Overview
The OPA2140AID is a dual-channel, low-noise operational amplifier (op amp) produced by Texas Instruments. It belongs to the OPAx140 family, which includes the OPA140, OPA2140, and OPA4140. This device is designed as a low-power JFET input amplifier, featuring excellent drift and low input bias current. The OPA2140AID is particularly notable for its rail-to-rail output swing and input range that includes the negative supply voltage, making it suitable for interfacing with modern single-supply precision analog-to-digital converters (ADCs) and digital-to-analog converters (DACs).
Key Specifications
| Parameter | Value | Unit |
|---|---|---|
| Number of Channels | 2 | |
| Package Type | SOIC (D) | |
| Pins | 8 | |
| Operating Temperature Range | -40 to 125 | °C |
| Unity-Gain Bandwidth | 11 MHz | |
| Slew Rate | 20 V/µs | |
| Input Bias Current | 10 pA (max) | |
| Offset Voltage | 120 µV (max) | |
| Offset Drift | 1 µV/°C (max) | |
| Low Noise | 5.1 nV/√Hz | |
| 1/f Noise | 250 nV PP, 0.1 Hz to 10 Hz | |
| Supply Voltage (Single) | 4.5 V to 36 V | |
| Supply Voltage (Dual) | ±2.25 V to ±18 V | |
| Quiescent Current per Channel | 2 mA (max), 1.8 mA (typ) |
Key Features
- Very-low offset drift: 1 µV/°C maximum
- Very-low offset: 120 µV
- Low input bias current: 10 pA maximum
- Very-low 1/f noise: 250 nV PP, 0.1 Hz to 10 Hz
- Low noise: 5.1 nV/√Hz
- Slew rate: 20 V/µs
- Low supply current: 2 mA maximum
- Input voltage range includes V– supply
- Single-supply operation: 4.5 V to 36 V
- Dual-supply operation: ±2.25 V to ±18 V
- No phase reversal
- Rail-to-rail output swing
- Available in industry-standard SOIC, SON, SOT-23, TSSOP, and VSSOP packages
Applications
- Intra-dc interconnect (metro)
- Semiconductor test
- Chemistry and gas analyzers
- DC power supply, AC source, electronic load
- Data acquisition (DAQ)
- Lab and field instrumentation
Q & A
- What is the unity-gain bandwidth of the OPA2140AID? The unity-gain bandwidth of the OPA2140AID is 11 MHz.
- What is the slew rate of the OPA2140AID? The slew rate of the OPA2140AID is 20 V/µs.
- What is the input bias current of the OPA2140AID? The input bias current of the OPA2140AID is 10 pA maximum.
- What is the offset voltage of the OPA2140AID? The offset voltage of the OPA2140AID is 120 µV maximum.
- What is the operating temperature range of the OPA2140AID? The operating temperature range of the OPA2140AID is -40°C to 125°C.
- What are the supply voltage ranges for the OPA2140AID? The OPA2140AID can operate on a single supply from 4.5 V to 36 V or dual supplies from ±2.25 V to ±18 V.
- What is the quiescent current per channel for the OPA2140AID? The quiescent current per channel for the OPA2140AID is 2 mA maximum and 1.8 mA typical.
- Does the OPA2140AID have rail-to-rail output swing? Yes, the OPA2140AID has rail-to-rail output swing.
- What are some common applications of the OPA2140AID? Common applications include intra-dc interconnect, semiconductor test, chemistry and gas analyzers, DC power supply, AC source, electronic load, data acquisition (DAQ), and lab and field instrumentation.
- In what packages is the OPA2140AID available? The OPA2140AID is available in industry-standard SOIC, SON, VSSOP packages.
