Overview
The OPA2188AIDGKT, produced by Texas Instruments, is a high-precision, dual-channel operational amplifier (op amp) that features TI's proprietary zero-drift technology. This device is designed to provide ultra-high precision in various high- and low-voltage supply applications. It is particularly suited for environments requiring minimal offset voltage drift and high system precision, such as test and measurement equipment, electronic weigh scales, medical instrumentation, and flow meters.
Key Specifications
| Parameter | Value | Unit |
|---|---|---|
| Offset Voltage | 25 μV (maximum) | μV |
| Offset Voltage Drift | 0.03 μV/°C | μV/°C |
| Bandwidth | 2 MHz | MHz |
| Quiescent Current | 475 μA (maximum) | μA |
| Noise | 8.8 nV/√Hz | nV/√Hz |
| Supply Voltage Range | ±2 V to ±18 V (4 V to 36 V) | V |
| Input Common Mode Range | From negative rail to within 1.5 V of the positive rail | V |
| Output Swing | Rail-to-rail output swing within 15 mV of the rails | mV |
| Operating Temperature Range | –40°C to +105°C | °C |
| Package | MSOP-8, SO-8 |
Key Features
- Zero Drift Architecture: Reduces the need for future system calibration with a drift of 0.03 μV/°C.
- Low Offset Voltage: Initial offset voltage of 25 μV enables high-resolution sensor measurements.
- High Bandwidth and Low Power: Provides 2 MHz of bandwidth while consuming only 475 μA of quiescent current.
- Low Noise: High system precision with a noise level of 8.8 nV/√Hz.
- Wide Supply Range: Operates from ±2 V to ±18 V (4 V to 36 V).
- Rail-to-Rail Output: Output swing within 15 mV of the rails.
- RFI Filtered Inputs: Enhanced immunity to radio-frequency interference.
- MicroSIZE Packages: Available in MSOP-8 and SO-8 packages.
Applications
- Test and Measurement Equipment: High precision requirements for accurate measurements.
- Electronic Weigh Scales: Precise weight measurements.
- Medical Instrumentation: Portable medical designs requiring high accuracy.
- Flow Meters: Accurate flow rate measurements.
- Bridge Amplifiers: High precision in bridge configurations.
- Strain Gauges: Precise strain measurements.
- Transducer Applications: High accuracy in transducer applications.
- Temperature Measurement: Precise temperature measurements.
- Resistance Temperature Detectors (RTDs): High accuracy in RTD applications.
- Precision Active Filters: High precision in active filter designs.
Q & A
- What is the key feature of the OPA2188AIDGKT's zero-drift architecture?
The zero-drift architecture reduces the need for future system calibration with a drift of 0.03 μV/°C. - What is the initial offset voltage of the OPA2188AIDGKT?
The initial offset voltage is 25 μV, enabling the highest-resolution sensor measurements in its class. - What is the bandwidth and quiescent current of the OPA2188AIDGKT?
The device provides 2 MHz of bandwidth while consuming only 475 μA of quiescent current. - What is the noise level of the OPA2188AIDGKT?
The noise level is 8.8 nV/√Hz, ensuring high system precision. - What is the supply voltage range of the OPA2188AIDGKT?
The device operates from ±2 V to ±18 V (4 V to 36 V). - What are the typical applications of the OPA2188AIDGKT?
Applications include test and measurement equipment, electronic weigh scales, medical instrumentation, flow meters, bridge amplifiers, strain gauges, transducer applications, temperature measurement, RTDs, and precision active filters. - What packages is the OPA2188AIDGKT available in?
The device is available in MSOP-8 and SO-8 packages. - What is the operating temperature range of the OPA2188AIDGKT?
The operating temperature range is –40°C to +105°C. - Does the OPA2188AIDGKT have RFI filtered inputs?
Yes, the device has RFI filtered inputs to enhance immunity to radio-frequency interference. - What is the output swing characteristic of the OPA2188AIDGKT?
The output swing is rail-to-rail within 15 mV of the rails.
