Overview
The OPA2211AIDRGT is a precision operational amplifier from Texas Instruments, part of the OPAx211 series. This device is renowned for its extremely low voltage noise of 1.1 nV/√Hz at 1 kHz and high-speed performance, making it an excellent choice for various high-precision applications. The OPA2211A is available in a small WSON (DRG) package with 8 pins and operates over a wide temperature range of –40°C to +125°C.
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 nVPP | nVPP |
| 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 |
| 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 |
| Operating Temperature Range | –40°C to +125°C | °C |
| Package | WSON (DRG) with 8 pins | - |
Key Features
- Low voltage noise: 1.1 nV/√Hz at 1 kHz and 80 nVPP from 0.1 to 10 Hz.
- High-speed performance with a gain bandwidth product of 80 MHz (G = 100) and 45 MHz (G = 1).
- Low supply current of 3.6 mA per channel.
- Unity-gain stable and rail-to-rail output swing.
- High slew rate of 27 V/µs and fast settling time of 700 ns to 16-bit accuracy.
- Wide supply voltage range: ±2.25 to ±18 V or 4.5 V to 36 V.
- Low offset voltage and drift: 125 µV maximum and 0.35 µV/°C typical.
Applications
- Precision data acquisition systems, particularly for driving high-precision 16-bit analog-to-digital converters (ADCs) or buffering the output of high-resolution digital-to-analog converters (DACs).
- Loop filter amplifiers in Phase-Locked Loop (PLL) applications due to its low noise and high-speed characteristics.
- High-precision instrumentation and measurement equipment.
- Audio and medical devices requiring low noise and high accuracy.
Q & A
- What is the input voltage noise of the OPA2211A?
The input voltage noise of the OPA2211A is 1.1 nV/√Hz at 1 kHz and 80 nVPP from 0.1 to 10 Hz.
- What is the typical supply current of the OPA2211A?
The typical supply current of the OPA2211A is 3.6 mA per channel.
- What is the gain bandwidth product of the OPA2211A?
The gain bandwidth product of the OPA2211A is 80 MHz (G = 100) and 45 MHz (G = 1).
- What is the slew rate of the OPA2211A?
The slew rate of the OPA2211A is 27 V/µs.
- What is the settling time of the OPA2211A to 16-bit accuracy?
The settling time of the OPA2211A to 16-bit accuracy is 700 ns.
- What is the operating temperature range of the OPA2211A?
The operating temperature range of the OPA2211A is –40°C to +125°C.
- What are the available packages for the OPA2211A?
The OPA2211A is available in a WSON (DRG) package with 8 pins and also in an SO-8 PowerPAD™ package.
- What is the maximum output current of the OPA2211A?
The maximum output current of the OPA2211A is 30 mA.
- Is the OPA2211A unity-gain stable?
Yes, the OPA2211A is unity-gain stable.
- What are some typical applications of the OPA2211A?
The OPA2211A is typically used in precision data acquisition systems, PLL applications, high-precision instrumentation, and audio and medical devices.
