Overview
The OPA4188AIDR is a high-precision, low-noise operational amplifier produced by Texas Instruments. This device utilizes TI's proprietary auto-zeroing techniques to achieve a low offset voltage of 25 µV (maximum) and near zero-drift over time and temperature, with a drift of 0.03 µV/°C. The OPA4188AIDR is designed for precision and reliability, offering high input impedance and rail-to-rail output swing within 15 mV of the rails. It is suitable for a wide range of applications, including industrial control, data acquisition, medical instruments, and precision measurement devices. The amplifier operates over a wide supply range of ±2 V to ±18 V and is available in 14-pin SOIC and TSSOP packages, with an operating temperature range of –40°C to 125°C.
Key Specifications
| Parameter | Value | Unit |
|---|---|---|
| Offset Voltage (VOS) | 25 | µV |
| Offset Voltage Drift (dVOS/dT) | 0.03 | µV/°C |
| Noise Density | 8.8 | nV/√Hz |
| 0.1-Hz to 10-Hz Noise | 0.25 | µVPP |
| PSRR | 142 | dB |
| CMRR | 146 | dB |
| Open-Loop Gain (AOL) | 136 | dB |
| Gain Bandwidth (GBW) | 2 | MHz |
| Quiescent Current | 475 | µA |
| Supply Range | ±2 V to ±18 V | V |
| Output Voltage Swing | Within 15 mV of the rails | V |
| Operating Temperature Range | –40°C to 125°C | °C |
| Package | 14-pin SOIC, 14-pin TSSOP |
Key Features
- Low Offset Voltage: 25 µV (maximum)
- Zero-Drift: 0.03 µV/°C
- Low Noise: 8.8 nV/√Hz, 0.1-Hz to 10-Hz noise of 0.25 µVPP
- Excellent DC Precision: PSRR of 142 dB, CMRR of 146 dB, and open-loop gain of 136 dB
- Gain Bandwidth: 2 MHz
- Quiescent Current: 475 µA (maximum)
- Wide Supply Range: ±2 V to ±18 V
- Rail-to-Rail Output: Output swing within 15 mV of the rails
- RFI Filtered Inputs: Reduces radio-frequency interference
- MicroSIZE Packages: Available in 14-pin SOIC and TSSOP packages
Applications
- Industrial Control Systems: Suitable for precision control and measurement applications
- Data Acquisition: Ideal for precise signal amplification and filtering
- Medical Instruments: Used in medical devices requiring high precision and low noise
- Precision Measurement Devices: Applicable in various precision measurement applications
- Bridge Amplifiers: Used in bridge configurations for strain gauges and transducers
- Test Equipment: Suitable for test and measurement equipment requiring high precision
- Temperature Measurement: Used in temperature measurement applications
- Electronic Scales: Applied in electronic scales for precise weight measurement
- Resistance Temperature Detectors (RTDs): Used in RTD applications
- Precision Active Filters: Ideal for active filter circuits requiring high precision
Q & A
- What is the maximum offset voltage of the OPA4188AIDR?
The maximum offset voltage of the OPA4188AIDR is 25 µV.
- What is the drift rate of the OPA4188AIDR over temperature?
The drift rate of the OPA4188AIDR is 0.03 µV/°C.
- What is the noise density of the OPA4188AIDR?
The noise density of the OPA4188AIDR is 8.8 nV/√Hz.
- What is the gain bandwidth product of the OPA4188AIDR?
The gain bandwidth product of the OPA4188AIDR is 2 MHz.
- What is the quiescent current of the OPA4188AIDR?
The quiescent current of the OPA4188AIDR is 475 µA (maximum).
- What is the supply voltage range for the OPA4188AIDR?
The supply voltage range for the OPA4188AIDR is ±2 V to ±18 V.
- Does the OPA4188AIDR have rail-to-rail output capability?
Yes, the OPA4188AIDR has rail-to-rail output capability, with the output swing within 15 mV of the rails.
- What are the available package types for the OPA4188AIDR?
The OPA4188AIDR is available in 14-pin SOIC and 14-pin TSSOP packages.
- What is the operating temperature range of the OPA4188AIDR?
The operating temperature range of the OPA4188AIDR is –40°C to 125°C.
- What are some common applications of the OPA4188AIDR?
The OPA4188AIDR is commonly used in industrial control systems, data acquisition, medical instruments, precision measurement devices, and other applications requiring high precision and low noise.
