Overview
The OPA211AIDGKTG4 is a precision operational amplifier from Texas Instruments, part of the OPAx211 series. This series is renowned for its very low noise density of 1.1 nV/√Hz at 1 kHz and a supply current of only 3.6 mA per channel. The OPA211AIDGKTG4 offers rail-to-rail output swing, maximizing dynamic range, and is 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. It is available in small packages such as SON-8 (3 mm × 3 mm), VSSOP-8, and SOIC-8, making it suitable for a variety of 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 Type | 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 precision with low offset voltage (125 µV maximum) and low drift (0.35 µV/°C typical)
- Low supply current: 3.6 mA per channel
- Unity-gain stable
- High gain bandwidth product: 80 MHz (G = 100), 45 MHz (G = 1)
- Fast slew rate: 27 V/µs
- Fast settling time: 700 ns to 16-bit accuracy
- Wide supply range: ±2.25 to ±18 V, 4.5 V to 36 V
- Rail-to-rail output swing
- Output current: 30 mA
Applications
- Driving high-precision 16-bit analog-to-digital converters (ADCs)
- Buffering the output of high-resolution digital-to-analog converters (DACs)
- Loop filter amplifiers in PLL applications
- Precision data acquisition applications
Q & A
- What is the input voltage noise of the OPA211AIDGKTG4?
The input voltage noise 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 OPA211AIDGKTG4?
The offset voltage is 125 µV (maximum), and the offset voltage drift is 0.35 µV/°C (typical).
- What is the supply current of the OPA211AIDGKTG4?
The supply current is 3.6 mA per channel (typical).
- What is the gain bandwidth product of the OPA211AIDGKTG4?
The gain bandwidth product is 80 MHz (G = 100) and 45 MHz (G = 1).
- What is the slew rate of the OPA211AIDGKTG4?
The slew rate is 27 V/µs.
- What is the settling time of the OPA211AIDGKTG4?
The settling time is 700 ns to 16-bit accuracy.
- What is the supply range of the OPA211AIDGKTG4?
The supply range is ±2.25 to ±18 V or 4.5 V to 36 V.
- What is the output current of the OPA211AIDGKTG4?
The output current is 30 mA.
- In what packages is the OPA211AIDGKTG4 available?
The OPA211AIDGKTG4 is available in SON-8 (3 mm × 3 mm), VSSOP-8, and SOIC-8 packages.
- What are the typical applications of the OPA211AIDGKTG4?
Typical applications include driving high-precision ADCs, buffering high-resolution DACs, loop filter amplifiers in PLL applications, and precision data acquisition.
