Overview
The OPA211SKGD1 is a precision operational amplifier from Texas Instruments, part of the OPA211 series. This device is renowned for its extremely low noise density of 1.1 nV/√Hz at 1 kHz and a supply current of only 3.6 mA per channel. It offers rail-to-rail output swing, which maximizes dynamic range, making it an excellent choice for various high-precision applications. The OPA211SKGD1 is specified over a wide dual-power supply range of ±2.25 V to ±18 V or for single-supply operation from 4.5 V to 36 V, and it operates from –55°C to 210°C.
Key Specifications
| Parameter | Min | Typical | Max | Unit |
|---|---|---|---|---|
| Input Voltage Noise Density | - | 1.1 | - | nV/√Hz |
| Input Voltage Noise (0.1 Hz to 10 Hz) | - | 80 | - | nVPP |
| Total Harmonic Distortion + Noise (THD+N) | - | -136 | - | dB (G = 1, f = 1 kHz) |
| Offset Voltage | -20 | 50 | 125 | μV |
| Offset Voltage Drift | -0.15 | 0.35 | 0.85 | μV/°C |
| Supply Current | - | 3.6 | 7.5 | mA (per channel) |
| Gain-Bandwidth Product (GBW) | - | 45 (G = 1) | 80 (G = 100) | MHz |
| Slew Rate | - | 27 | - | V/μs |
| Settling Time (0.01%, 16-bit accuracy) | - | 700 | 750 | ns |
| Output Current | - | - | 30 | mA |
| Operating Temperature Range | -55 | - | 210 | °C |
| Supply Voltage Range | ±2.25 to ±18 V | - | 4.5 to 36 V | V |
Key Features
- Extremely low voltage noise: 1.1 nV/√Hz at 1 kHz and 80 nVPP (0.1 Hz to 10 Hz)
- Low supply current: 3.6 mA per channel
- Rail-to-rail output swing, maximizing dynamic range
- High speed: Gain-bandwidth product of 45 MHz (G = 1) and 80 MHz (G = 100)
- Fast settling time: 700 ns to 16-bit accuracy
- Low offset voltage and drift: 125 μV and 0.35 μV/°C respectively
- Wide supply voltage range: ±2.25 V to ±18 V or 4.5 V to 36 V
- High temperature operation: –55°C to 210°C
- Available in small packages: SON-8, VSSOP-8, and SOIC-8
Applications
- Down-Hole Drilling
- High Temperature Environments
- Ultrasound scanners
- Semiconductor test equipment
- X-ray systems
- Lab and field instrumentation
- Data acquisition (DAQ)
- Radar systems
- Wireless communications test equipment
- Seismic data acquisition
- DC power supply, AC source, electronic load
- Power analyzers and source measurement units (SMUs)
Q & A
- What is the input voltage noise density of the OPA211SKGD1?
The input voltage noise density of the OPA211SKGD1 is 1.1 nV/√Hz at 1 kHz.
- What is the typical supply current of the OPA211SKGD1?
The typical supply current of the OPA211SKGD1 is 3.6 mA per channel.
- What is the output current capability of the OPA211SKGD1?
The OPA211SKGD1 can deliver up to 30 mA of output current.
- What is the operating temperature range of the OPA211SKGD1?
The OPA211SKGD1 operates from –55°C to 210°C.
- What are the available package options for the OPA211SKGD1?
The OPA211SKGD1 is available in SON-8, VSSOP-8, and SOIC-8 packages.
- What is the gain-bandwidth product (GBW) of the OPA211SKGD1?
The gain-bandwidth product (GBW) of the OPA211SKGD1 is 45 MHz (G = 1) and 80 MHz (G = 100).
- What is the settling time of the OPA211SKGD1 to 16-bit accuracy?
The settling time of the OPA211SKGD1 to 16-bit accuracy is 700 ns.
- What are some typical applications of the OPA211SKGD1?
The OPA211SKGD1 is used in applications such as ultrasound scanners, semiconductor test equipment, X-ray systems, and data acquisition systems.
- What is the offset voltage and drift of the OPA211SKGD1?
The offset voltage is 125 μV, and the offset voltage drift is 0.35 μV/°C.
- What is the total harmonic distortion + noise (THD+N) of the OPA211SKGD1?
The total harmonic distortion + noise (THD+N) of the OPA211SKGD1 is –136 dB (G = 1, f = 1 kHz).
