Cirrus-logic CS1601 Manuel d'utilisateur
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Copyright Cirrus Logic, Inc. 2011
(All Rights Reserved)
Cirrus Logic, Inc.
http://www.cirrus.com
CS1501 & CS1601: Frequently Asked Questions
DS927FAQ1
SEP’11
CONTACTING CIRRUS LOGIC SUPPORT
For a complete listing of direct Distributor, Sales, and Sales Representative contacts,
visit the Cirrus Logic website at http://www.cirrus.com
.
Question 1: What is the variance in the link voltage due to the reference current?
The reference current is specified as 129A at 25°C.
The reference current is defined by the internal DAC current (I
dac
). Production calibration is carried out, and
the reference can be considered accurate for design purposes.
Matrix lot variation testing showed the following part-to-part variation at room temperature:
Max = +0.51%; Min = -0.61%
Question 2: What is the reference current variation over temperature?
Over the entire temperature range of -40°C to 125°C, the total variation of I
ref
is 120A to136A, with the
major swings occurring at the extremes of temperature.
Over the more normal temperature range of 0°C to +70°C, the variation is limited to -1.0% to +1.5%.
Typical variations for V
link
are shown below:
I
ref
(I
dac
) Variation over Temperature
Temperature (°C) Max(%) Mean(%) Min(%)
5 -0.17 -0.50 -1.00
25 +0.00 +0.00 +0.00
55 +1.25 +0.35 -0.07
85 +1.50 +0.24 -0.56
375
380
385
390
395
400
405
-5 5 15253545556575
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Copyright Cirrus Logic, Inc. 2011(All Rights Reserved)Cirrus Logic, Inc.http://www.cirrus.comCS1501 & CS1601: Frequently Asked QuestionsDS927FAQ
Page 2 - 2 DS927FAQ1
2 DS927FAQ1Contacting Cirrus Logic SupportFor all product questions and inquiries contact a Cirrus Logic Sales Representative. To find one nearest you
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