Overview
The OPA2131UAE4 is a dual-channel, general-purpose, FET-input operational amplifier produced by Texas Instruments. This device is part of the OPAx131 series, known for its high performance at a low cost. The OPA2131 is particularly suited for applications requiring low offset voltage, low input bias current, and a wide supply voltage range.
The OPA2131UAE4 is available in an 8-pin SOIC package, making it a versatile choice for various analog circuit designs. Its FET input stage provides excellent input impedance and low input bias current, which is crucial for high-precision applications.
Key Specifications
| Parameter | Value | Unit |
|---|---|---|
| Number of Channels | 2 | |
| Input Bias Current (Max) | 50 | pA |
| Offset Voltage (Max) | 1 | mV |
| Offset Drift (Typ) | 2 | μV/°C |
| Common Mode Rejection Ratio (CMRR) (Typ) | 80 | dB |
| Gain Bandwidth Product (GBW) (Typ) | 4 | MHz |
| Slew Rate (Typ) | 10 | V/μs |
| Output Current (Typ) | 25 | mA |
| Total Supply Voltage Range | ±4.5V to ±18V | |
| Operating Temperature Range | -55°C to 125°C | |
| Package Type | SOIC-8 |
Key Features
- FET Input Stage: Provides low input bias current (50 pA max) and high input impedance.
- Low Offset Voltage: Maximum offset voltage of 1 mV and a typical offset drift of 2 μV/°C.
- Wide Supply Voltage Range: Operates from ±4.5V to ±18V, making it versatile for various applications.
- High Gain Bandwidth Product (GBW): 4 MHz, suitable for a wide range of analog signal processing tasks.
- High Slew Rate: 10 V/μs, ensuring fast response times in dynamic applications.
- Excellent Capacitive Load Drive: Capable of driving capacitive loads without oscillation.
- Dual Channel: Two independent operational amplifiers in a single package.
Applications
- Data Acquisition (DAQ): Suitable for precision data acquisition systems due to its low noise and high accuracy.
- Flow Transmitters: Used in industrial control systems for precise measurement and control.
- Lab and Field Instrumentation: Ideal for various laboratory and field instruments requiring high precision and reliability.
- Electrocardiogram (ECG) and Medical Devices: Its low noise and high CMRR make it suitable for medical applications such as ECGs.
Q & A
- What is the input bias current of the OPA2131UAE4?
The input bias current of the OPA2131UAE4 is 50 pA maximum.
- What is the typical offset voltage of the OPA2131UAE4?
The typical offset voltage is 1 mV.
- What is the gain bandwidth product (GBW) of the OPA2131UAE4?
The GBW is 4 MHz.
- What is the slew rate of the OPA2131UAE4?
The slew rate is 10 V/μs.
- What is the operating temperature range of the OPA2131UAE4?
The operating temperature range is -55°C to 125°C.
- What package type is the OPA2131UAE4 available in?
The OPA2131UAE4 is available in an 8-pin SOIC package.
- Is the OPA2131UAE4 RoHS compliant?
Yes, the OPA2131UAE4 is RoHS compliant.
- What are some common applications of the OPA2131UAE4?
Common applications include data acquisition, flow transmitters, lab and field instrumentation, and medical devices such as ECGs.
- What is the typical output current of the OPA2131UAE4?
The typical output current is 25 mA.
- What is the common mode rejection ratio (CMRR) of the OPA2131UAE4?
The typical CMRR is 80 dB.
