacitors or greater, near the power supply pins.
