Overview
The OPA2140AIDGKT is a dual-channel, low-noise operational amplifier from Texas Instruments. It belongs to the OPAx140 family, which includes the OPA140, OPA2140, and OPA4140. These amplifiers are known for their low power consumption, very low offset drift, and low input bias current, making them suitable for a variety of precision analog applications. The OPA2140AIDGKT operates with a single supply voltage from 4.5 V to 36 V or dual supplies from ±2.25 V to ±18 V and is fully specified from –40°C to +125°C, ensuring reliability in challenging environments.
Key Specifications
| Parameter | Minimum | Typical | Maximum | Unit |
|---|---|---|---|---|
| Input Offset Voltage (VOS) | ±30 | ±120 | ±220 | μV |
| Input Offset Voltage Drift (dVOS/dT) | ±0.35 | ±1 | μV/°C | |
| Input Bias Current (IB) | ±0.5 | ±10 | pA | |
| Power Supply Rejection Ratio (PSRR) | 0.1 | 0.5 | μV/V | |
| Quiescent Current per Amplifier (IQ) | 1.8 | 2 | 2.7 | mA |
| Slew Rate (SR) | 20 | V/μs | ||
| Gain Bandwidth Product (BW) | 11 | MHz | ||
| Supply Voltage (VS) | 4.5 | 36 | V (Single Supply) | |
| Supply Voltage (VS) | ±2.25 | ±18 | V (Dual Supply) | |
| Operating Temperature Range | –40 | +125 | °C |
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 nVPP, 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
- Packages: Industry-standard SOIC, SON, SOT-23, TSSOP, and VSSOP
Applications
- Intra-dc interconnect (metro)
- Semiconductor test
- Chemistry and gas analyzers
- DC power supply, AC source, electronic load
- Precision analog-to-digital converters (ADCs) and digital-to-analog converters (DACs)
Q & A
- What is the input offset voltage of the OPA2140AIDGKT? The input offset voltage is ±120 μV.
- What is the slew rate of the OPA2140AIDGKT? The slew rate is 20 V/μs.
- What are the supply voltage ranges for the OPA2140AIDGKT? The device can operate with a single supply from 4.5 V to 36 V or dual supplies from ±2.25 V to ±18 V.
- What is the typical quiescent current per amplifier for the OPA2140AIDGKT? The typical quiescent current per amplifier is 1.8 mA.
- What are the available packages for the OPA2140AIDGKT? The device is available in 8-pin SOIC, 8-pin VSSOP, and 8-pin SON packages.
- What is the operating temperature range for the OPA2140AIDGKT? The operating temperature range is from –40°C to +125°C.
- What is the gain bandwidth product of the OPA2140AIDGKT? The gain bandwidth product is 11 MHz.
- Does the OPA2140AIDGKT have phase reversal? No, the OPA2140AIDGKT does not have phase reversal.
- What are some typical applications for the OPA2140AIDGKT? Typical applications include intra-dc interconnect, semiconductor test, chemistry and gas analyzers, and precision ADCs and DACs.
- What is the input bias current of the OPA2140AIDGKT? The input bias current is 10 pA maximum.
