MAX16913A

Remote Antenna Current-Sense Amplifier and Switches

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


Please check latest availability status for a specific part variant.

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.

MAX16913, MAX16913A: Functional Diagrams MAX16913, MAX16913A: Functional Diagrams Enlarge+

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

See parametric specs for Current Sense Amplifiers (52)


Part NumberOutput FormatVCC
(V)
VCC
(V)
ICC
(µA)
Bi-Dir. Curr. SenseGainComparatorsReferenceOper. Temp.
(°C)
Package/PinsBudgetary
Price
minmaxtypSee Notes
MAX16913 Voltage518600No13 V/V0Bandgap-40 to +105
QSOP/16
$1.28 @1k
MAX16913A 
SOIC(N)/8
$1.34 @1k

Pricing Notes:
This pricing is BUDGETARY, for comparing similar parts. Prices are in U.S. dollars and subject to change. Quantity pricing may vary substantially and international prices may differ due to local duties, taxes, fees, and exchange rates. For volume-specific and version-specific prices and delivery, please see the price and availability page or contact an authorized distributor.

MAX16913AEVKIT: Evaluation Kit for the MAX16913 and MAX16913A
Request Reliability Report for: MAX16913A 
Device   Fab Process   Technology   Sample size   Rejects   FIT at 25°C   FIT at 55°C   Material Composition  

Note : The failure rates are summarized by technology and mapped to the associated material part numbers. The failure rates are highly dependent on the number of units tested.

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