Overview
The OPA211AID is a precision operational amplifier (op-amp) produced by Texas Instruments. This device is part of the OPAx211 series, known for its extremely low voltage noise, high speed, and wide output swing. The OPA211AID is designed to achieve very low 1.1-nV/√Hz noise density with a supply current of only 3.6 mA, making it an excellent choice for applications requiring high accuracy and performance.
The amplifier offers rail-to-rail output swing, which maximizes dynamic range, and is suitable for various applications including precision instrumentation, data acquisition systems, and high-performance RF circuits.
Key Specifications
| Parameter | Value | Unit |
|---|---|---|
| Input Voltage Noise | 1.1 nV/√Hz at 1 kHz | nV/√Hz |
| Input Voltage Noise (0.1 to 10 Hz) | 80 nV PP | nV PP |
| THD + N | –136 dB (G = 1, ƒ = 1 kHz) | dB |
| Offset Voltage | 125 µV (maximum) | µV |
| Offset Voltage Drift | 0.35 µV/°C (typical) | µV/°C |
| Supply Current | 3.6 mA/Ch (typical) | mA/Ch |
| Gain Bandwidth Product | 80 MHz (G = 100), 45 MHz (G = 1) | MHz |
| Slew Rate | 27 V/µs | V/µs |
| 16-Bit Settling Time | 700 ns | ns |
| Supply Range | ±2.25 to ±18 V, 4.5 V to 36 V | V |
| Output Current | 30 mA | mA |
| Operating Temperature Range | –40°C to +125°C | °C |
| Package Types | SON-8, VSSOP-8, SOIC-8 |
Key Features
- Ultra-low input voltage noise: 1.1 nV/√Hz at 1 kHz and 80 nV PP (0.1 to 10 Hz)
- Low offset voltage: 125 µV (maximum) and low offset voltage drift: 0.35 µV/°C (typical)
- High-speed performance with a gain bandwidth product of 80 MHz (G = 100) and 45 MHz (G = 1)
- High slew rate: 27 V/µs and fast settling time: 700 ns to 16-bit accuracy
- Wide supply range: ±2.25 to ±18 V or 4.5 V to 36 V for single-supply operation
- Rail-to-rail output swing and output current up to 30 mA
- Unity-gain stable and low supply current: 3.6 mA/Ch (typical)
- Available in small packages: SON-8, VSSOP-8, and SOIC-8
Applications
- Precision instrumentation and sensor signal conditioning
- Data acquisition systems and high-precision analog-to-digital converters (ADCs) and digital-to-analog converters (DACs)
- Medical equipment, such as ultrasound scanners and X-ray systems
- Industrial control systems and lab and field instrumentation
- Audio equipment and high-performance RF circuits
- Wireless communications test and seismic data acquisition
- DC power supply, AC source, electronic load, and power analyzer applications
Q & A
- What is the input voltage noise of the OPA211AID?
The input voltage noise of the OPA211AID is 1.1 nV/√Hz at 1 kHz and 80 nV PP (0.1 to 10 Hz).
- What is the offset voltage and drift of the OPA211AID?
The offset voltage is 125 µV (maximum), and the offset voltage drift is 0.35 µV/°C (typical).
- What is the gain bandwidth product of the OPA211AID?
The gain bandwidth product is 80 MHz (G = 100) and 45 MHz (G = 1).
- What is the slew rate and settling time of the OPA211AID?
The slew rate is 27 V/µs, and the 16-bit settling time is 700 ns.
- What is the supply range and output current of the OPA211AID?
The supply range is ±2.25 to ±18 V or 4.5 V to 36 V, and the output current is up to 30 mA.
- In what packages is the OPA211AID available?
The OPA211AID is available in SON-8, VSSOP-8, and SOIC-8 packages.
- What are some common applications of the OPA211AID?
Common applications include precision instrumentation, data acquisition systems, medical equipment, industrial control systems, and high-performance RF circuits.
- What is the operating temperature range of the OPA211AID?
The operating temperature range is –40°C to +125°C.
- Is the OPA211AID unity-gain stable?
Yes, the OPA211AID is unity-gain stable.
- What is the typical supply current of the OPA211AID?
The typical supply current is 3.6 mA/Ch.
