Overview
The OPA380AIDRG4, produced by Texas Instruments, is a high-performance transimpedance amplifier that offers exceptional precision, high-speed operation, and excellent long-term stability. This amplifier is part of the OPA380 family, which is designed for applications requiring high accuracy and low noise. The OPA380AIDRG4 is particularly suited for high-speed photodiode applications, precision I/V conversion, and other demanding optical amplifier roles.
Key Specifications
| Parameter | Value |
|---|---|
| Package | 8-SOIC (0.154, 3.90mm Width), MSOP-8 |
| Operating Temperature Range | -40°C to 125°C |
| Gain Bandwidth Product (GBW) | 90MHz |
| Transimpedance Bandwidth | > 1MHz |
| Input Offset Voltage (Vos) | 25µV (max) |
| Offset Drift | 0.1µV/°C (max) |
| Bias Current | 50pA (max) |
| Dynamic Range | 4 to 5 Decades |
| Quiescent Current | 7.5mA |
| Supply Range | 2.7V to 5.5V |
| Power Supply Rejection Ratio (PSRR) | 112.4 dB |
| Common Mode Rejection Ratio | 100 dB |
Key Features
- High-speed operation with a gain bandwidth product of 90MHz and a transimpedance bandwidth of > 1MHz.
- Excellent long-term input voltage offset stability.
- Very low 1/f noise.
- Low input offset voltage of 25µV and low offset drift of 0.1µV/°C.
- Bias current as low as 50pA.
- Dynamic range of 4 to 5 decades, allowing measurement of signal currents from 1nA to 100µA.
- Quiescent current of 7.5mA and supply range from 2.7V to 5.5V.
- Available in single and dual versions with micro-size packages (MSOP-8 and SO-8).
- Optional external pull-down resistor to extend output voltage range to include 0V.
Applications
- Photodiode monitoring and precision I/V conversion.
- Optical amplifiers.
- CAT-scanner front-end applications.
- Fast control loops for power level on optical fibers.
Q & A
- What is the gain bandwidth product of the OPA380AIDRG4?
The gain bandwidth product (GBW) of the OPA380AIDRG4 is 90MHz.
- What is the typical transimpedance bandwidth of the OPA380AIDRG4?
The typical transimpedance bandwidth is greater than 1MHz.
- What is the input offset voltage of the OPA380AIDRG4?
The input offset voltage is 25µV (max).
- What is the bias current of the OPA380AIDRG4?
The bias current is 50pA (max).
- What is the dynamic range of the OPA380AIDRG4?
The dynamic range is 4 to 5 decades.
- What is the quiescent current of the OPA380AIDRG4?
The quiescent current is 7.5mA.
- What is the supply voltage range for the OPA380AIDRG4?
The supply voltage range is from 2.7V to 5.5V.
- In what packages is the OPA380AIDRG4 available?
The OPA380AIDRG4 is available in MSOP-8 and SO-8 packages.
- What are some common applications of the OPA380AIDRG4?
- How does the OPA380AIDRG4 handle long-term stability?
The OPA380AIDRG4 features excellent long-term input voltage offset stability, with a 300-hour life test at 150°C showing minimal variation.
