General 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.

Applications

● Optical Distance Measurement

● LiDAR Receivers

● Industrial Safety Systems

● Autonomous Driving Systems

● Automotive Applications

Benefits and Features

● AEC-Q100

● Enables ASIL Compliance (FMEDA Available upon

Request)

● 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