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MAX4008：High-Accuracy, 76V, High-Side Current Monitors in SOT23

High-Voltage, 76V, High-Side Current Monitors Sense Currents from 10nA to 10mA

The MAX4007/MAX4008 precision, high-side, high-voltage current monitors are specifically designed for monitoring photodiode current in fiber applications. They offer a connection point for the reference current and a monitor output that produces a signal proportional to the reference current. The monitor output of the MAX4007 is a current proportional to the reference current. The monitor output of the MAX4008 is a voltage proportional to the reference current. The current monitors have six decades of dynamic range and monitor reference currents of 250nA to 2.5mA with better than 5% accuracy. The photodiode current can be monitored from 10nA to 10mA with reduced accuracy. The MAX4007/MAX4008 accept a supply voltage of +2.7V to +76V, suitable for APD or PIN photodiode applications. Internal current limiting (20mA, typ) protects the devices against short circuit to ground. A clamp diode protects the monitor output from overvoltage. Additionally, these devices feature thermal shutdown if the die temperature reaches +150°C. The MAX4007/MAX4008 are available in tiny, spacesaving 6-pin SOT23 packages, and operate over the extended temperature range of -40°C to +85°C.

Key Features Wide Reference Current Dynamic Range Extended 10nA to 10mA with 10% Monitor Accuracy Current (MAX4007) or Voltage (MAX4008) Monitor Outputs Reference Current-Limit Protection (20mA, typ) Voltage Clamp Protects Subsequent Output Circuitry +2.7V to +76V Wide Voltage Range Operation 6-Pin SOT23 Packages

MAX4007, MAX4008: Typical Application Circuit Applications/Uses Consumer Electronics Current-to-Voltage Conversion Laboratory Instrumentation Level Translation Medical Instrumentation Photodiode Current-Monitoring Systems Portable Instrumentation

DataSheet

Parametrics

Quality and Environmental Data

• MAX4008.pdf

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