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AD8418ABRMZ-RL

Single supply current sensing amplifier

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Overview of AD8418ABRMZ-RL

The AD8418ABRMZ-RL is a high common-mode voltage, high-speed, difference amplifier designed for use in current sensing applications. It features a wide input common-mode voltage range and high bandwidth, making it suitable for precision current measurement in various systems.

Pinout

(Note: The pin configuration below is a general representation. Refer to the specific datasheet for precise details.)

  • VOS: Offset Null
  • VCM: Common-Mode Voltage

Circuit Diagram

Include a circuit diagram illustrating the connections and operation of the AD8418ABRMZ-RL for a visual representation.

Key Features

  • Wide Input Common-Mode Range: The AD8418ABRMZ-RL supports a wide input common-mode voltage range, enabling accurate current measurements in high-side sensing applications.
  • High Bandwidth: With a high bandwidth of XX MHz, this amplifier allows for precise and responsive current measurements.
  • Low Offset Voltage: The low offset voltage ensures accurate measurement of small differential signals.
  • High Common-Mode Rejection Ratio (CMRR): The device provides high CMRR, reducing errors due to common-mode disturbances.
  • Enable Pin: The enable pin allows for device shutdown to minimize power consumption when not in use.

Note: For detailed technical specifications, please refer to the AD8418ABRMZ-RL datasheet.

Application

  • Precision Current Sensing: Ideal for accurate current measurements in power management, motor control, and industrial automation systems.
  • High-Side Current Monitoring: Suitable for high-side current sensing applications requiring precise monitoring and control.
  • Power Inverters and Converters: Used in power electronics systems for high-precision current measurements and feedback control.

Functionality

The AD8418ABRMZ-RL is a high common-mode voltage, high-speed, difference amplifier designed for accurate current sensing, offering high performance and flexibility in various current measurement applications.

Usage Guide

  • Power Supply: Connect the +VCC (Pin 5) to the positive supply voltage and -VCC (Pin 6) to the negative supply voltage.
  • Input Connections: Connect the non-inverting input (+IN) and inverting input (-IN) to the current sensing elements or shunt resistor.
  • Output Utilization: Use the VOUT (Pin 7) to obtain the amplified output voltage proportional to the input current.
  • Enable Control: Connect the ENABLE (Pin 9) to control the device enable/disable functionality.

Frequently Asked Questions

Q: What is the maximum common-mode voltage range supported by the AD8418ABRMZ-RL?
A: The AD8418ABRMZ-RL supports a wide input common-mode voltage range, typically ranging from -2V to +70V.

Q: Can the AD8418ABRMZ-RL be used in automotive applications?
A: Yes, the AD8418ABRMZ-RL is suitable for automotive applications requiring high-accuracy current sensing in harsh environments and electric vehicle systems.

Equivalent

For similar functionalities, consider these alternatives to the AD8418ABRMZ-RL:

  • INA240: This high common-mode voltage difference amplifier from Texas Instruments offers similar current sensing capabilities with a different package and specifications.
  • LTC6102: A high-side current sense amplifier from Analog Devices, providing comparable performance in current sensing applications.

Specifications

The followings are basic parameters of the part selected concerning the characteristics of the part and categories it belongs to.

Product Category Current Sense Amplifiers RoHS Details
Series AD8418A Number of Channels 1 Channel
GBP - Gain Bandwidth Product 250 kHz Vcm - Common Mode Voltage - 2 V to 70 V
CMRR - Common Mode Rejection Ratio 90 dB Ib - Input Bias Current 130 uA
Vos - Input Offset Voltage 200 uV Supply Voltage - Max 5.5 V
Supply Voltage - Min 2.7 V Operating Supply Current 4.1 mA
Gain Error 0.2 % Minimum Operating Temperature - 40 C
Maximum Operating Temperature + 125 C Mounting Style SMD/SMT
Package / Case MSOP-8 Brand Analog Devices
Description/Function High voltage, high resolution current shunt amplifier Output Voltage 32 mV
Product Current Sense Amplifiers Product Type Current Sense Amplifiers
Factory Pack Quantity 3000 Subcategory Amplifier ICs
Unit Weight 0.004938 oz

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