Overview
The OPA2381AIDGKR, produced by Texas Instruments, is a precision, low-power transimpedance amplifier. It is part of the OPA381 family, known for its high precision, excellent long-term stability, and very low 1/f noise. This amplifier is particularly suited for applications requiring high accuracy and wide bandwidth, such as precision I/V conversion, photodiode monitoring, and optical amplifiers. The OPA2381AIDGKR is available in a VSSOP (DGK) package with 8 pins and operates over a temperature range of -40°C to +125°C.
Key Specifications
| Parameter | Value | Units |
|---|---|---|
| Gain Bandwidth (GBW) | 18 | MHz |
| Transimpedance Bandwidth | > 250 | kHz |
| Dynamic Range | 5 | Decades |
| Low Voltage Noise | 10 | nV/√Hz |
| Bias Current | 3 | pA |
| Offset Voltage | 25 | µV (max) |
| Offset Drift | 0.1 | µV/°C (max) |
| Quiescent Current | 800 | µA |
| Supply Range | 2.7 to 5.5 | V |
| Package | VSSOP (DGK), MSOP-8, DFN-8 | |
| Operating Temperature Range | -40 to +125 | °C |
Key Features
- Over 250kHz transimpedance bandwidth
- Dynamic range of 5 decades
- Excellent long-term stability
- Low voltage noise: 10nV/√Hz
- Bias current: 3pA
- Offset voltage: 25µV (max)
- Offset drift: 0.1µV/°C (max)
- Gain bandwidth: 18MHz
- Quiescent current: 800µA
- Fast overload recovery
- Supply range: 2.7V to 5.5V
- Single and dual versions available
- Micro packages: DFN-8, MSOP-8
Applications
- Precision I/V conversion
- Photodiode monitoring
- Optical amplifiers
- CAT-scanner front-end
- Photo lab equipment
Q & A
- What is the gain bandwidth of the OPA2381AIDGKR?
The gain bandwidth of the OPA2381AIDGKR is 18MHz. - What is the transimpedance bandwidth of the OPA2381AIDGKR?
The transimpedance bandwidth of the OPA2381AIDGKR is over 250kHz. - What is the dynamic range of the OPA2381AIDGKR?
The dynamic range of the OPA2381AIDGKR is 5 decades. - What is the low voltage noise of the OPA2381AIDGKR?
The low voltage noise of the OPA2381AIDGKR is 10nV/√Hz. - What is the bias current of the OPA2381AIDGKR?
The bias current of the OPA2381AIDGKR is 3pA. - What is the offset voltage of the OPA2381AIDGKR?
The offset voltage of the OPA2381AIDGKR is 25µV (max). - What is the offset drift of the OPA2381AIDGKR?
The offset drift of the OPA2381AIDGKR is 0.1µV/°C (max). - What is the quiescent current of the OPA2381AIDGKR?
The quiescent current of the OPA2381AIDGKR is 800µA. - What is the supply range of the OPA2381AIDGKR?
The supply range of the OPA2381AIDGKR is 2.7V to 5.5V. - In what packages is the OPA2381AIDGKR available?
The OPA2381AIDGKR is available in VSSOP (DGK), MSOP-8, and DFN-8 packages.
