Overview
The OPA2211AIDRGR is a precision operational amplifier produced by Texas Instruments. It is part of the OPAx211 series, known for its extremely low voltage noise and high-speed performance. This dual operational amplifier is designed to offer rail-to-rail output swing, maximizing dynamic range, and is suitable for a variety of precision applications including PLL loop filters, data acquisition, and driving high-precision analog-to-digital converters (ADCs) and digital-to-analog converters (DACs).
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 |
| 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 (16-bit accuracy) | 700 ns | |
| Supply Range | ±2.25 to ±18 V, 4.5 V to 36 V | |
| Output Current | 30 | mA |
| Package | SON-8 (3 mm × 3 mm), SO-8 PowerPAD™ | |
| Operating Temperature Range | –40°C to +125°C |
Key Features
- Low voltage noise: 1.1 nV/√Hz at 1 kHz
- Input voltage noise: 80 nVPP (0.1 to 10 Hz)
- High THD + N performance: –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: 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
- High output current: 30 mA
Applications
- PLL loop filter amplifiers
- Precision data acquisition applications
- Driving high-precision 16-bit analog-to-digital converters (ADCs)
- Buffering the output of high-resolution digital-to-analog converters (DACs)
- Active filters
- Low-noise instrumentation amplifiers
Q & A
- What is the input voltage noise density of the OPA2211A?
The input voltage noise density of the OPA2211A is 1.1 nV/√Hz at 1 kHz.
- What is the typical supply current of the OPA2211A?
The typical supply current of the OPA2211A is 3.6 mA per channel.
- What is the gain bandwidth product of the OPA2211A?
The gain bandwidth product of the OPA2211A is 80 MHz (G = 100) and 45 MHz (G = 1).
- What is the slew rate of the OPA2211A?
The slew rate of the OPA2211A is 27 V/µs.
- What is the settling time of the OPA2211A to 16-bit accuracy?
The settling time of the OPA2211A to 16-bit accuracy is 700 ns.
- What is the output current capability of the OPA2211A?
The output current capability of the OPA2211A is 30 mA.
- What are the available package options for the OPA2211A?
The OPA2211A is available in SON-8 (3 mm × 3 mm) and SO-8 PowerPAD™ packages.
- What is the operating temperature range of the OPA2211A?
The operating temperature range of the OPA2211A is –40°C to +125°C.
- What are some typical applications of the OPA2211A?
The OPA2211A is typically used in PLL loop filters, precision data acquisition, driving high-precision ADCs and DACs, active filters, and low-noise instrumentation amplifiers.
- Does the OPA2211A support rail-to-rail output swing?
Yes, the OPA2211A supports rail-to-rail output swing.
- What is the maximum offset voltage of the OPA2211A?
The maximum offset voltage of the OPA2211A is 125 µV.
