Datasheet

DS1922L/DS1922T
Temperature Logger iButton with 8KB
Data-Log Memory
______________________________________________________________________________________ 51
Numerical Correction Example
CONVERTED DATA FROM
CALIBRATION MEMORY
ERROR VALUES
Tr1 = 60°C —
Tr2 = -10.1297°C Err2 = 0.0672°C
Tr3 = 24.6483°C Err3 = -0.1483°C
Tc2 = -10.0625°C Err1 = 0.0672°C
Tc3 = 24.5°C —
RESULTING CORRECTION
COEFFICIENTS
APPLICATION OF
CORRECTION
COEFFICIENTS TO SAMPLE
READING
B = -0.008741 —
A = 0.000175/°C T
C
= 22.500°C
C = -0.039332°C T
CORR
= 22.647°C
Note: The software correction requires floating-point arithmetic
(24 bit or better). Suitable math libraries for microcontrollers are
found on various websites and are included in cross compilers.
A1 41
000000FBC52B
1-Wire
®
i
B
u
t
t
o
n
®
.
c
o
m
Y
Y
W
W
Z
Z
Z
D
S
1
9
2
2
L
#
F
5
0
16.25mm
5.89mm
0.51mm
17.35mm
BRANDING
F5 SIZE
GND
IO
®
Thermochron
®
Pin Configuration
Thermochron is a registered trademark of Maxim Integrated Products, Inc.
Package Information
For the latest package outline information and land patterns
(footprints), go to www.maxim-ic.com/packages
. Note that a
“+”, “#”, or “-” in the package code indicates RoHS status only.
Package drawings may show a different suffix character, but
the drawing pertains to the package regardless of RoHS status.
PACKAGE
TYPE
PACKAGE
CODE
OUTLINE
NO.
LAND
PATTERN NO.
F5 iButton IB#6CB
21-0266
—