Overview
The OPA188AIDGKR is a precision, low-noise, rail-to-rail output operational amplifier produced by Texas Instruments. This device utilizes TI's proprietary auto-zeroing techniques to achieve low offset voltage and near zero-drift over time and temperature. It is designed for high-precision applications, offering excellent DC precision, low quiescent current, and a wide supply range. The OPA188 is available in various packages, including the 8-pin VSSOP package for the OPA188AIDGKR variant.
Key Specifications
| Parameter | Value | Unit |
|---|---|---|
| Offset Voltage | 25 | μV (maximum) |
| Zero Drift | 0.03 | μV/°C |
| Noise (0.1 Hz to 10 Hz) | 0.25 | μVPP |
| Noise (8.8 nV/√Hz) | 8.8 | nV/√Hz |
| PSRR | 142 | dB |
| CMRR | 146 | dB |
| Open-loop Gain | 136 | dB |
| Gain Bandwidth | 2 | MHz |
| Quiescent Current | 510 | μA (maximum) |
| Supply Range | ±2 V to ±18 V | V |
| Output Swing | Within 15 mV of the rails | V |
| Operating Temperature Range | -40°C to +125°C | °C |
| Package Type | 8-pin VSSOP |
Key Features
- Low offset voltage: 25 μV (maximum)
- Zero drift: 0.03 μV/°C
- Low noise: 8.8 nV/√Hz and 0.25 μVPP (0.1 Hz to 10 Hz)
- Excellent DC precision: High PSRR (142 dB), CMRR (146 dB), and open-loop gain (136 dB)
- Gain bandwidth: 2 MHz
- Quiescent current: 510 μA (maximum)
- Wide supply range: ±2 V to ±18 V
- Rail-to-rail output
- Input includes negative rail
- RFI filtered inputs
- MicroSIZE packages (e.g., SOT-23, MSOP-8, SO-8)
Applications
- Weight scales
- Analog input modules
- Flow transmitters
- Battery testing
- DC power supplies, AC sources, electronic loads
- Data acquisition (DAQ) systems
- Semiconductor testing
Q & A
- What is the maximum offset voltage of the OPA188?
The maximum offset voltage of the OPA188 is 25 μV.
- What is the zero drift of the OPA188?
The zero drift of the OPA188 is 0.03 μV/°C.
- What is the noise performance of the OPA188?
The OPA188 has a noise of 8.8 nV/√Hz and 0.25 μVPP from 0.1 Hz to 10 Hz.
- What is the gain bandwidth of the OPA188?
The gain bandwidth of the OPA188 is 2 MHz.
- What is the quiescent current of the OPA188?
The quiescent current of the OPA188 is 510 μA (maximum).
- What is the supply range of the OPA188?
The supply range of the OPA188 is ±2 V to ±18 V.
- Does the OPA188 have rail-to-rail output?
Yes, the OPA188 has rail-to-rail output.
- What are some common applications of the OPA188?
The OPA188 is commonly used in weight scales, analog input modules, flow transmitters, battery testing, DC power supplies, AC sources, electronic loads, data acquisition systems, and semiconductor testing.
- What is the operating temperature range of the OPA188?
The operating temperature range of the OPA188 is -40°C to +125°C.
- In what packages is the OPA188 available?
The OPA188 is available in various packages, including SOT-23, MSOP-8, SO-8, and VSSOP.
