Converting Light to Digits, LTC1099 Half Flash 8-Bit A/D Converter Digitizes Photodiode Array

LTC1099 ADC Drives the 8-Bit Microprocessor Bus and the D/A. The Current Output of the D/A Is Converted to an Output Voltage by U5, an LT1056 JFET Input Operational Amplifier. U6, an LT1022, Amplifies and Band Limits the Signal, Its Output is 0 to 5V