Overview
The OPA211SHKJ from Texas Instruments is a precision operational amplifier known for its exceptionally low noise and high performance. This device is part of the OPA211 series, which achieves a very low 1.1 nV/√Hz noise density and operates with a supply current of only 3.6 mA. The OPA211SHKJ offers rail-to-rail output swing, maximizing dynamic range, and is suitable for a wide range of applications requiring high precision and low noise.
The amplifier is available in several package options, including the small SON-8 (3 mm × 3 mm), VSSOP-8, and SOIC-8 packages, making it versatile for various design needs. It 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, making it ideal for high-temperature environments and critical applications.
Key Specifications
| Parameter | Min | Typical | Max | Unit |
|---|---|---|---|---|
| Input Voltage Noise | - | 1.1 nV/√Hz at 1 kHz | - | nV/√Hz |
| Input Voltage Noise (0.1 Hz to 10 Hz) | - | 80 nVPP | - | nVPP |
| THD + N | - | –136 dB (G = 1, f = 1 kHz) | - | dB |
| Offset Voltage | -30 | 125 | - | μV |
| Offset Voltage Drift | - | 0.35 | - | μV/°C |
| Supply Current | - | 3.6 | 6 | mA |
| Gain Bandwidth Product | - | 80 MHz (G = 100), 45 MHz (G = 1) | - | MHz |
| Slew Rate | - | 27 | - | V/μs |
| Output Current | - | 30 | - | mA |
| Operating Temperature Range | –55 | - | 210 | °C |
| Supply Voltage Range | ±2.25 to ±18 V, 4.5 V to 36 V | - | - | V |
Key Features
- Very low 1.1 nV/√Hz noise density at 1 kHz and 80 nVPP input voltage noise from 0.1 Hz to 10 Hz.
- Low supply current of 3.6 mA per channel.
- High speed with a gain bandwidth product of 80 MHz (G = 100) and 45 MHz (G = 1), and a slew rate of 27 V/μs.
- Rail-to-rail output swing, maximizing dynamic range.
- Unity-gain stable.
- Wide supply range: ±2.25 V to ±18 V or single-supply operation from 4.5 V to 36 V.
- High precision with 125 μV maximum offset voltage and 0.35 μV/°C typical offset voltage drift.
- Available in small packages: SON-8 (3 mm × 3 mm), VSSOP-8, and SOIC-8.
- Shutdown function available.
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, and electronic loads
- Power analyzers and source measurement units (SMUs)
- Down-hole drilling and high-temperature environments
- Loop filter amplifiers in PLL applications
- Driving high-precision 16-bit analog-to-digital converters (ADCs) or buffering the output of high-resolution digital-to-analog converters (DACs)
Q & A
- What is the input voltage noise of the OPA211SHKJ?
The input voltage noise of the OPA211SHKJ is 1.1 nV/√Hz at 1 kHz and 80 nVPP from 0.1 Hz to 10 Hz.
- What is the typical supply current of the OPA211SHKJ?
The typical supply current of the OPA211SHKJ is 3.6 mA per channel.
- What is the gain bandwidth product of the OPA211SHKJ?
The gain bandwidth product of the OPA211SHKJ is 80 MHz (G = 100) and 45 MHz (G = 1).
- What is the slew rate of the OPA211SHKJ?
The slew rate of the OPA211SHKJ is 27 V/μs.
- What is the maximum output current of the OPA211SHKJ?
The maximum output current of the OPA211SHKJ is 30 mA.
- What is the operating temperature range of the OPA211SHKJ?
The operating temperature range of the OPA211SHKJ is from –55°C to 210°C.
- What are the available package options for the OPA211SHKJ?
The OPA211SHKJ is available in SON-8 (3 mm × 3 mm), VSSOP-8, and SOIC-8 packages.
- Does the OPA211SHKJ have a shutdown function?
Yes, the OPA211SHKJ has a shutdown function, which is active high.
- What are some typical applications of the OPA211SHKJ?
The OPA211SHKJ is typically used in ultrasound scanners, semiconductor test equipment, X-ray systems, lab and field instrumentation, and more.
- How does the OPA211SHKJ perform in terms of offset voltage and drift?
The OPA211SHKJ has a maximum offset voltage of 125 μV and a typical offset voltage drift of 0.35 μV/°C.
