Overview
The AD8572ARZ-REEL, produced by Analog Devices Inc., is a dual operational amplifier that belongs to the AD8571/AD8572/AD8574 family. These amplifiers are known for their ultralow offset, drift, and bias current, making them ideal for high-accuracy applications. The AD8572 is a dual amplifier, featuring rail-to-rail input and output swings, and is guaranteed to operate from a single supply of 2.7 V to 5 V. This zero-drift amplifier combines low cost with high accuracy, utilizing a spread-spectrum, auto-zero technique to eliminate intermodulation effects and provide stable performance.
Key Specifications
| Parameter | Value | Conditions |
|---|---|---|
| Input Bias Current | 10 pA (typical), 150 pA (max) @ -40°C to +125°C | - |
| Supply Current per Amplifier | 850 μA (typical), 1075 μA (max) @ -40°C to +125°C | VS = 2.7 V to 5 V |
| Common-Mode Rejection Ratio (CMRR) | 120 dB (typical), 115 dB (min) @ -40°C to +125°C | VCM = 0 V to 5 V |
| Large Signal Voltage Gain | 125 dB (typical), 120 dB (min) @ -40°C to +125°C | RL = 10 kΩ, VO = 0.3 V to 4.7 V |
| Offset Voltage Drift | 0.005 μV/°C (typical), 0.04 μV/°C (max) @ -40°C to +125°C | - |
| Output Voltage High | 4.99 V (typical) @ RL = 100 kΩ to GND | - |
| Output Voltage Low | 10 mV (typical) @ RL = 100 kΩ to V+ | - |
| Slew Rate | 0.4 V/μs | RL = 10 kΩ |
| Gain Bandwidth Product | 1.5 MHz | - |
| Overload Recovery Time | 0.05 ms (typical), 0.3 ms (max) | - |
| Package | 8-SOIC (0.154", 3.90mm Width) | - |
Key Features
- Ultralow Input Bias Current: 10 pA typical, ensuring minimal input current leakage.
- Low Supply Current: 850 μA per op amp, making it suitable for low-power applications.
- Rail-to-Rail Input and Output Swings: Allows for full-range signal handling without clipping.
- No External Capacitors Required: Simplifies circuit design and reduces component count.
- Zero-Drift Technology: Utilizes a spread-spectrum, auto-zero technique to eliminate intermodulation effects and provide high accuracy.
- High Common-Mode Rejection Ratio (CMRR): 120 dB typical, ensuring robust performance in noisy environments.
- High Large Signal Voltage Gain: 125 dB typical, providing high gain accuracy.
- Low Offset Voltage Drift: 0.005 μV/°C typical, ensuring stable performance over temperature changes.
Applications
- Temperature Sensors: Ideal for precise temperature measurement.
- Pressure Sensors: Suitable for high-accuracy pressure sensing applications.
- Precision Current Sensing: Used in applications requiring accurate current measurement.
- Strain Gage Amplifiers: Enhances signal quality in strain gage measurements.
- Medical Instrumentation: Used in medical devices requiring high precision and low noise.
- Thermocouple Amplifiers: Suitable for thermocouple signal conditioning.
Q & A
- What is the typical input bias current of the AD8572ARZ-REEL?
The typical input bias current is 10 pA.
- What is the supply current per amplifier for the AD8572ARZ-REEL?
The supply current per amplifier is typically 850 μA.
- What is the common-mode rejection ratio (CMRR) of the AD8572ARZ-REEL?
The CMRR is typically 120 dB.
- Does the AD8572ARZ-REEL require external capacitors?
No, the AD8572ARZ-REEL does not require external capacitors.
- What is the operating voltage range for the AD8572ARZ-REEL?
The operating voltage range is from 2.7 V to 5 V.
- What is the slew rate of the AD8572ARZ-REEL?
The slew rate is 0.4 V/μs.
- What is the gain bandwidth product of the AD8572ARZ-REEL?
The gain bandwidth product is 1.5 MHz.
- What are some common applications of the AD8572ARZ-REEL?
Common applications include temperature sensors, pressure sensors, precision current sensing, strain gage amplifiers, medical instrumentation, and thermocouple amplifiers.
- What is the package type of the AD8572ARZ-REEL?
The package type is 8-SOIC (0.154", 3.90mm Width).
- Is the AD8572ARZ-REEL RoHS compliant?
