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High-Bandwidth Automotive Transimpedance Amplifier with Fast Output Recovery and Input Current Clamp for LiDAR

High Bandwidth TIA with Low Power Mode for Automotive LiDAR Applications

Product Details

Parametric specs for Transimpedance Amplifiers (TIA)
VSUPPLY (V) 3.3
ICC (mA) (typ) 41.5
Input Noise (nA) (max) 44
Bandwidth (MHz) (min) 200
IIN (µA) (max) 1000
ZT (kΩ) 50
Package/Pins TDFN-CU/10
Parametric specs for Operational Amplifiers
Unity Gain BW (MHz) (typ) 200
VSUPPLY (Total) (V) (min) 2.97
VSUPPLY (Total) (V) (max) 3.6
# Amplifiers 1
AV (V/V) 25000
50000
Package/Pins TDFN-CU/10
Budgetary
Price (See Notes)
3.96
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Simplified Block Diagram

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Parameters

Parametric specs for Transimpedance Amplifiers (TIA)
VSUPPLY (V) 3.3
ICC (mA) (typ) 41.5
Input Noise (nA) (max) 44
Bandwidth (MHz) (min) 200
IIN (µA) (max) 1000
ZT (kΩ) 50
Package/Pins TDFN-CU/10
Parametric specs for Operational Amplifiers
Unity Gain BW (MHz) (typ) 200
VSUPPLY (Total) (V) (min) 2.97
VSUPPLY (Total) (V) (max) 3.6
# Amplifiers 1
AV (V/V) 25000
50000
Package/Pins TDFN-CU/10
Budgetary
Price (See Notes)
3.96

Key Features

  • AEC-Q100
  • Enables ASIL Compliance (FMEDA Available UponRequest)
  • MAX40660
    • Optimized for CIN = 0.25pF to 5pF
    • Bandwidth = 490MHz (Typ)
  • MAX40661
    • Optimized for CIN = 5pF to 12pF
    • Bandwidth (CIN = 10pF) = 160MHz (Typ), 100MHz (Min)
  • Low Noise
  • Two Pin-Selectable Transimpedance Values
    • 25kΩ
    • 50kΩ
  • Internal Clamp For Input Current Up To 2A (Transient)
  • Fast Overload Recovery: 2ns at 100mA
  • Offset Input Provides Offset Adjust Feature
  • LP Input Reduces Power Dissipation Between Pulses
  • 3.3V Operation
  • 10-Pin TDFN (Side-Wettable) or Bare Die

Applications/Uses

  • Automotive Applications
  • Autonomous Driving Systems
  • Industrial Safety Systems
  • LIDAR Receivers
  • Optical Distance Measurement

Description

The MAX40660/MAX40661 are transimpedance amplifiers for optical distance measurement receivers in LiDAR applications. Low noise, high gain, low group delay, and fast recovery from overload make these TIAs ideal for distance-measurement applications. Important features include 2.1pA input-referred noise density (MAX40660), an internal input clamp, pin-selectable 25kΩ and 50kΩ transimpedance, and wide bandwidth (490MHz (typ) for the MAX40660 with 0.5pF input capacitance and 25kΩ transimpedance; 160MHz (typ) for the MAX40661 with 10pF input capacitance). An offset current input allows optional adjustment of input offset current. A low-power/standby control input reduces the supply current by better than 80% to help reduce average power supply current between pulses. The MAX40660/MAX40661 transimpedance amplifiers feature AEC-Q100 qualification over the -40°C to +125°C automotive operating temperature range and are available in a 3mm x 3mm, 10-lead TDFN package with side-wettable flanks, making them excellent choices for automotive LiDAR applications.

In addition to the TDFN package, the MAX40660 is available as bare die.

Simplified Block Diagram

MAX40660, MAX40661: Simplified Block Diagram MAX40660, MAX40661: Simplified Block Diagram Zoom icon

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 .