Hello, To answer your questions: 1. What is the output of LM9833 and where to see it? Response : The 16 bit ADC data output(s) of the LM9833 are on pins D0 (LSB) -D15 (MSB). 2. Is this IC pre programmed if not how to use this IC? Response : The LM9833 uses the USB digital interface for register read / write (pins SDA and SCL). The LM9833 registers have default power-on states, but there is significant periphery / external functionality required to make one of these "work". The device is meant to allow a system-on-a-chip solution for a scanner (including illumination control, motor control, etc.). If you let me konw what you are planning to do, I might be able to offer more help. Regards, Hooman
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