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MAX3806

Maxim Integrated Products
Part Number MAX3806
Manufacturer Maxim Integrated Products
Description Receiver
Published Aug 7, 2009
Detailed Description 19-4700; Rev 0; 7/09 www.DataSheet4U.com Receiver for Optical Distance Measurement General Description The MAX3806 is ...
Datasheet PDF File MAX3806 PDF File

MAX3806
MAX3806

Overview
19-4700; Rev 0; 7/09 www.
DataSheet4U.
com Receiver for Optical Distance Measurement General Description The MAX3806 is a high-gain linear preamplifier for distance measurement applications using a laser beam.
The device operates from a single +5.
0V supply and converts current from an AC-coupled photodiode into a single-ended voltage signal.
The input accepts single pulses or bursts of pulses with widths down to 30ns.
The amplifier remains linear with input amplitudes from 42nAP (SNR = 3) to 40µAP.
It can also withstand overload signals as large as 2mAP.
The output stage is designed to drive a high-impedance load to deliver the output-voltage swing at the lowest possible power dissipation.
The gain of the preamplifier stage is selected using the GAIN pin to be 60kΩ or 30kΩ.
There is also an internal 14dB attenuator that is selected using the ATT pin.
The output stage can be disabled (high impedance).
The device is available in a 3mm x 3mm, 12-pin TQFN package and operates over the -40°C to +105°C temperature range.
♦ +5V Supply Voltage ♦ Linearity Range Up to 40µAP ♦ Overload Current Up to 2mAP ♦ 50mW Power Dissipation at +5.
0V ♦ 1.
5pA/√Hz Noise Density at 60kΩ Gain ♦ 14nARMS Input-Referred Noise at 60kΩ Gain ♦ Selectable Gains (60kΩ, 30kΩ) ♦ Selectable 14dB Attenuation Features MAX3806 Ordering Information PART TEMP RANGE PINPACKAGE TOP MARK ABN MAX3806GTC+ -40°C to +105°C 12 TQFN-EP* +Denotes a lead(Pb)-free/RoHS-compliant package.
*EP = Exposed pad.
Applications LIDAR Sensors for Automotive Applications (ACC, Stop&Go) Laser Sensors for Portable Distance Measurement Laser Sensors for Industrial Applications Pin Configuration appears at end of data sheet.
Typical Application Circuits +5V +5V TO +12V SUPPLY FILTER PIN IN C* L* GAIN +5V * L AND C SET THE LOW-FREQUENCY CUTOFF REQUIRED FOR THE APPLICATION.
DIS ATT GND SUPPLY FILTER VCC 0.
01μF 0.
01μF SINGLE-CHANNEL RECEIVER MAX3806 LINEAR LIDAR Rx OUT BUFF 0.
01μF MAX1446 ADC Typical Application Circuits cont...


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