Overview
The OPA211AIDG4 is a precision operational amplifier from Texas Instruments, part of the OPAx211 series. This amplifier is renowned for its ultra-low noise, low power consumption, and high bandwidth, making it an excellent choice for various high-precision applications. The OPA211AIDG4 features a 1.1 nV/√Hz noise density and a supply current of only 3.6 mA, making it suitable for applications requiring high accuracy and low power consumption.
Key Specifications
| Parameter | Value | Unit |
|---|---|---|
| Input Voltage Noise Density | 1.1 | nV/√Hz at 1 kHz |
| Input Voltage Noise (0.1 to 10 Hz) | 80 | nVPP |
| Offset Voltage | 125 | μV (maximum) |
| Offset Voltage Drift | 0.35 | μV/°C (typical) |
| Supply Current per Channel | 3.6 | mA (typical) |
| Gain Bandwidth Product | 45 MHz (G = 1), 80 MHz (G = 100) | 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 |
| Operating Temperature Range | –40 to 125 | °C |
| Package Type | VSSOP-8 |
Key Features
- Ultra-low voltage noise: 1.1 nV/√Hz at 1 kHz
- Low input voltage noise: 80 nVPP (0.1 to 10 Hz)
- High accuracy: 125 μV offset voltage and 0.35 μV/°C drift
- Low power consumption: 3.6 mA typical supply current per channel
- High-speed performance: 45 MHz and 80 MHz gain bandwidth product
- Rail-to-rail output swing for maximum dynamic range
- Fast settling time: 700 ns to 16-bit accuracy
- Wide supply voltage range: ±2.25 to ±18 V, 4.5 V to 36 V
- Compact packaging: SON-8, VSSOP-8, and SOIC-8 options
Applications
- Driving high-precision 16-bit analog-to-digital converters (ADCs) and buffering the output of high-resolution digital-to-analog converters (DACs)
- Loop filter amplifiers in PLL applications
- Precision data acquisition systems
- Ultrasound scanners, semiconductor testing, and X-ray systems
- Lab and field instrumentation, radar, and wireless communications testing
- Seismic data acquisition, DC power supplies, ac sources, electronic loads, and power analyzers
Q & A
- What is the input voltage noise density of the OPA211AIDG4?
The input voltage noise density is 1.1 nV/√Hz at 1 kHz. - What is the typical supply current per channel for the OPA211AIDG4?
The typical supply current per channel is 3.6 mA. - What is the gain bandwidth product of the OPA211AIDG4?
The gain bandwidth product is 45 MHz (G = 1) and 80 MHz (G = 100). - What is the slew rate of the OPA211AIDG4?
The slew rate is 27 V/μs. - What is the settling time to 16-bit accuracy for the OPA211AIDG4?
The settling time is 700 ns. - What is the output current capability of the OPA211AIDG4?
The output current is up to 30 mA. - What are the available package types for the OPA211AIDG4?
The available package types include SON-8, VSSOP-8, and SOIC-8. - What is the operating temperature range for the OPA211AIDG4?
The operating temperature range is –40°C to 125°C. - What are some typical applications for the OPA211AIDG4?
Typical applications include driving high-precision ADCs and DACs, loop filter amplifiers in PLL applications, and precision data acquisition systems. - What is the common-mode voltage range for the OPA211AIDG4?
The common-mode voltage range is (V–) + 1.8 to (V+) – 1.4 V for VS ≥ ±5 V, and (V–) + 2 to (V+) – 1.4 V for VS < ±5 V.
