Overview
The OPA188AIDBVR 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, high input impedance, and a wide supply range. The OPA188 is available in various MicroSIZE packages, including SOT-23-5, MSOP-8, and SO-8, and is specified for operation from –40°C to +125°C.
Key Specifications
| Parameter | Value | Unit |
|---|---|---|
| Input Offset Voltage | 25 | μV |
| Offset Voltage Drift | 0.03 | μV/°C |
| Input Voltage Noise | 8.8 | nV/√Hz (1 kHz) |
| 0.1-Hz to 10-Hz Noise | 0.25 | μVPP |
| Power Supply Rejection Ratio (PSRR) | 142 | dB |
| Common-Mode Rejection Ratio (CMRR) | 146 | dB |
| Open-Loop Gain (AOL) | 136 | dB |
| Gain Bandwidth Product (GBW) | 2 | MHz |
| Quiescent Current | 510 | μA (Maximum) |
| Supply Voltage Range | ±2 V to ±18 V | V |
| Operating Temperature Range | –40°C to +125°C | °C |
| Output Voltage Swing | Within 15 mV of the rails | V |
Key Features
- Low offset voltage: 25 μV (maximum)
- Zero drift: 0.03 μV/°C
- Low noise: 8.8 nV/√Hz at 1 kHz
- Excellent DC precision: PSRR of 142 dB, CMRR of 146 dB, and AOL of 136 dB
- Gain bandwidth product: 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 (SOT-23-5, MSOP-8, SO-8)
Applications
- Weight scales
- Analog input modules
- Flow transmitters
- Battery testing
- DC power supplies and AC sources
- Electronic loads
- Data acquisition (DAQ) systems
- Semiconductor testing
Q & A
- What is the maximum input offset voltage of the OPA188?
The maximum input offset voltage of the OPA188 is 25 μV.
- What is the temperature drift of the OPA188?
The temperature drift of the OPA188 is 0.03 μV/°C.
- What is the noise performance of the OPA188?
The OPA188 has an input voltage noise of 8.8 nV/√Hz at 1 kHz and 0.25 μVPP from 0.1 Hz to 10 Hz.
- What is the power supply rejection ratio (PSRR) of the OPA188?
The PSRR of the OPA188 is 142 dB.
- What is the common-mode rejection ratio (CMRR) of the OPA188?
The CMRR of the OPA188 is 146 dB.
- What is the gain bandwidth product (GBW) of the OPA188?
The GBW of the OPA188 is 2 MHz.
- What is the quiescent current of the OPA188?
The maximum quiescent current of the OPA188 is 510 μA.
- What is the supply voltage range of the OPA188?
The supply voltage range of the OPA188 is ±2 V to ±18 V.
- What are the available package options for the OPA188?
The OPA188 is available in MicroSIZE packages including SOT-23-5, MSOP-8, and SO-8.
- What is the operating temperature range of the OPA188?
The operating temperature range of the OPA188 is –40°C to +125°C.
- What are some typical applications of the OPA188?
The OPA188 is typically used in weight scales, analog input modules, flow transmitters, battery testing, DC power supplies, and data acquisition systems among others.
