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AN239

Silicon
Part Number AN239
Manufacturer Silicon
Description Expanding ADC1 Dyanmic Range
Published Nov 27, 2007
Detailed Description www.DataSheet4U.com AN239 E X PA N D I N G ADC1 D Y N A M I C R A N G E F O R T H E Si8250 1. Introduction The Si8250 ...
Datasheet PDF File AN239 PDF File

AN239
AN239

Overview
www.
DataSheet4U.
com AN239 E X PA N D I N G ADC1 D Y N A M I C R A N G E F O R T H E Si8250 1.
Introduction The Si8250 data sheet specifies a common mode input range of 0.
6 to 1.
2 V for ADC1.
This range effectively limits the dynamic voltage output range in voltage-controlled converters.
For example, the output range for a 3.
3 V power supply designed to generate a 1.
00 V sense would have an absolute maximum dynamic range of 1.
98 to 3.
96 V.
In reality, the active regulation point would need to be something greater than 1.
98 V and less than 3.
96 V since these are on the very fringes of the common mode specification.
If a design requires wider dynamic output voltage range (e.
g.
, 2.
00–5.
70 V) t...


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