Overview
The AD8571ARZ-REEL, produced by Analog Devices Inc., is a single-channel, zero-drift operational amplifier. This device is part of the AD8571/AD8572/AD8574 family, which offers high accuracy and low cost, making it an excellent choice for various precision applications. The AD8571 features rail-to-rail input and output swings, ultralow offset voltage, and minimal temperature drift, ensuring high dc precision and low distortion for ac signals.
Key Specifications
| Parameter | Typical Value | Min/Max Value |
|---|---|---|
| Input Bias Current (IOS) | 10 pA | 10 pA to 50 pA (-40°C to +125°C) |
| Supply Current per Amplifier (ISY) | 750 μA | 850 μA to 975 μA (-40°C to +125°C) |
| Offset Voltage (VOS) | 1 μV | - / +1 μV |
| Offset Voltage Drift (∆VOS/∆T) | 0.005 μV/°C | 0.005 μV/°C to 0.04 μV/°C (-40°C to +125°C) |
| Common-Mode Rejection Ratio (CMRR) | 120 dB | 115 dB to 140 dB (-40°C to +125°C) |
| Large Signal Voltage Gain (AVO) | 125 dB | 120 dB to 145 dB (-40°C to +125°C) |
| Output Voltage High (VOH) | 4.99 V (RL = 100 kΩ to GND) | 4.95 V to 4.998 V (RL = 10 kΩ to GND, -40°C to +125°C) |
| Output Voltage Low (VOL) | 1 mV (RL = 100 kΩ to V+) | 1 mV to 30 mV (RL = 10 kΩ to V+, -40°C to +125°C) |
| Slew Rate (SR) | 0.4 V/μs | - / 0.4 V/μs |
| Gain Bandwidth Product (GBP) | 1.5 MHz | - / 1.5 MHz |
| Overload Recovery Time | 50 μs | - / 50 μs |
| Supply Voltage Range | 2.7 V to 5 V | 2.7 V to 5 V |
Key Features
- Zero-Drift Technology: Utilizes a spread-spectrum, auto-zero technique to eliminate intermodulation effects and provide high accuracy.
- Rail-to-Rail Input and Output: Allows the input common-mode voltage range to reach both supply rails and ensures full output swing.
- Ultralow Offset Voltage and Drift: Offers an offset voltage of 1 μV and a temperature drift of 0.005 μV/°C, ensuring minimal offset voltage error over a wide temperature range.
- Low Input Bias Current: Typical input bias current of 10 pA, making it suitable for high-impedance sources.
- Low Supply Current: Consumes only 750 μA per op amp, making it power-efficient.
- No External Capacitors Required: Simplifies circuit design and reduces component count.
Applications
- Temperature Sensors: Ideal for precise temperature measurements due to its low offset and drift characteristics.
- Pressure Sensors: Suitable for pressure sensing applications requiring high accuracy and stability.
- Precision Current Sensing: Used in applications where precise current measurement is critical.
- Strain Gage Amplifiers: Enhances the accuracy of strain gage measurements.
- Medical Instrumentation: Applicable in medical devices requiring high precision and reliability.
- Thermocouple Amplifiers: Ideal for thermocouple applications due to its low noise and high accuracy.
Q & A
- What is the typical input bias current of the AD8571ARZ-REEL?
The typical input bias current is 10 pA.
- What is the supply voltage range for the AD8571ARZ-REEL?
The supply voltage range is from 2.7 V to 5 V.
- Does the AD8571ARZ-REEL require external capacitors?
No, external capacitors are not required.
- What is the offset voltage of the AD8571ARZ-REEL?
The offset voltage is typically 1 μV.
- What is the temperature drift of the AD8571ARZ-REEL?
The temperature drift is 0.005 μV/°C.
- What is the common-mode rejection ratio (CMRR) of the AD8571ARZ-REEL?
The CMRR is typically 120 dB.
- What is the slew rate of the AD8571ARZ-REEL?
The slew rate is 0.4 V/μs.
- What is the gain bandwidth product (GBP) of the AD8571ARZ-REEL?
The GBP is 1.5 MHz.
- What are some typical applications of the AD8571ARZ-REEL?
Typical applications include temperature sensors, pressure sensors, precision current sensing, strain gage amplifiers, medical instrumentation, and thermocouple amplifiers.
- What is the overload recovery time of the AD8571ARZ-REEL?
The overload recovery time is 50 μs.
