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MAX3806 fiches techniques PDF

Maxim Integrated Products - Receiver

Numéro de référence MAX3806
Description Receiver
Fabricant Maxim Integrated Products 
Logo Maxim Integrated Products 





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MAX3806 fiche technique
19-4700; Rev 0; 7/09
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Receiver for Optical Distance Measurement
General Description
The MAX3806 is a high-gain linear preamplifier for dis-
tance 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 over-
load 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 dis-
sipation. 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 tem-
perature range.
Applications
LIDAR Sensors for Automotive Applications
(ACC, Stop&Go)
Laser Sensors for Portable Distance
Measurement
Laser Sensors for Industrial Applications
Features
+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
Ordering Information
PART
TEMP RANGE
PIN-
PACKAGE
MAX3806GTC+ -40°C to +105°C 12 TQFN-EP*
+Denotes a lead(Pb)-free/RoHS-compliant package.
*EP = Exposed pad.
TOP
MARK
ABN
Pin Configuration appears at end of data sheet.
Typical Application Circuits
+5V TO +12V
SUPPLY FILTER
PIN
C*
L*
+5V
SUPPLY FILTER
SINGLE-CHANNEL RECEIVER
VCC
0.01μF
IN
MAX3806
OUT
BUFF
LINEAR LIDAR Rx
GAIN DIS ATT GND
0.01μF
0.01μF
+5V
MAX1446
ADC
* L AND C SET THE LOW-FREQUENCY CUTOFF REQUIRED FOR THE APPLICATION.
Typical Application Circuits continued at end of data sheet.
________________________________________________________________ Maxim Integrated Products 1
For pricing, delivery, and ordering information, please contact Maxim Direct at 1-888-629-4642,
or visit Maxim’s website at www.maxim-ic.com.

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