Overview
The OPA2182IDGKR is a high-precision operational amplifier produced by Texas Instruments. It belongs to the OPAx182 family, which includes the OPA182, OPA2182, and OPA4182. These devices are known for their ultra-low noise, zero-drift, and high precision, making them suitable for a wide range of applications requiring accurate and stable signal processing.
The OPA2182IDGKR features a unique MUX-friendly architecture and a controlled start-up system, ensuring robust performance and ease of use in various configurations. It offers rail-to-rail output operation and excellent AC performance, making it a versatile choice for different industrial and commercial applications.
Key Specifications
| Parameter | Test Conditions | Min | Max | Unit | |
|---|---|---|---|---|---|
| Input Offset Voltage (VOS) | TA = 25°C | ±0.45 | ±4 | ±4 | µV |
| Input Offset Voltage Drift (dVOS/dT) | TA = 0°C to 85°C | ±0.003 | ±0.012 | ±0.012 | µV/°C |
| Power-Supply Rejection Ratio (PSRR) | TA = –40°C to +125°C | ±0.005 | ±0.05 | ±0.05 | µV/V |
| Input Bias Current (IB) | ZIN = 100 kΩ || 500 pF, TA = 0°C to 85°C | ±50 | ±350 | ±350 | pA |
| Input Voltage Noise Density (en) | f = 1 kHz | 5.7 | nV/√Hz | ||
| Unity-Gain Bandwidth (UGB) | AV = 1 | 3.6 MHz | MHz | ||
| Slew Rate (SR) | Gain = 1, 10-V step | 10 V/µs | V/µs | ||
| Settling Time (tS) | To 0.01%, VS = ±18 V, gain = 1, 10-V step | 1.7 µs | µs | ||
| Quiescent Current (IQ) | VS = ±2.25 V to ±18 V, TA = 25°C | 0.85 | 1 | 1 | mA |
| Supply Voltage Range | ±2.25 V to ±18 V | V |
Key Features
- Ultra-high precision: Zero-drift of 0.003 µV/°C and ultra-low offset voltage of 4 µV (maximum).
- Excellent DC precision: Common-mode rejection ratio (CMRR) of 168 dB and open-loop gain of 170 dB.
- Low noise: Input voltage noise density of 5.7 nV/√Hz at 1 kHz and 0.1-Hz to 10-Hz noise of 0.12 µVPP.
- Excellent dynamic performance: Gain bandwidth of 5 MHz, slew rate of 10 V/µs, and fast settling time of 1.7 µs to 0.01% for a 10-V step.
- Robust design: MUX-friendly inputs and RFI and EMI filtered inputs.
- Wide supply range: Operates from ±2.25 V to ±18 V and 4.5 V to 36 V.
- Rail-to-rail output: Output voltage swing from rail to rail.
Applications
- Battery test: Suitable for precise battery testing and monitoring.
- DC power supply, AC source, electronic load: Used in power supply and load testing applications.
- Data acquisition (DAQ): Ideal for data acquisition systems requiring high precision and low noise.
- Semiconductor test: Used in testing and characterization of semiconductor devices).
- Weigh scale: Applied in precision weighing scales).
- Analog input module: Used in various analog input modules for industrial and commercial applications).
- Flow transmitter: Suitable for flow measurement and control systems).
Q & A
- What is the input offset voltage of the OPA2182IDGKR?
The input offset voltage is ±0.45 µV (minimum) and ±4 µV (maximum) at TA = 25°C).
- What is the input offset voltage drift of the OPA2182IDGKR?
The input offset voltage drift is ±0.003 µV/°C (minimum) and ±0.012 µV/°C (maximum) over the temperature range of 0°C to 85°C).
- What is the power-supply rejection ratio (PSRR) of the OPA2182IDGKR?
The PSRR is ±0.005 µV/V (minimum) and ±0.05 µV/V (maximum) over the temperature range of –40°C to +125°C).
- What is the input bias current of the OPA2182IDGKR?
The input bias current is ±50 pA (minimum) and ±350 pA (maximum) at TA = 0°C to 85°C).
- What is the input voltage noise density of the OPA2182IDGKR?
The input voltage noise density is 5.7 nV/√Hz at 1 kHz).
- What is the unity-gain bandwidth of the OPA2182IDGKR?
The unity-gain bandwidth is 3.6 MHz).
- What is the slew rate of the OPA2182IDGKR?
The slew rate is 10 V/µs for a gain of 1 and a 10-V step).
- What is the settling time of the OPA2182IDGKR?
The settling time to 0.01% is 1.7 µs for a 10-V step).
- What is the quiescent current of the OPA2182IDGKR?
The quiescent current is 0.85 mA (typical) at VS = ±2.25 V to ±18 V and TA = 25°C).
- What is the supply voltage range of the OPA2182IDGKR?
The supply voltage range is ±2.25 V to ±18 V and 4.5 V to 36 V).
