Overview
The OPA2180IDR is a high-precision, dual-channel operational amplifier (op amp) produced by Texas Instruments. It utilizes TI's proprietary zero-drift techniques to provide low offset voltage and near zero-drift over time and temperature. This op amp is designed for applications requiring high precision and low noise, offering a wide supply range and rail-to-rail output swing. The OPA2180IDR is available in an 8-pin SOIC (D) package and operates over a temperature range of –40°C to +105°C.
Key Specifications
| Parameter | Value | Unit |
|---|---|---|
| Package | SOIC (D) | - |
| Pins | 8 | - |
| Operating Temperature Range | –40 to 105 | °C |
| Offset Voltage | 75 µV (Maximum) | µV |
| Drift | 0.1 µV/°C | µV/°C |
| Noise | 10 nV/√Hz | nV/√Hz |
| Bandwidth | 2 MHz | MHz |
| Slew Rate | 0.8 V/µs | V/µs |
| Supply Voltage Range | ±2 V to ±18 V (4 V to 36 V) | V |
| Quiescent Current | 525 µA (Maximum) | µA |
| PSRR | 126 dB | dB |
| CMRR | 114 dB | dB |
| Open-Loop Gain (AOL) | 120 dB | dB |
| Bias Current | 250 pA (Typical) | pA |
Key Features
- Low Offset Voltage: 75 µV (Maximum)
- Zero-Drift: 0.1 µV/°C
- Low Noise: 10 nV/√Hz and very low 1/f noise
- Excellent DC Precision: High PSRR (126 dB) and CMRR (114 dB)
- Wide Supply Range: ±2 V to ±18 V (4 V to 36 V)
- Rail-to-Rail Output: Includes negative rail
- Low Bias Current: 250 pA (Typical)
- RFI Filtered Inputs
- MicroSIZE Packages: Available in SOIC-8 and VSSOP-8 packages
Applications
- Bridge Amplifiers
- Strain Gauges
- Test Equipment
- Transducer Applications
- Temperature Measurement
- Electronic Scales
- Medical Instrumentation
- Resistor Thermal Detectors
- Precision Active Filters
Q & A
- What is the maximum offset voltage of the OPA2180IDR?
The maximum offset voltage is 75 µV.
- What is the drift specification of the OPA2180IDR?
The drift is 0.1 µV/°C.
- What is the noise performance of the OPA2180IDR?
The noise is 10 nV/√Hz with very low 1/f noise.
- What is the bandwidth of the OPA2180IDR?
The bandwidth is 2 MHz.
- What is the slew rate of the OPA2180IDR?
The slew rate is 0.8 V/µs.
- What is the supply voltage range for the OPA2180IDR?
The supply voltage range is ±2 V to ±18 V (4 V to 36 V).
- What is the quiescent current of the OPA2180IDR?
The quiescent current is 525 µA (Maximum).
- What are the PSRR and CMRR specifications of the OPA2180IDR?
The PSRR is 126 dB and the CMRR is 114 dB.
- What is the typical bias current of the OPA2180IDR?
The typical bias current is 250 pA.
- In what packages is the OPA2180IDR available?
The OPA2180IDR is available in SOIC-8 and VSSOP-8 packages.
