LT1787HVCS8

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LT1787HVCS8

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Current Sense Amplifiers LT1787 - Precision, High Side Current Sense Amplifiers

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仕様

属性

概要

Description

The LT1787HVCS8 is a high-performance, precision current sense amplifier designed by Linear Technology (now part of Analog Devices). This device is commonly used for accurate current measurement in a wide range of applications, including battery management systems, power management, and motor control. The "HV" in its name indicates its high voltage capability, making it suitable for applications with higher voltage requirements.
The LT1787HVCS8 features a wide operating voltage range and offers excellent accuracy and stability over temperature variations. It can handle common-mode voltages that extend beyond the power supply rails, providing flexibility in various circuit configurations. The device is housed in an 8-lead SOIC (Small Outline Integrated Circuit) package, which facilitates easy integration into circuit boards.
Its design provides low offset voltage and a high common-mode rejection ratio (CMRR), which are critical for precision sensing applications. The LT1787HVCS8 is widely used in situations where efficient and precise current monitoring is essential for system performance and reliability.

Equivalent

The LT1787HVCS8 is a high-voltage, high-side current sense amplifier by Analog Devices. Equivalent products include:
1. MAX4080 by Maxim Integrated - a high-side current-sense amplifier.
2. INA139 by Texas Instruments - a high-side, voltage-output current-shunt monitor.
3. ZXCT1107 by Diodes Incorporated - a high-side current monitor.
4. AD8210 by Analog Devices - a high voltage, high-side current sense amplifier.
These alternatives may vary in specific specs, so verify compatibility based on the application requirements.

Features

The LT1787HVCS8 is a precision high-side current sense amplifier from Analog Devices. It is designed to monitor bidirectional currents across a sense resistor and output a proportional voltage. Key features include:
1. Wide Supply Voltage Range: Operates from 2.5V to 60V, making it suitable for a variety of applications.
2. High Common-Mode Voltage: Handles common-mode voltages up to 60V.
3. Precision Performance: Offers low offset voltage and drift, ensuring accurate current sensing.
4. Bidirectional Capability: Can measure current in both directions, ideal for applications requiring current reversal monitoring.
5. Low Power Consumption: Features low quiescent current, enhancing efficiency in power-sensitive applications.
6. Output Options: Provides both voltage output and current output options, enabling flexible interfacing.
7. Application Versatility: Suitable for use in automotive, industrial, and power management systems.
8. Package: Available in an 8-lead SOIC package, facilitating easy integration into designs.
These features make the LT1787HVCS8 a robust choice for high-side current sensing in demanding environments.

Pinout

The LT1787HVCS8 is an 8-pin device typically used in current sensing applications. It is designed to amplify the voltage across a shunt resistor to provide a proportional output voltage. Here’s a brief overview of its pin functions:
1. V+: Power supply pin.
2. OUT: Output pin that provides the amplified voltage signal proportional to the current through the shunt resistor.
3. GND: Ground pin for the device.
4. V-: Negative input for the differential amplifier.
5. V+ (Input): Positive input for the differential amplifier.
6. REF: Reference voltage pin. This allows the output voltage to be adjusted for various system requirements.
7. N/C: No Connection, usually not internally connected.
8. N/C: No Connection, usually not internally connected.
The LT1787HVCS8 is commonly used in applications such as battery monitoring, power management, and overcurrent protection, where precise current measurement is crucial.

Manufacturer

The LT1787HVCS8 is manufactured by Analog Devices, Inc. Analog Devices is a multinational semiconductor company specializing in the design and manufacturing of analog, mixed-signal, and digital signal processing (DSP) integrated circuits. Founded in 1965 and headquartered in Norwood, Massachusetts, Analog Devices provides a wide range of products and solutions for customers in various industries, including communications, computer, industrial, instrumentation, automotive, and consumer electronics. The company is well-known for its high-performance data converters, amplifiers, power management products, and other integrated circuits used in electronic systems.

Application

The LT1787HVCS8 is a high-side current sense amplifier used in various applications where monitoring and protection of current flow are critical. Key application areas include:
1. Battery management systems to monitor charge and discharge currents.
2. Power supply current monitoring for efficiency and fault detection.
3. Motor control systems for current feedback to ensure proper operation and protection.
4. Overcurrent protection circuits to prevent damage to components.
5. Telecommunications equipment for power monitoring.
6. Automotive systems for monitoring current in various electronic subsystems.
7. Industrial control systems for current measurement in machinery and equipment.
These applications leverage the LT1787HVCS8’s ability to accurately measure high-side currents while maintaining a wide operating voltage range.

Package

The LT1787HVCS8 is an integrated circuit that comes in an 8-lead SOIC (Small Outline Integrated Circuit) package. This package type is commonly used for surface-mount technology in electronic assemblies, offering a compact form factor suitable for limited space applications.

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