TL507, TL507C 7-bit PWM output analog-to-digital converter. Only one of the two power supply pins should be used, 3.5V < VCC < 6V; 8V < VDD < 18V. At VCC=5V the analog input range is 1.3V < AIN < 3.9V, or about 25%...75%. The RST pin can be used to synchronize the output signal to an external counter; otherwise leave RST tied to VCC. +----------+ EN |1 +--+ 8| RST CLK |2 TL 7| VDD GND |3 507 6| VCC /OUT |4 5| AIN +----------+ [This information is part of the GIICM]