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

 

Part Number	Replacement	Explanation

Description

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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.

MAX4007, MAX4008: Typical Application Circuit Enlarge+

Key Features

• Wide Reference Current Dynamic Range
  Guaranteed 250nA to 2.5mA with 5% Monitor Accuracy
  • 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

Applications/Uses

• Consumer Electronics
• Current-to-Voltage Conversion
• Laboratory Instrumentation
• Level Translation
• Medical Instrumentation
• Photodiode Current-Monitoring Systems
• Portable Instrumentation