MAX3806GTC+

The MAX3806GTC+ is a receiver for optical distance measurement in 12 pin TQFN package. The 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 60Kohm or 30Kohm. There is also an internal 14dB attenuator that is selected using the ATT pin. The output stage can be disabled (high impedance).

• Power dissipation is 50mW at +5.0V
• Operating temperature range from -40°C to 105°C
• Noise density is 1.5pA/√Hz at 60kohm gain
• Input referred noise is 14nARMS at 60kohm gain

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