AD8572AR
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Analog Devices Inc. AD8572AR

Manufacturer No:
AD8572AR
Manufacturer:
Analog Devices Inc.
Package:
Tube
Description:
IC OPAMP ZERO-DRIFT 2 CIRC 8SOIC
Delivery:
Payment:
iso14001
iso45001
iso9001
iso13485

Product Introduction

Overview

The AD8572AR, produced by Analog Devices Inc., is a dual-channel, zero-drift, operational amplifier (op amp) known for its high accuracy and low cost. This amplifier features a rail-to-rail input and output swing, making it suitable for a wide range of applications. The AD8572AR operates from a single-supply voltage as low as 2.7 V and up to 5 V, and it is designed to provide ultralow offset, drift, and bias current, which are critical for precise measurements and low distortion in AC signals.

Key Specifications

Parameter Symbol Conditions Min Typ Max Unit
Input Offset Voltage VOS VS = 5 V, VCM = 2.5 V, VO = 2.5 V, TA = 25°C 1 5 μV
Input Bias Current IB −40°C ≤ TA ≤ +125°C 10 50 pA
Common-Mode Rejection Ratio CMRR VCM = 0 V to 5 V 115 130 dB
Large Signal Voltage Gain AVO RL = 10 kΩ, VO = 0.3 V to 4.7 V 110 140 dB
Offset Voltage Drift ΔVOS/ΔT −40°C ≤ TA ≤ +125°C 0.005 0.04 μV/°C
Output Voltage High VOH RL = 100 kΩ to GND 4.99 4.998 V
Supply Current per Amplifier ISY VO = 0 V 750 975 μA
Overload Recovery Time tOR 0.05 0.3 ms

Key Features

  • Zero-Drift Technology: Eliminates intermodulation effects and provides high accuracy without the need for external capacitors.
  • Low Input Bias Current: Typically 10 pA, ensuring minimal input current errors.
  • Rail-to-Rail Input and Output: Allows the input common-mode voltage range to reach both supply rails, enhancing versatility in various applications.
  • Low Supply Current: Approximately 750 μA per op amp, making it power-efficient.
  • High Common-Mode Rejection Ratio (CMRR): Up to 130 dB, ensuring good rejection of common-mode signals.
  • Low Offset Voltage Drift: As low as 0.005 μV/°C, minimizing temperature-induced errors.

Applications

  • Temperature Sensors: Ideal for precise temperature measurements due to its low drift and high accuracy.
  • Pressure Sensors: Suitable for pressure sensing applications requiring high precision and low noise.
  • Precision Current Sensing: Used in applications where accurate current measurement is critical.
  • Strain Gage Amplifiers: Enhances the signal quality from strain gages with its high precision and low noise characteristics.
  • Medical Instrumentation: Applicable in medical devices where high accuracy and low distortion are essential.
  • Thermocouple Amplifiers: Suitable for thermocouple applications due to its ability to handle low-level signals with high precision.
  • Automotive Applications: Used in various automotive sensing and measurement applications requiring high precision and reliability.

Q & A

  1. What is the typical input bias current of the AD8572AR?

    The typical input bias current is 10 pA.

  2. What is the operating voltage range for the AD8572AR?

    The AD8572AR operates from a single-supply voltage as low as 2.7 V and up to 5 V.

  3. What is the common-mode rejection ratio (CMRR) of the AD8572AR?

    The CMRR is up to 130 dB.

  4. Does the AD8572AR require external capacitors?

    No, the AD8572AR does not require external capacitors due to its zero-drift technology.

  5. What is the typical supply current per amplifier for the AD8572AR?

    The typical supply current per amplifier is approximately 750 μA.

  6. What is the overload recovery time of the AD8572AR?

    The overload recovery time is between 0.05 ms and 0.3 ms.

  7. What are some common applications of the AD8572AR?

    Common applications include temperature sensors, pressure sensors, precision current sensing, strain gage amplifiers, medical instrumentation, and thermocouple amplifiers.

  8. What is the offset voltage drift of the AD8572AR?

    The offset voltage drift is as low as 0.005 μV/°C.

  9. What is the output voltage high for the AD8572AR?

    The output voltage high is typically between 4.99 V and 4.998 V for a load resistance of 100 kΩ to GND.

  10. What package options are available for the AD8572AR?

    The AD8572AR is available in an 8-SOIC package.

Product Attributes

Amplifier Type:Zero-Drift
Number of Circuits:2
Output Type:Rail-to-Rail
Slew Rate:0.4V/µs
Gain Bandwidth Product:1.5 MHz
-3db Bandwidth:- 
Current - Input Bias:160 pA
Voltage - Input Offset:1 µV
Current - Supply:850µA (x2 Channels)
Current - Output / Channel:30 mA
Voltage - Supply Span (Min):2.7 V
Voltage - Supply Span (Max):5 V
Operating Temperature:-40°C ~ 125°C
Mounting Type:Surface Mount
Package / Case:8-SOIC (0.154", 3.90mm Width)
Supplier Device Package:8-SOIC
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Similar Products

Part Number AD8572AR AD8572ARZ AD8572ARU AD8574AR AD8552AR AD8571AR
Manufacturer Analog Devices Inc. Analog Devices Inc. Analog Devices Inc. Analog Devices Inc. Analog Devices Inc. Analog Devices Inc.
Product Status Obsolete Active Obsolete Obsolete Obsolete Obsolete
Amplifier Type Zero-Drift Zero-Drift Zero-Drift Zero-Drift Zero-Drift Chopper (Zero-Drift)
Number of Circuits 2 2 2 4 2 1
Output Type Rail-to-Rail Rail-to-Rail Rail-to-Rail Rail-to-Rail Rail-to-Rail Rail-to-Rail
Slew Rate 0.4V/µs 0.4V/µs 0.4V/µs 0.4V/µs 0.4V/µs 0.4V/µs
Gain Bandwidth Product 1.5 MHz 1.5 MHz 1.5 MHz 1.5 MHz 1.5 MHz 1.5 MHz
-3db Bandwidth - - - - - -
Current - Input Bias 160 pA 160 pA 160 pA 1 nA 10 pA 10 pA
Voltage - Input Offset 1 µV 1 µV 1 µV 1 µV 1 µV 1 µV
Current - Supply 850µA (x2 Channels) 850µA (x2 Channels) 850µA (x2 Channels) 850µA (x4 Channels) 850µA (x2 Channels) 850µA
Current - Output / Channel 30 mA 30 mA 30 mA 30 mA 30 mA 30 mA
Voltage - Supply Span (Min) 2.7 V 2.7 V 2.7 V 2.7 V 2.7 V 2.7 V
Voltage - Supply Span (Max) 5 V 5 V 5 V 5 V 5 V 5.5 V
Operating Temperature -40°C ~ 125°C -40°C ~ 125°C -40°C ~ 125°C -40°C ~ 125°C -40°C ~ 125°C -40°C ~ 125°C
Mounting Type Surface Mount Surface Mount Surface Mount Surface Mount Surface Mount Surface Mount
Package / Case 8-SOIC (0.154", 3.90mm Width) 8-SOIC (0.154", 3.90mm Width) 8-TSSOP (0.173", 4.40mm Width) 14-SOIC (0.154", 3.90mm Width) 8-SOIC (0.154", 3.90mm Width) 8-SOIC (0.154", 3.90mm Width)
Supplier Device Package 8-SOIC 8-SOIC 8-TSSOP 14-SOIC 8-SOIC 8-SOIC

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