Simple Voltmeter schematic using Maxim’s ADC with LED driver

MAX1496 is an ADC with internal 31/2 digit LED display driver. This is an ideal IC for simple voltmeters. You just need the IC, and a couple more components and you are done. The following is a circuit I made using EAGLE. This is kind of a knock off circuit I built after going through the datasheet.

Voltmeter using MAX1496

All the controls are connected to a 10pin FRC which is to be hooked to a microcontroller to automatically set the ranges. RJ1 and RJ2 controls the LED drive currents. They are made as female pin headers to insert resistors. More details will be added soon…

Datasheet : MAX1496, MAX1447, MAX1498 datasheet

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One Response to Simple Voltmeter schematic using Maxim’s ADC with LED driver

  1. madhusudan bhattacharya says:

    it seems to me that max1496 is a pretty good i.c. comparing to tl7107 type of i.c.s.
    but i cannot find it in kolkata. can you help me about where i can get it and what is the price?

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