Overview
The OPA211IDR, produced by Texas Instruments, is a precision operational amplifier known for its exceptionally low noise and high performance. This device is part of the OPAx211 series, which achieves a very low 1.1 nV/√Hz noise density at 1 kHz, making it ideal for applications requiring high precision and low noise. The OPA211IDR operates with a supply current of only 3.6 mA and is available in small packages such as the SON-8 (3 mm × 3 mm), VSSOP-8, and SOIC-8, enhancing its suitability for space-constrained designs.
Key Specifications
| Parameter | Value | Unit |
|---|---|---|
| Input Voltage Noise Density | 1.1 | nV/√Hz at 1 kHz |
| Gain Bandwidth Product | 80 MHz (G = 100), 45 MHz (G = 1) | MHz |
| Slew Rate | 27 | V/μs |
| Settling Time (16-bit accuracy) | 700 ns | ns |
| Supply Voltage Range | ±2.25 to ±18 V, 4.5 V to 36 V | V |
| Output Current | 30 mA | mA |
| Input Offset Voltage | ±20 to ±50 μV | μV |
| Input Offset Drift | ±0.35 to ±1.5 μV/°C | μV/°C |
| Common-Mode Rejection Ratio (CMRR) | 114 to 120 dB | dB |
| Open-Loop Gain | 114 to 130 dB | dB |
| Operating Temperature Range | –40°C to +125°C | °C |
Key Features
- Low Noise: 1.1 nV/√Hz noise density at 1 kHz, making it suitable for high-precision applications.
- Low Power: Operates with a supply current of only 3.6 mA.
- Rail-to-Rail Output: Maximizes dynamic range.
- High Speed: Gain bandwidth product of 80 MHz (G = 100) and 45 MHz (G = 1), with a slew rate of 27 V/μs.
- Wide Supply Range: Specified over a wide dual-power supply range of ±2.25 to ±18 V, or for single-supply operation from 4.5 to 36 V.
- Compact Packages: Available in SON-8 (3 mm × 3 mm), VSSOP-8, and SOIC-8 packages.
- Shutdown Function: Active high shutdown pin for power management.
Applications
- Ultrasound Scanners: High precision and low noise make it ideal for medical imaging applications.
- Semiconductor Test: Suitable for precise signal processing in semiconductor testing equipment.
- X-ray Systems: Used in medical imaging systems requiring high accuracy and low noise.
- Lab and Field Instrumentation: Ideal for various measurement and data acquisition systems.
- Data Acquisition (DAQ): High precision and low noise make it suitable for DAQ systems.
- Radar and Wireless Communications Test: Used in signal processing for radar and wireless communication testing.
- Seismic Data Acquisition: Suitable for seismic data acquisition due to its high precision and stability.
- DC Power Supply, AC Source, Electronic Load: Used in power supply and electronic load applications requiring precision.
- Power Analyzer and Source Measurement Unit (SMU): Ideal for precise measurement and control in power analysis and SMU applications.
Q & A
- What is the input voltage noise density of the OPA211IDR?
The input voltage noise density of the OPA211IDR is 1.1 nV/√Hz at 1 kHz.
- What is the gain bandwidth product of the OPA211IDR?
The gain bandwidth product is 80 MHz (G = 100) and 45 MHz (G = 1).
- What is the slew rate of the OPA211IDR?
The slew rate is 27 V/μs.
- What is the settling time for 16-bit accuracy?
The settling time for 16-bit accuracy is 700 ns.
- What is the supply voltage range for the OPA211IDR?
The supply voltage range is ±2.25 to ±18 V, or for single-supply operation from 4.5 to 36 V.
- What is the output current capability of the OPA211IDR?
The output current capability is 30 mA.
- What are the typical packages available for the OPA211IDR?
The OPA211IDR is available in SON-8 (3 mm × 3 mm), VSSOP-8, and SOIC-8 packages.
- Does the OPA211IDR have a shutdown function?
Yes, the OPA211IDR has an active high shutdown pin for power management.
- What are some common applications of the OPA211IDR?
Common applications include ultrasound scanners, semiconductor test, X-ray systems, lab and field instrumentation, data acquisition (DAQ), radar, wireless communications test, seismic data acquisition, DC power supply, AC source, electronic load, power analyzer, and source measurement unit (SMU).
- What is the operating temperature range of the OPA211IDR?
The operating temperature range is –40°C to +125°C.
