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CAT523 Folha de dados(PDF) 8 Page - Catalyst Semiconductor

Nome de Peças. CAT523
descrição  Configured Digitally Programmable Potentiometer
Download  11 Pages
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Fbricantes  CATALYST [Catalyst Semiconductor]
Página de início  http://www.catalyst-semiconductor.com
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CAT523 Folha de dados(HTML) 8 Page - Catalyst Semiconductor

 
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CAT523
8
Doc. No. 2005, Rev. E
APPLICATION CIRCUITS (Cont.)
Coarse-Fine Offset Control by Averaging DPP Outputs
for Single Power Supply Systems
Coarse-Fine Offset Control by Averaging DPP Outputs
for Dual Power Supply Systems
+
FINE ADJUST
DPP
COARSE ADJUST
DPP
GND
VREFL
VRE H
F
VDD
RC
127RC
+V
+5V
+VREF
-V
-VREF
Ro
R = ———————————
C
1
µA
OFFSET
VOFFSET
REF
(+V
) - (V
)
R = ———————————
o
1
µA
OFFSET
REF
(-V
) + (V
)
+
+
Digitally Trimmed Voltage Reference
Digitally Controlled Voltage Reference
CAT523
LT 1029
I > 2 mA
V+
GND
VDD
V
= 5.000V
REF
VREFH
VREFL
CONTROL
& DATA
CAT523
GND
VDD
VREFH
VREFL
CONTROL
& DATA
+
15K
10
µF
5.1V
10K
4.02 K
1.00K
10
µF
35V
LM 324
1N5231B
MPT3055EL
28 - 32V
OUTPUT
0 - 25V
@ 1A
+
FINE ADJUST
DPP
COARSE ADJUST
DPP
GND
VREFL
VREFH
VDD
RC
127RC
+V
+5V
VREF
R = —————
C
256 1
µA
VREF
*
Fine adjust gives
± 1 LSB change in V
when V
= ———
OFFSET
VREF
2
OFFSET
V OFFSET


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