Overview
The OPA211AIDRGTG4 is a precision operational amplifier from Texas Instruments, part of the OPAx211 series. This amplifier is renowned for its extremely low voltage noise of 1.1 nV/√Hz at 1 kHz and low supply current of 3.6 mA per channel. It features a wide supply range, rail-to-rail output swing, and high-speed performance, making it an excellent choice for various precision applications.
Key Specifications
| Parameter | Value |
|---|---|
| Input Voltage Noise | 1.1 nV/√Hz at 1 kHz, 80 nV PP (0.1 to 10 Hz) |
| THD + N | –136 dB (G = 1, ƒ = 1 kHz) |
| Offset Voltage | 125 µV (maximum) |
| Offset Voltage Drift | 0.35 µV/°C (typical) |
| Supply Current | 3.6 mA/Ch (typical) |
| Gain Bandwidth Product | 80 MHz (G = 100), 45 MHz (G = 1) |
| Slew Rate | 27 V/µs |
| Settling Time | 700 ns to 16-bit accuracy |
| Supply Range | ±2.25 to ±18 V, 4.5 V to 36 V |
| Output Current | 30 mA |
| Operating Temperature Range | –40°C to +125°C |
| Package Types | SON-8 (3 mm × 3 mm), VSSOP-8, SOIC-8 |
Key Features
- Low voltage noise: 1.1 nV/√Hz at 1 kHz and 80 nV PP (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: 3.6 mA per channel
- Unity-gain stable
- Rail-to-rail output swing
- Wide supply range: ±2.25 to ±18 V, 4.5 V to 36 V
- Output current: 30 mA
- Small package options: SON-8 (3 mm × 3 mm), VSSOP-8, and SOIC-8
Applications
The OPA211AIDRGTG4 is suitable for a variety of precision applications, including:
- Precision data acquisition: Ideal for driving high-precision 16-bit analog-to-digital converters (ADCs) or buffering the output of high-resolution digital-to-analog converters (DACs).
- PLL applications: Excellent choice as a loop filter amplifier due to its low noise and high-speed performance.
- High-precision instrumentation: Suitable for applications requiring low noise, low offset, and high accuracy.
Q & A
- What is the input voltage noise of the OPA211AIDRGTG4?
The input voltage noise is 1.1 nV/√Hz at 1 kHz and 80 nV PP (0.1 to 10 Hz). - What is the typical supply current of the OPA211AIDRGTG4?
The typical supply current is 3.6 mA per channel. - What is the gain bandwidth product of the OPA211AIDRGTG4?
The gain bandwidth product is 80 MHz (G = 100) and 45 MHz (G = 1). - What is the slew rate of the OPA211AIDRGTG4?
The slew rate is 27 V/µs. - What is the settling time of the OPA211AIDRGTG4 to 16-bit accuracy?
The settling time is 700 ns. - What is the operating temperature range of the OPA211AIDRGTG4?
The operating temperature range is –40°C to +125°C. - What are the available package types for the OPA211AIDRGTG4?
The available package types are SON-8 (3 mm × 3 mm), VSSOP-8, and SOIC-8. - What is the output current capability of the OPA211AIDRGTG4?
The output current capability is 30 mA. - Is the OPA211AIDRGTG4 unity-gain stable?
Yes, the OPA211AIDRGTG4 is unity-gain stable. - What are some common applications for the OPA211AIDRGTG4?
Common applications include precision data acquisition, PLL applications, and high-precision instrumentation.
