Overview
The OPA445APG4 is a high-voltage FET-input operational amplifier produced by Texas Instruments. This monolithic operational amplifier is designed to operate from power supplies up to ±45V, providing output currents of up to 15mA. It is particularly useful in applications requiring high output voltage or large common-mode voltage swings. The OPA445APG4 features a high slew rate of 15V/µs, which ensures a wide power-bandwidth response, making it suitable for various high-voltage applications. The FET input circuitry allows the use of high-impedance feedback networks, minimizing output loading effects. Additionally, laser trimming of the input circuitry results in low input offset voltage and drift.
Key Specifications
| Attribute Name | Attribute Value |
|---|---|
| Manufacturer | Texas Instruments |
| Amplifier Type | General Purpose |
| Number of Circuits | 1 |
| Slew Rate | 15V/µs |
| Gain Bandwidth Product | 2 MHz |
| Current - Input Bias | 10 pA |
| Voltage - Input Offset | 1.5 mV |
| Current - Supply | 4.2 mA |
| Current - Output / Channel | 15 mA |
| Voltage - Supply Span (Min) | 20 V |
| Voltage - Supply Span (Max) | 90 V |
| Operating Temperature | -25°C to 85°C |
| Mounting Type | Through Hole |
| Package / Case | 8-DIP (0.300", 7.62mm) |
| CMRR (Typ) | 95 dB |
| Offset Drift (Typ) | 10 µV/°C |
Key Features
- Wide Power Supply Range: Operates from ±10V to ±45V, with a total supply voltage range of 20V to 90V.
- High Slew Rate: 15V/µs, providing wide power-bandwidth response.
- Low Input Bias Current: 10 pA, suitable for high-impedance feedback networks.
- Low Input Offset Voltage and Drift: Achieved through laser trimming of the input circuitry.
- Standard Pinout Packages: Available in TO-99, DIP-8, SO-8, and SO-8 PowerPAD surface-mount packages.
- High Operating Temperature Range: Fully specified from -25°C to 85°C and operates from -55°C to 125°C.
Applications
- Test Equipment: Suitable for various test and measurement applications.
- High-Voltage Regulators: Ideal for high-voltage regulation due to its wide power supply range.
- Power Amplifiers: Used in power amplifier circuits requiring high output voltage.
- Data Acquisition: Applicable in data acquisition systems needing high accuracy and stability.
- Signal Conditioning: Useful in signal conditioning circuits where high slew rates are necessary.
- Audio: Can be used in audio applications requiring high fidelity and low distortion.
- Piezo Drivers: Suitable for driving piezoelectric devices due to its high voltage capabilities.
Q & A
- What is the maximum power supply voltage for the OPA445APG4?
The OPA445APG4 can operate from power supplies up to ±45V, with a total supply voltage range of 90V.
- What is the slew rate of the OPA445APG4?
The slew rate of the OPA445APG4 is 15V/µs.
- What is the input bias current of the OPA445APG4?
The input bias current of the OPA445APG4 is 10 pA.
- What are the typical operating temperatures for the OPA445APG4?
The OPA445APG4 is fully specified from -25°C to 85°C and operates from -55°C to 125°C.
- What types of packages are available for the OPA445APG4?
The OPA445APG4 is available in TO-99, DIP-8, SO-8, and SO-8 PowerPAD surface-mount packages.
- What is the gain bandwidth product of the OPA445APG4?
The gain bandwidth product of the OPA445APG4 is 2 MHz.
- What is the typical output current per channel for the OPA445APG4?
The typical output current per channel for the OPA445APG4 is 15 mA.
- Is the OPA445APG4 RoHS compliant?
- What are some common applications for the OPA445APG4?
- What is the CMRR (Common Mode Rejection Ratio) of the OPA445APG4?
