bigal_scorpio
Active Member
Hi to all,
I have built a voltmeter for my car after some battery problems and used a MAX1496 IC which the datasheet has Voltmeter as one of its applications.
My problem is that I cant seem to get the voltage within range of the analog input of the IC. I have a 10k resistor from -Ain(which is grounded) to +Ain and a 1m resistor from +Ain to my cars + supply. The display goes overrange as soon as the supply is connected !
I have the Range pin grounded as in the Sheet for 0 to 2v as opposed to pulled high for the 200mV range and I am still getting no joy.
Could anyone look over the sheet for me and advise on how I should be connecting the supply to +Ain please. I have attached the sheet below.
Thanks......Al
I have built a voltmeter for my car after some battery problems and used a MAX1496 IC which the datasheet has Voltmeter as one of its applications.
My problem is that I cant seem to get the voltage within range of the analog input of the IC. I have a 10k resistor from -Ain(which is grounded) to +Ain and a 1m resistor from +Ain to my cars + supply. The display goes overrange as soon as the supply is connected !
I have the Range pin grounded as in the Sheet for 0 to 2v as opposed to pulled high for the 200mV range and I am still getting no joy.
Could anyone look over the sheet for me and advise on how I should be connecting the supply to +Ain please. I have attached the sheet below.
Thanks......Al