Overview
The AD8676ARMZ-REEL, produced by Analog Devices Inc., is an ultraprecision dual operational amplifier. It is renowned for its exceptionally low offset voltage, drift, and voltage noise, combined with very low input bias currents. This amplifier features a rail-to-rail output, wide bandwidth, and low power consumption, making it an ideal choice for applications requiring high precision and low noise.
The AD8676 is designed to operate over a wide supply voltage range from ±5 V to ±18 V and is fully specified for the extended industrial temperature range of −40°C to +125°C. Its compact 8-lead MSOP packaging makes it suitable for space-critical equipment, allowing for maximum channel density or minimum board size.
Key Specifications
| Parameter | Value | Unit |
|---|---|---|
| Input Offset Voltage (Vos) | 12 μV (typ), 50 μV (max) | μV |
| Input Offset Drift | 0.2 μV/°C (typ), 0.6 μV/°C (max) | μV/°C |
| Input Bias Current | 2 nA (max) | nA |
| Voltage Noise Density | 2.8 nV/√Hz @ 1 kHz | nV/√Hz |
| Current Noise Density | 0.3 pA/√Hz @ 10 Hz | pA/√Hz |
| Slew Rate | 2.5 V/μs | V/μs |
| Gain Bandwidth Product | 10 MHz | MHz |
| Output Current per Channel | 20 mA | mA |
| Power Supply Rejection Ratio (PSRR) | 120 dB | dB |
| Supply Current per Amplifier | 2.7 mA (typ), 3.8 mA (max) | mA |
| Operating Temperature Range | −40°C to +125°C | °C |
| Package Type | 8-lead MSOP | - |
Key Features
- Ultralow Noise: 2.8 nV/√Hz at 1 kHz, making it suitable for high-precision applications.
- Rail-to-Rail Output Swing: Ensures maximum signal range and dynamic range.
- Low Input Bias Current: 2 nA maximum, reducing errors in high-impedance circuits.
- Low Offset Voltage and Drift: 12 μV typical offset voltage and 0.2 μV/°C typical offset drift.
- Wide Bandwidth and High Gain: 10 MHz gain bandwidth product and 120 dB voltage gain.
- Low Power Consumption: 2.7 mA typical supply current per amplifier.
- Compact Packaging: Available in 8-lead MSOP, suitable for space-critical applications.
Applications
- Precision Instrumentation: Ideal for applications requiring high accuracy and low noise.
- PLL and Precision Filter Circuits: Suitable for phase-locked loops and precision filtering applications.
- Position and Pressure Sensors: Used in sensor amplifiers where precision and low noise are critical.
- Medical Instrumentation: Applies to medical devices that require high precision and reliability.
- Strain Gage Amplifiers: Used in strain gage applications where low noise and high precision are essential.
- Thermocouple Amplifiers and Laser Diode Control Loops: Suitable for thermocouple and laser diode control applications.
Q & A
- What is the typical input offset voltage of the AD8676?
The typical input offset voltage of the AD8676 is 12 μV, with a maximum of 50 μV.
- What is the voltage noise density of the AD8676 at 1 kHz?
The voltage noise density of the AD8676 at 1 kHz is 2.8 nV/√Hz.
- What is the slew rate of the AD8676?
The slew rate of the AD8676 is 2.5 V/μs.
- What is the gain bandwidth product of the AD8676?
The gain bandwidth product of the AD8676 is 10 MHz.
- What is the operating temperature range of the AD8676?
The operating temperature range of the AD8676 is −40°C to +125°C.
- What is the maximum output current per channel of the AD8676?
The maximum output current per channel of the AD8676 is 20 mA.
- What is the power supply rejection ratio (PSRR) of the AD8676?
The power supply rejection ratio (PSRR) of the AD8676 is 120 dB.
- What is the typical supply current per amplifier of the AD8676?
The typical supply current per amplifier of the AD8676 is 2.7 mA, with a maximum of 3.8 mA.
- In what package types is the AD8676 available?
The AD8676 is available in 8-lead MSOP packages.
- What are some common applications of the AD8676?
The AD8676 is commonly used in precision instrumentation, PLL and precision filter circuits, position and pressure sensors, medical instrumentation, and strain gage amplifiers.
