Overview
The AD8668ARZ is a precision rail-to-rail operational amplifier produced by Analog Devices Inc. This quad operational amplifier is designed for general-purpose applications and is known for its high performance and reliability. It features low offset voltage, low input bias current, and a high slew rate, making it suitable for a wide range of analog signal processing tasks.
Key Specifications
| Parameter | Conditions | Min | Typ | Max | Unit |
|---|---|---|---|---|---|
| Supply Voltage | Single/Dual | 5 V ~ 16 V, ±2.5 V ~ ±8 V | V | ||
| Offset Voltage | VCM = 8 V | 0.6 | 2.5 | 5.0 | mV |
| Input Bias Current | 0.2 | 1 | pA | ||
| Slew Rate | RL = 2 kΩ | 3.5 | V/μs | ||
| Gain Bandwidth Product | 4 | MHz | |||
| Phase Margin | 70 | Degrees | |||
| Operating Temperature | −40°C | 125°C | °C | ||
| Package | 14-SOIC (0.154", 3.90mm Width) | ||||
| Output Type | Rail-to-Rail | ||||
| Number of Circuits | 4 | ||||
| Supply Current per Amplifier | 1.15 | 1.55 | mA | ||
| Output Current per Channel | 140 | mA |
Key Features
- Rail-to-Rail Output Swing: The AD8668ARZ offers rail-to-rail output swing, ensuring that the output voltage can reach the supply rails, which is beneficial for applications requiring maximum dynamic range.
- Low Offset Voltage: With a maximum offset voltage of 2.5 mV, this amplifier provides high accuracy in signal amplification.
- Low Input Bias Current: The low input bias current of 0.2 pA minimizes the impact on the input signal, making it suitable for high-impedance sources.
- High Slew Rate: A slew rate of 3.5 V/μs ensures fast response times and is suitable for applications requiring high-speed signal processing.
- Gain Bandwidth Product: The gain bandwidth product of 4 MHz provides a good balance between gain and bandwidth, making it versatile for various applications.
- Unity-Gain Stable: The amplifier is stable at unity gain, which simplifies circuit design and reduces the need for additional compensation components.
- Excellent Power-to-Performance Ratio: With a supply current per amplifier of 1.15 mA, it offers a good balance between power consumption and performance.
- Surface Mount Package: The 14-SOIC package is surface mountable, making it easy to integrate into modern PCB designs.
Applications
- Industrial Automation: Suitable for various industrial automation applications due to its robust performance and reliability.
- Medical Devices: Used in medical devices where high accuracy and low noise are critical, such as in ECG and EEG systems.
- Aerospace and Defense: The AD8668ARZ can be used in aerospace and defense applications where high reliability and performance are essential.
- Automotive Systems: Available in automotive-grade versions, making it suitable for use in automotive systems that require high reliability and performance under varying conditions.
- Audio and Video Equipment: Used in audio and video equipment where high signal fidelity and low noise are required.
Q & A
- What is the supply voltage range for the AD8668ARZ?
The supply voltage range for the AD8668ARZ is 5 V to 16 V for single-supply operation and ±2.5 V to ±8 V for dual-supply operation.
- What is the maximum offset voltage of the AD8668ARZ?
The maximum offset voltage of the AD8668ARZ is 2.5 mV.
- What is the input bias current of the AD8668ARZ?
The input bias current of the AD8668ARZ is 0.2 pA.
- What is the slew rate of the AD8668ARZ?
The slew rate of the AD8668ARZ is 3.5 V/μs.
- What is the gain bandwidth product of the AD8668ARZ?
The gain bandwidth product of the AD8668ARZ is 4 MHz.
- Is the AD8668ARZ unity-gain stable?
Yes, the AD8668ARZ is unity-gain stable.
- What is the operating temperature range of the AD8668ARZ?
The operating temperature range of the AD8668ARZ is −40°C to +125°C.
- What is the package type of the AD8668ARZ?
The AD8668ARZ comes in a 14-SOIC package.
- Is the AD8668ARZ RoHS compliant?
Yes, the AD8668ARZ is RoHS compliant.
- What are some typical applications of the AD8668ARZ?
The AD8668ARZ is typically used in industrial automation, medical devices, aerospace and defense, automotive systems, and audio and video equipment.
