Overview
The AD8671ARMZ-R2, produced by Analog Devices Inc., is a high-precision operational amplifier known for its very low noise, low offset voltage and drift, and low input bias current. This amplifier is part of the AD8671/AD8672/AD8674 family, which is renowned for its ultralow noise, high precision, speed, and stability. The AD8671ARMZ-R2 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 | Symbol | Min | Typ | Max | Unit |
|---|---|---|---|---|---|
| Offset Voltage | VOS | 20 | 75 | 125 | µV |
| Offset Voltage Drift | ∆VOS/∆T | 0.3 | 0.5 | 0.8 | µV/°C |
| Input Bias Current | IB | -12 | 3 | 12 | nA |
| Input Offset Current | IOS | -12 | 6 | 12 | nA |
| Input Voltage Range | -2.5 | 2.5 | V | ||
| Common-Mode Rejection Ratio | CMRR | 100 | 120 | dB | |
| Supply Current/Amplifier | ISY | 3 | 3.5 | 4.2 | mA |
| Slew Rate | SR | 4 | V/µs | ||
| Gain Bandwidth Product | GBP | 10 | MHz | ||
| Voltage Noise Density | en | 2.8 | 3.8 | nV/√Hz | |
| Peak-to-Peak Noise | en p-p | 77 | 100 | nV p-p |
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 offset voltage: 75 µV maximum.
- Low input bias current: 12 nA maximum.
- High precision: Low offset voltage drift of 0.3 to 0.8 µV/°C.
- Wide bandwidth: 10 MHz gain bandwidth product.
- Low power consumption: Supply current less than 3 mA per amplifier.
- Dual-supply operation: ±5 V to ±15 V.
- Unity-gain stable with no phase reversal.
- Stable with capacitive loads of over 1000 pF.
Applications
- High-quality PLL filters and precision filters.
- Medical and analytical instrumentation.
- Precision power supply controls.
- Automated Test Equipment (ATE) and data acquisition.
- Precision controls and sensors.
- Professional quality audio.
- GPS filters and other high-precision signal processing applications.
Q & A
- What is the typical voltage noise density of the AD8671ARMZ-R2?
The typical voltage noise density is 2.8 nV/√Hz at 1 kHz.
- What is the maximum offset voltage of the AD8671ARMZ-R2?
The maximum offset voltage is 75 µV.
- What is the input bias current range of the AD8671ARMZ-R2?
The input bias current ranges from -12 nA to 12 nA.
- What is the gain bandwidth product of the AD8671ARMZ-R2?
The gain bandwidth product is 10 MHz.
- What is the typical supply current per amplifier for the AD8671ARMZ-R2?
The typical supply current per amplifier is 3 mA.
- What is the operating temperature range for the AD8671ARMZ-R2?
The operating temperature range is -40°C to +125°C.
- Is the AD8671ARMZ-R2 stable with capacitive loads?
Yes, it is stable with capacitive loads of over 1000 pF.
- What are the common applications of the AD8671ARMZ-R2?
Common applications include high-quality PLL filters, precision filters, medical and analytical instrumentation, and professional quality audio.
- What is the slew rate of the AD8671ARMZ-R2?
The slew rate is 4 V/µs.
- What is the power supply rejection ratio (PSRR) of the AD8671ARMZ-R2?
The PSRR is 110 to 130 dB for the AD8671 and AD8672.
