Click here to ask about the production status of specific part numbers. MAX40662 Quad Transimpedance Amplifier with Input Current Clamp and Multiplexer for LiDAR General Description Benefits and Features The MAX40662 is a 4-channel transimpedance amplifier AEC-Q100 for optical distance measurement receivers in light detec- Enables ASIL Compliance (FMEDA Available upon tion and ranging (LiDAR) applications. Low noise, high Request) gain, low group delay, and fast recovery from overload Internal Multiplexer make this quad TIA ideal for time-of-flight distance-mea- Bandwidth = 440MHz (typ), 300MHz (min) surement applications. The four input transimpedance Low Noise: 2.1pA/Hz stages are multiplexed to a pair of differential outputs. Optimized for C = 0.5pF to 5pF IN Important features include 2.1pA/Hz input-referred noise Two Pin-Selectable Transimpedance Values density, an internal current input clamp (up to 2A for 10ns 25k pulses), pin-selectable 25k and 50k transimpedance, 50k and wide 440MHz bandwidth. An offset current input al- OFFSET Input Enables DC Offset Cancellation from lows optional output offset adjustment to the output volt- Photodiode at IN Input age. A low-power/standby mode can be used to help re- LP Input Reduce Power Dissipation between Pulses duce average power supply current between pulses. Internal Clamps for Input Current up to 2A for 10ns The MAX40662 is available in a 16-pin, 4mm x 4mm, Pulses TQFN package with side-wettable flanks and is specified 3.3V Operation over the -40C to +125C automotive operating tempera- 16-Pin, 4mm x 4mm TQFN Package with Side- ture range. Wettable Flanks Ordering Information appears at end of data sheet. Applications Optical Time-of-Flight Distance Measurement LiDAR Receivers Automotive Driver Assistance Systems Typical Application Circuit 2.2F 2.2F VCL 0.1F 0.1F VCL VCC LP IN1 3.3V MMAAXX4400666622 2.2F V V CC BIAS1 LVDS 50 0.1F IN2 OUTPUT 4:1 100 TTDDCC// MAX 40025/ 100 VBIAS2 MUX MAX 40026 FFPPGGAA 50 GND IN3 V APD BIAS3 VCC ARRAY RLIMIT *SET SEL0 AND SEL1 TO LOGIC 0 OR LOGIC 1 FOR IN4 CHANNEL SELECTION NEGATIV E C APD-BYPASS VBIAS4 BIAS **SET GAIN TO GND FOR 25k OR V FOR 50k CC GAIN SELECTION GAIN GND OFFSE T SEL0 SEL1 GND (*) (**) 19-100714 Rev 1 9/20MAX40662 Quad Transimpedance Amplifier with Input Current Clamp and Multiplexer for LiDAR TABLE OF CONTENTS General Description 1 Applications 1 Benefits and Features 1 Typical Application Circuit . 1 Absolute Maximum Ratings 5 Package Information . 5 16 TQFN 5 Electrical Characteristics . 5 Typical Operating Characteristics 7 Pin Configuration . 10 TQFN . 10 Pin Description 10 Functional Diagram . 12 Detailed Description 13 Operation 13 Gain Stages 13 Inputs to TIA 13 OFFSET Inputs . 13 Multiplexer . 13 LP Input . 13 Applications Information . 14 Photodiode . 14 Supply Filter 14 AC or DC-Coupling on Input 14 Input Capacitance and Its Effect 14 Input Dynamic Range of MAX40662 . 14 Layout Considerations 15 Slew Rate on the Supply Ramp . 15 Typical Application Circuits . 16 DC-Coupled Receiver 16 AC-Coupled Negative Bias APD Receiver TIA . 17 AC-Coupled Positive Bias APD Receiver TIA 18 Ordering Information 19 Revision History . 20 www.maximintegrated.com Maxim Integrated 2