Patent ID: 9123611
Filing Date: 2015-09-01
Classification: G01J,H04N

Abstract:
1. A method for passively compensating for temperature coefficient of gain in a system including a plurality of multiple pixel avalanche photo detector devices, including the steps of: (a) providing a voltage supply, a linearized thermistor consisting of a thermistor in parallel with a linearizing resistor, a divider resistor, and a source resistor having a source resistance (R (b) determining the Temperature Coefficient of Gain (TCG) for the devices; (c) determining the Temperature Coefficient of Voltage (TCV) that will compensate the TCG; (d) selecting a supply voltage (V (e) selecting a thermistor including a characteristic thermistor reference temperature (T (f) selecting a linearizing thermistor (R (g) determining the current (I where and T=Temperature for circuit operation (K); (h) determining from the thermistor current (I (i) determining the value for the source resistance (R (j) selecting values for R (k) repeating steps (h) through (j) for each different device V