Overview
The OPA140AIDGKT is a single-channel, low-noise, 36-V JFET precision operational amplifier produced by Texas Instruments. It is part of the OPAx140 family, which includes the OPA140, OPA2140, and OPA4140. This device is known for its low-power consumption, good drift, and low input bias current, making it suitable for a wide range of precision analog applications. The OPA140AIDGKT operates with a single supply voltage from 4.5 V to 36 V or dual supplies from ±2.25 V to ±18 V, and it is fully specified from –40°C to +125°C, ensuring reliability in challenging environments.
Key Specifications
| Parameter | Min | Typ | Max | Unit |
|---|---|---|---|---|
| Offset Voltage (VOS) | 30 | 120 | 220 | µV |
| Offset Drift (dVOS/dT) | ±0.35 | 1.0 | - | µV/°C |
| Input Bias Current | - | - | 10 | pA |
| 1/f Noise (0.1 Hz to 10 Hz) | - | - | 250 | nV PP |
| Noise (5.1 nV/√Hz) | - | 5.1 | - | nV/√Hz |
| Slew Rate | - | 20 | - | V/µs |
| Quiescent Current (IQ) | 1.8 | 2.0 | 2.7 | mA |
| Unity-Gain Bandwidth | - | 11 | - | MHz |
| Operating Temperature Range | -40 | - | 125 | °C |
| Package | - | - | - | 8-pin VSSOP |
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
Applications
- Intra-dc interconnect (metro)
- Semiconductor test
- Chemistry and gas analyzers
- DC power supply, AC source, electronic load
- Data acquisition (DAQ) systems
- Lab and field instrumentation
- Battery-powered instruments
- Industrial controls
- Medical instrumentation
- Photodiode amplifiers
- Active filters
Q & A
- What is the typical quiescent current of the OPA140AIDGKT?
The typical quiescent current is 1.8 mA per amplifier.
- What is the slew rate of the OPA140AIDGKT?
The slew rate is 20 V/µs.
- What are the available package options for the OPA140?
The OPA140 is available in 5-pin SOT-23, 8-pin VSSOP, and 8-pin SOIC packages.
- What is the operating temperature range of the OPA140AIDGKT?
The operating temperature range is from –40°C to +125°C.
- Can the OPA140AIDGKT operate on a single supply or dual supplies?
Yes, it 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 unity-gain bandwidth of the OPA140AIDGKT?
The unity-gain bandwidth is 11 MHz.
- Does the OPA140AIDGKT have phase reversal?
No, the OPA140AIDGKT does not have phase reversal.
- What are some common applications of the OPA140AIDGKT?
Common applications include intra-dc interconnect, semiconductor test, chemistry and gas analyzers, DC power supply, AC source, electronic load, data acquisition systems, lab and field instrumentation, battery-powered instruments, industrial controls, and medical instrumentation.
- What is the input bias current of the OPA140AIDGKT?
The input bias current is 10 pA maximum.
- What is the noise performance of the OPA140AIDGKT?
The noise performance includes very-low 1/f noise of 250 nV PP from 0.1 Hz to 10 Hz and low noise of 5.1 nV/√ Hz.
