Overview
The OPA2131UAG4, produced by Texas Instruments, is part of the OPAx131 series of FET-input operational amplifiers. This dual-channel op-amp is designed to provide high performance at a low cost, making it an excellent choice for a wide range of general-purpose applications. The OPA2131UAG4 is available in an 8-pin SOIC package and offers features such as low offset voltage, wide supply range, and high slew rate, making it suitable for various industrial and medical applications.
Key Specifications
| Parameter | Min | Typ | Max | Unit |
|---|---|---|---|---|
| Input Offset Voltage (VOS) | ±0.2 | - | ±1.5 | mV |
| Input Offset Voltage Drift (dVOS/dT) | ±2 | - | ±10 | μV/°C |
| Power-Supply Rejection Ratio (PSRR) | ±50 | - | ±200 | μV/V |
| Input Bias Current (IB) | ±5 | - | ±50 | pA |
| Common-Mode Voltage Range (VCM) | (V–) + 3 | - | (V+) – 3.5 | V |
| Common-Mode Rejection Ratio (CMRR) | 70 | - | 80 | dB |
| Open-Loop Voltage Gain (AOL) | 94 | - | 110 | dB |
| Gain Bandwidth Product (GBW) | - | - | 4 | MHz |
| Slew Rate (SR) | - | - | 10 | V/μs |
| Supply Voltage Range | ±4.5 | - | ±18 | V |
| Operating Temperature Range | -40 | - | +85 | °C |
Key Features
- FET input with low input bias current (IB = 50pA max)
- Low offset voltage (±0.2mV to ±1.5mV)
- Wide supply range (±4.5V to ±18V)
- High slew rate (10V/μs)
- Wide bandwidth (4MHz)
- Excellent capacitive load drive
- Unity-gain stable
- No phase-reversal of the output when the input common-mode voltage range is exceeded
Applications
- Data acquisition (DAQ)
- Flow transmitter
- Lab and field instrumentation
- Electrocardiogram (ECG)
- General-purpose amplification in various industrial and medical devices
Q & A
- What is the input offset voltage of the OPA2131UAG4? The input offset voltage is ±0.2mV to ±1.5mV.
- What is the slew rate of the OPA2131UAG4? The slew rate is 10V/μs.
- What is the gain bandwidth product of the OPA2131UAG4? The gain bandwidth product is 4MHz.
- What is the common-mode rejection ratio of the OPA2131UAG4? The common-mode rejection ratio is 70dB to 80dB.
- Is the OPA2131UAG4 unity-gain stable? Yes, the OPA2131UAG4 is unity-gain stable.
- What are the typical applications of the OPA2131UAG4? Typical applications include data acquisition, flow transmitters, lab and field instrumentation, and electrocardiograms.
- What is the operating temperature range of the OPA2131UAG4? The operating temperature range is -40°C to +85°C.
- What is the supply voltage range for the OPA2131UAG4? The supply voltage range is ±4.5V to ±18V.
- Does the OPA2131UAG4 exhibit phase-reversal of the output? No, the OPA2131UAG4 does not exhibit phase-reversal of the output when the input common-mode voltage range is exceeded.
- What package types are available for the OPA2131UAG4? The OPA2131UAG4 is available in an 8-pin SOIC package.
