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MAX16913, MAX16913A

Remote Antenna Current-Sense Amplifier and Switches

Precision Current-Sense Amplifier and Integrated High-Voltage Switches Protect Phantom Power to Automotive LNA

Product Details

Key Features

Parametric specs for Current Sense Amplifiers
Output Format Voltage
VCC (V) (min) 5
VCC (V) (max) 18
ICC (µA) (typ) 600
Bi-Dir. Curr. Sense No
Gain 13 V/V
Oper. Temp. (°C) -40 to +105
Package/Pins QSOP/16
Budgetary
Price (See Notes)
1.36
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Simplified Block Diagram

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Parameters

Parametric specs for Current Sense Amplifiers
Output Format Voltage
VCC (V) (min) 5
VCC (V) (max) 18
ICC (µA) (typ) 600
Bi-Dir. Curr. Sense No
Gain 13 V/V
Oper. Temp. (°C) -40 to +105
Package/Pins QSOP/16
Budgetary
Price (See Notes)
1.36

Key Features

  • Switch Phantom Power-On/-Off Under µC Control
  • Analog Current Measurement Output
  • Adjustable Current Limiting (340mA Maximum)
  • Detect Open-Load and Short-Circuit Conditions
  • Provide Open-Drain Fault Signals (Active-Low SC and Active-Low OL)
  • Overcurrent Blanking During Startup
  • Thermal Shutdown
  • AEC-Q100 Qualified (/V Versions Only)
  • -40°C to +105°C Operating Temperature Range

Applications/Uses

  • Automotive Safety and Infotainment
  • Remote LNA Phantom Power

Description

The MAX16913/MAX16913A high-voltage high-side current-sense switches feature internal current limiting to prevent system damage due to fault conditions. The MAX16913/MAX16913A input voltage range extends from 5V to 18V, making them ideal for providing phantom power to remote radio-frequency low-noise amplifiers (LNAs) in automotive applications.

The MAX16913/MAX16913A monitor the load current and provide an analog output voltage proportional to the sensed load current. In addition to current sensing, accurate internal current-limiting circuitry protects the input supply against both overload and short-circuit conditions. Two open-drain fault indicator outputs notify the microprocessor when a short circuit, an open-load condition, or a short-to-battery condition exists. For the MAX16913A, the open-load threshold is externally adjustable using a resistive divider.

A fault-blanking feature enables the circuit to ignore momentary faults, such as those caused by the initial charging of a capacitive load when hot swapping, preventing false alarms to the system. Built-in thermal-overload protection turns off the switch when the die temperature exceeds +150°C (min). The MAX16913/MAX16913A also feature a short-to-battery detection every time the internal switch turns on. These devices provide an active-high control input to put the devices in low-power shutdown mode.

The MAX16913/MAX16913A are available in the 16-pin QSOP package and operate over the -40°C to +105°C temperature range.

Simplified Block Diagram

MAX16913, MAX16913A: Functional Diagrams MAX16913, MAX16913A: Functional Diagrams Zoom icon

Technical Docs

Support & Training

Search our knowledge base for answers to your technical questions.

Filtered Search

Our dedicated team of Applications Engineers are also available to answer your technical questions. Visit our support portal .