Overview
The OPA211AIDRGR is a precision operational amplifier from Texas Instruments, part of the OPAx211 series. This device is renowned for its extremely low noise density of 1.1 nV/√Hz at 1 kHz and low supply current of 3.6 mA per channel. It features a rail-to-rail output swing, which maximizes dynamic range, making it an excellent choice for various high-precision applications. The OPA211AIDRGR operates over a wide dual-power supply range of ±2.25 to ±18 V or single-supply operation from 4.5 to 36 V, and is specified over a temperature range of –40°C to +125°C.
Key Specifications
| Parameter | Value | Unit |
|---|---|---|
| Package | WSON (DRG) | - |
| Pins | 8 | - |
| Operating Temperature Range | –40 to 125 | °C |
| 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 |
| 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 Range | ±2.25 to ±18 V, 4.5 V to 36 V | V |
| Output Current | 30 mA | mA |
Key Features
- Low voltage noise: 1.1 nV/√Hz at 1 kHz
- Input voltage noise: 80 nVPP (0.1 to 10 Hz)
- High total harmonic distortion plus noise (THD + N): –136 dB (G = 1, ƒ = 1 kHz)
- Low offset voltage: 125 µV (maximum)
- Low offset voltage drift: 0.35 µV/°C (typical)
- Low supply current: 3.6 mA/Ch (typical)
- Unity-gain stable
- High gain bandwidth product: 80 MHz (G = 100), 45 MHz (G = 1)
- High slew rate: 27 V/µs
- Fast settling time to 16-bit accuracy: 700 ns
- Wide supply range: ±2.25 to ±18 V, 4.5 V to 36 V
- Rail-to-rail output swing
- High output current: 30 mA
Applications
- Ultrasound scanners
- Semiconductor test equipment
- X-ray systems
- Lab and field instrumentation
- Data acquisition (DAQ) systems
- Radar systems
- Wireless communications test equipment
- Seismic data acquisition
- DC power supplies, AC sources, electronic loads
- Power analyzers
- Source measurement units (SMUs)
Q & A
- What is the voltage noise of the OPA211AIDRGR at 1 kHz?
The voltage noise of the OPA211AIDRGR at 1 kHz is 1.1 nV/√Hz.
- What is the typical supply current of the OPA211AIDRGR?
The typical supply current of the OPA211AIDRGR is 3.6 mA per channel.
- What is the gain bandwidth product of the OPA211AIDRGR?
The gain bandwidth product of the OPA211AIDRGR is 80 MHz (G = 100) and 45 MHz (G = 1).
- What is the slew rate of the OPA211AIDRGR?
The slew rate of the OPA211AIDRGR is 27 V/µs.
- What is the settling time to 16-bit accuracy for the OPA211AIDRGR?
The settling time to 16-bit accuracy for the OPA211AIDRGR is 700 ns.
- What is the output current capability of the OPA211AIDRGR?
The output current capability of the OPA211AIDRGR is 30 mA.
- What are the available package options for the OPA211AIDRGR?
The OPA211AIDRGR is available in SON-8 (3 mm × 3 mm), VSSOP-8, and SOIC-8 packages.
- What is the operating temperature range of the OPA211AIDRGR?
The operating temperature range of the OPA211AIDRGR is –40°C to +125°C.
- What are some typical applications of the OPA211AIDRGR?
The OPA211AIDRGR is typically used in ultrasound scanners, semiconductor test equipment, X-ray systems, lab and field instrumentation, data acquisition systems, and more.
- What is the common-mode voltage range for the OPA211AIDRGR?
The common-mode voltage range for the OPA211AIDRGR 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.
