Overview
The AD8674ARUZ is a high-precision, low-noise operational amplifier produced by Analog Devices Inc. It is part of the AD8671/AD8672/AD8674 series, known for their ultralow noise, high precision, and stability. This quad operational amplifier is designed to offer very low offset voltage, low input bias current, and high open-loop gain, making it suitable for a wide range of precision applications.
Key Specifications
| Parameter | Symbol | Min | Typ | Max | Unit |
|---|---|---|---|---|---|
| Offset Voltage | VOS | 20 | 75 | 125 | µV |
| Offset Voltage Drift | ΔVOS/ΔT | 0.3 | 0.8 | µV/°C | |
| Input Bias Current | IB | -12 | 3 | 12 | nA |
| Input Offset Current | IOS | -12 | 6 | 12 | nA |
| Input Voltage Range | IVR | -2.5 | 2.5 | V | |
| Common-Mode Rejection Ratio | CMRR | 105 | 130 | 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 | |
| Current Noise Density | in | 0.3 | pA/√Hz | ||
| Output Voltage High | VOH | 13.2 | 13.8 | V | |
| Output Voltage Low | VOL | -13.8 | -13.2 | V | |
| Output Current | IOUT | ±20 | mA | ||
| Short Circuit Current | ISC | ±30 | mA |
Key Features
- Ultralow voltage noise: 2.8 nV/√Hz at 1 kHz
- Very low offset voltage: 75 µV maximum
- Low input bias current: 12 nA maximum
- High open-loop gain: 120 dB minimum
- Low power consumption: 3 mA typical per amplifier
- Dual-supply operation: ±5 V to ±15 V
- Unity-gain stable
- No phase reversal
- Stable with capacitive loads over 1000 pF
Applications
- High-quality PLL filters
- Precision filters for GPS and other applications
- Medical and analytical instrumentation
- Precision power supply controls
- Automated Test Equipment (ATE)
- Data acquisition systems
- Precision controls and sensors
- Professional quality audio systems
Q & A
- What is the typical voltage noise density of the AD8674ARUZ?
The typical voltage noise density is 2.8 nV/√Hz at 1 kHz.
- What is the maximum offset voltage of the AD8674ARUZ?
The maximum offset voltage is 75 µV.
- What is the input bias current of the AD8674ARUZ?
The input bias current is 12 nA maximum.
- What is the gain bandwidth product of the AD8674ARUZ?
The gain bandwidth product is 10 MHz.
- What is the typical supply current per amplifier for the AD8674ARUZ?
The typical supply current per amplifier is 3 mA.
- What are the operating temperature ranges for the AD8674ARUZ?
The AD8674 is specified over the industrial temperature range of −40°C to +85°C.
- What are the package options available for the AD8674ARUZ?
The AD8674 is available in 14-lead SOIC and 14-lead TSSOP packages.
- Is the AD8674ARUZ unity-gain stable?
Yes, the AD8674ARUZ is unity-gain stable.
- What are some common applications of the AD8674ARUZ?
Common applications include high-quality PLL filters, precision filters, medical and analytical instrumentation, and professional quality audio systems.
- Does the AD8674ARUZ have phase reversal issues?
No, the AD8674ARUZ does not have phase reversal issues.
