I have a technical question asking how to use this IC in my application.
I am converting 0 to 5Vdc from a potentiometer to a 12-bit digital representation using a 12-bit parallel output ADC IC. This IC is an LTC1273BCN. :I have attached the datasheet in this link.
I am reading these 12 bits with 12 digital inputs on a FPGA. The IC is powered with 5Vdc.
But I don't understand some pin connections on the IC. Below is my understanding of the IC:
Pin 24: +5Vdc supply
Pin 23: Ground
Pin 1: Analog input from potentiometer
Pin 3: Ground from potentiometer supply
Pins 4-11 and 13-16: ADC output 12-bits
What are the rest of the pins used for (pins 2, 19, 20, 21 and 22)?
How are these used in the ADC process? I would like the ADC chip to continuously convert the analog output without being told to do so by the FPGA. Or is this how the IC is designed to function?