ADC MCP3304 howto increase input voltage up to 20V (default 5V)

May 22, 2005 1 Replies

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Hi, Greg. Your English is OK -- your post is a lot more descriptive than many others written by native speakers.

The MCP3304 is an 8 channel/4 differential channel 13-bit SAR (Successive Approximation Register) ADC (Analog-to-Digital Converter) with high input impedance (

Hi everyone,



sorry but i mistake and send this post too sci.electronics.misc



I'm using an ADC Microchip MCP 3304c, this converter has max input analog voltage = 5V, but i must measure voltage up to 20V. Tested circuits are car electronics fuel iniection components. I'm software developer so i don't understand electronics science so good. Please help me how to connect ADC and tested circuit. Max sample rate will be 600 count per second on one port. MCP 3304C specification(PDF) is here:

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Thanks, (sorry for my poor english) Gregory


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