Overview
The AD8671ARM-R2, produced by Analog Devices Inc., is a high-precision operational amplifier known for its very low noise, low offset voltage, and high stability. This amplifier is part of the AD8671/AD8672/AD8674 series, which are renowned for their ultralow noise, high precision, and speed. The AD8671 is particularly suited for applications requiring high accuracy and low noise, such as high-quality PLL filters, precision filters, medical and analytical instrumentation, and professional quality audio.
Key Specifications
| Parameter | Min | Typ | Max | Unit |
|---|---|---|---|---|
| Input Offset Voltage (VOS) | 10 | - | 75 | μV |
| Input Offset Voltage Drift (ΔVOS/ΔT) | 0.3 | - | 0.5 | μV/°C |
| Input Bias Current (IB) | -12 | 3 | 12 | nA |
| Common-Mode Rejection Ratio (CMRR) | 100 | - | 120 | dB |
| Large Signal Voltage Gain (AVO) | 1000 | - | 6000 | V/mV |
| Bandwidth | - | - | 10 | MHz |
| Slew Rate (SR) | - | - | 4 | V/μs |
| Settling Time (tS) to 0.1% (4 V step, G = 1) | - | - | 1.4 | μs |
| Gain Bandwidth Product (GBP) | - | - | 10 | MHz |
| Voltage Noise Density (en) at 1 kHz | - | - | 2.8 | nV/√Hz |
| Peak-to-Peak Noise (en p-p) 0.1 Hz to 10 Hz | - | - | 77 | nV p-p |
| Supply Current per Amplifier (ISY) | - | - | 3.5 | mA |
| Operating Temperature Range | -40 | - | 125 | °C |
Key Features
- Very low noise: 2.8 nV/√Hz voltage noise density and 77 nV p-p peak-to-peak noise from 0.1 Hz to 10 Hz.
- Low input bias current: Maximum of 12 nA.
- Low offset voltage and drift: Maximum offset voltage of 75 μV and drift of 0.5 μV/°C.
- High bandwidth: 10 MHz bandwidth and a gain bandwidth product of 10 MHz.
- Low power consumption: Supply current less than 3.5 mA per amplifier.
- Stable with capacitive loads: Outputs are stable with capacitive loads of over 1000 pF.
- Dual-supply operation: Operates with ±5 V to ±15 V supplies.
- High common-mode rejection ratio: Up to 120 dB.
Applications
- High-quality PLL filters and precision filters.
- Medical and analytical instrumentation.
- Precision power supply controls.
- Automated Test Equipment (ATE) and data acquisition systems.
- Precision controls and professional quality audio applications.
Q & A
- What is the typical voltage noise density of the AD8671? The typical voltage noise density is 2.8 nV/√Hz at 1 kHz.
- What is the maximum input offset voltage of the AD8671? The maximum input offset voltage is 75 μV.
- What is the bandwidth of the AD8671? The bandwidth is 10 MHz.
- What is the slew rate of the AD8671? The slew rate is 4 V/μs.
- What is the gain bandwidth product of the AD8671? The gain bandwidth product is 10 MHz.
- What is the operating temperature range of the AD8671? The operating temperature range is from -40°C to +125°C.
- What are the typical supply currents for the AD8671? The typical supply current is less than 3.5 mA per amplifier.
- Is the AD8671 stable with capacitive loads? Yes, the AD8671 is stable with capacitive loads of over 1000 pF.
- What are some common applications of the AD8671? Common applications include high-quality PLL filters, precision filters, medical and analytical instrumentation, and professional quality audio.
- What are the package options for the AD8671? The AD8671 is available in 8-lead SOIC and 8-lead MSOP packages.
