Quad Transimpedance Amplifier with Input Current Clamp and Multiplexer for LiDAR

High-Bandwidth Quad TIA with Input Multiplexer for Automotive LIDAR Applications

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The MAX40662 is a 4-channel transimpedance amplifier for optical distance measurement receivers in light detection and ranging (LiDAR) applications. Low noise, high gain, low group delay, and fast recovery from overload make this quad TIA ideal for time-of-flight distance-measurement applications. The four input transimpedance stages are multiplexed to a pair of differential outputs. Important features include 2.1pA/ input-referred noise density, an internal current input clamp (up to 2A for 10ns pulses), pin-selectable 25kΩ and 50kΩ transimpedance, and wide 440MHz bandwidth. An offset current input allows optional output offset adjustment to the output voltage. A low-power/standby mode can be used to help reduce average power supply current between pulses.

The MAX40662 is available in a 16-pin, 4mm x 4mm, TQFN package with side-wettable flanks and is specified over the -40°C to +125°C automotive operating temperature range.

MAX40662: Functional Diagram MAX40662: Functional Diagram Enlarge+

Key Features

  • AEC-Q100
  • Enables ASIL Compliance (FMEDA Available upon Request)
  • Internal Multiplexer
  • Bandwidth = 440MHz (typ), 300MHz (min) 
  • Low Noise: 2.1pA/
  • Optimized for CIN = 0.5pF to 5pF
  • Two Pin-Selectable Transimpedance Values
    • 25kΩ
    • 50kΩ
  • OFFSET Input ​Enables DC Offset Cancellation from Photodiode at IN_ Input
  • LP Input Reduce Power Dissipation bBetween Pulses
  • Internal Clamps for Input Current Upto 2A For 10ns Pulses
  • 3.3V Operation
  • 16-Pin, 4mm x 4mm TQFN Package with Side-Wettable Flanks


  • Automotive Driver Assistance Systems
  • LIDAR Receivers
  • Optical Time-Of-Flight Distance Measurement

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.

MAX40662EVKIT: Evaluation Kit for the MAX40662

Tools & Models

  • MAX40662 Orcad Library
  • Request Reliability Report for: MAX40662 
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    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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  • MAX40662
    Quad Transimpedance Amplifier with Input Current Clamp and Multiplexer for LiDAR

    • AEC-Q100
    • Enables ASIL Compliance (FMEDA Available upon Request)
    • Internal Multiplexer