Datasheet AD8214 (Analog Devices)

Fast Response, High Voltage Current Shunt Comparator Data Sheet AD8214 FEATURES FUNCTIONAL BLOCK DIAGRAM Input-to-output response: <100 ns V 1 S High input common-mode voltage range Operating: 5 V to 65 V 2 Survival: 0 V to 68 V +IN 5 OUT Current output –IN 8 Hysteresis: 10 mV 2.4V REGULATOR Integrated 2.4 V regulator Wide operating temperature range: –40°C to +125°C 8-lead MSOP package V 3
001
REG Qualified for automotive applications 6
06193-
GND APPLICATIONS
Figure 1.
Overcurrent protection Motor controls Transmission controls Diesel injection controls DC-to-DC converters Power supplies Batteries GENERAL DESCRIPTION
The AD8214 is a fast response, high common-mode voltage, The input to output response time of the AD8214 is typical y current shunt comparator. The device operates on the high side less than 100 ns. This makes the device optimal for overcurrent rail of any DC current sensing application, provided the voltage protection in applications such as motor and solenoid control. is between 5 V and 65 V. Internal y, the AD8214 features a fast Built-in comparator hysteresis means that once the current comparator that is optimized for high side operation. An internal across the shunt falls back to a normal limit, the AD8214 output Zener regulator powers the circuit with respect to the high side will change states to its original level. DC rail. In addition, user access to this 2.4V regulator, allows The AD8214 is available in an 8-lead MSOP package. The for setting a comparator threshold voltage via external resistors. operating temperature range is −40°C to +125°C, and the device The AD8214 wil compare the voltage across the shunt resistor is fully qualified for automotive applications. to this user-selected threshold, and the AD8214 output will change states from low to high, indicating the current across the shunt has crossed the threshold level.
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Document Outline Features Applications Functional Block Diagram General Description Revision History Specifications Absolute Maximum Ratings ESD Caution Pin Configuration and Function Descriptions Typical Performance Characteristics Theory of Operation Comparator Offset and Hysteresis Setting the Input Threshold Voltage Input-Referred Dynamic Error Applications Typical Setup and Calculations High Side Overcurrent Detection Outline Dimensions Ordering Guide Automotive Products