Overview
The Texas Instruments OPA187IDBVR is a precision operational amplifier from the OPAx187 series. This device is renowned for its low offset voltage and near-zero drift, making it ideal for high-precision applications. The OPA187IDBVR uses auto-zeroing techniques to achieve a low input offset voltage of ±1 µV and an offset drift of ±0.001 µV/°C. It is available in various packages, including microsize 8-pin VSSOP, 5-pin SOT-23, and 8-pin SOIC, ensuring versatility in design and implementation.
Key Specifications
| Parameter | Conditions | Min | Max | Unit | |
|---|---|---|---|---|---|
| Input Offset Voltage (VOS) | TA = –40°C to +125°C | ±1 | ±10 | ±15 | µV |
| Offset Drift | TA = –40°C to +125°C | ±0.001 | ±0.015 | µV/°C | |
| Power-Supply Rejection Ratio (PSRR) | VS = 4.5 V to 36 V, TA = –40°C to +125°C | ±0.01 | ±1 | µV/V | |
| Input Bias Current (IB) | VCM = VS / 2, TA = –40°C to +125°C | ±100 | ±350 | ±7.5 nA | pA |
| Input Offset Current (IOS) | VCM = VS / 2, TA = –40°C to +125°C | ±100 | ±500 | ±14.5 nA | pA |
| Input Voltage Noise (en) | f = 0.1 Hz to 10 Hz | 0.4 | µVPP | ||
| Input Voltage Noise Density | f = 1 kHz | 20 | nV/√Hz | ||
| Output Voltage Swing | VS = ±4 V to ±18 V, RL = 10 kΩ | 75 | 100 | mV | |
| Quiescent Current (IQ) | VS = ±4 V to ±18 V, IO = 0 mA | 100 | 145 | 150 | µA |
Key Features
- Low Offset Voltage and Drift: The OPA187IDBVR features an input offset voltage of ±1 µV and an offset drift of ±0.001 µV/°C, making it highly suitable for precision applications.
- Wide Supply Range: The device operates over a supply range of 4.5 V to 36 V (±2.25 V to ±18 V), providing flexibility in various power supply configurations.
- Low Power Consumption: With a quiescent current of 100 µA to 145 µA per amplifier, it is energy-efficient and suitable for battery-powered devices.
- High Common-Mode Rejection Ratio (CMRR): The CMRR is typically 114 dB to 137 dB, ensuring minimal interference from common-mode signals.
- Low Noise: The device has a low input voltage noise density of 20 nV/√Hz at 1 kHz, which is crucial for high-precision measurement and signal processing applications.
Applications
- Precision Measurement Instruments: Ideal for use in high-precision measurement instruments such as multimeters, oscilloscopes, and signal analyzers.
- Medical Devices: Suitable for medical devices requiring high accuracy and low noise, such as ECG and EEG machines.
- Aerospace and Defense: Used in various aerospace and defense applications where high precision and reliability are critical.
- Industrial Automation: Applied in industrial automation systems for precise control and measurement.
- Audio Equipment: Used in high-fidelity audio equipment to ensure low noise and high signal integrity.
Q & A
- What is the input offset voltage of the OPA187IDBVR?
The input offset voltage of the OPA187IDBVR is ±1 µV.
- What is the offset drift of the OPA187IDBVR?
The offset drift of the OPA187IDBVR is ±0.001 µV/°C.
- What is the supply voltage range for the OPA187IDBVR?
The OPA187IDBVR operates over a supply range of 4.5 V to 36 V (±2.25 V to ±18 V).
- What are the available package options for the OPA187IDBVR?
The OPA187IDBVR is available in 8-pin VSSOP, 5-pin SOT-23, and 8-pin SOIC packages.
- What is the quiescent current of the OPA187IDBVR?
The quiescent current of the OPA187IDBVR is 100 µA to 145 µA per amplifier.
- What is the common-mode rejection ratio (CMRR) of the OPA187IDBVR?
The CMRR of the OPA187IDBVR is typically 114 dB to 137 dB.
- What is the input voltage noise density of the OPA187IDBVR?
The input voltage noise density of the OPA187IDBVR is 20 nV/√Hz at 1 kHz.
- What are some typical applications of the OPA187IDBVR?
The OPA187IDBVR is typically used in precision measurement instruments, medical devices, aerospace and defense applications, industrial automation, and high-fidelity audio equipment.
- What is the operating temperature range of the OPA187IDBVR?
The OPA187IDBVR is specified for operation from –40°C to +125°C.
- How does the OPA187IDBVR handle capacitive loads?
The OPA187IDBVR can drive capacitive loads, and the specific capacitive load drive characteristics can be found in the typical characteristics section of the datasheet.
