CAT525 Datasheet, PDF (9/12 Pages) Catalyst Semiconductor – Configured Digitally Programmable Potentiometer (DPP™): Programmable Voltage Applications

APPLICATION CIRCUITS (Cont.)
+5V
1.0 µF
VREF
VDD
VREFH
COAPTT552055
VPP
DPP 1
CS
DI
DO
PROG
CLK
DPP 2
DPP 3
DPP 4
GND
VREFL
VIN
+ ^{LM 339}
–
10K
+5V
+
–
+
–
10K
+5V
+
–
+
–
10K
+5V
+
–
+
–
10K
+5V
+
–
+
–
10K
+5V
+
–
WINDOW 1
WINDOW 2
WINDOW 3
WINDOW 4
WINDOW 5
CAT525
VREF
VOUT 1
VOUT 2
WINDOW 1
WINDOW 2
WINDOW 3
VOUT 3
VOUT 4
GND
WINDOW 4
WINDOW 5
WINDOW STRUCTURE
+5V
1.0 µF
VREF
VDD
VREFH
CAT525
VPP
DPP 1
CS
DI
DO
PROG
CLK
DPP 2
DPP 3
DPP 4
GND
VREFL
Staircase Window Comparator
VIN
+ ^{LM 339}
–
10K
+5V
+
–
WINDOW 1
+
–
10K
+5V
+
–
WINDOW 2
+
–
10K
+5V
+
–
WINDOW 3
VREFH
VOUT 2
VOUT 1
VOUT 4
VOUT 3
GND
WINDOW 1
WINDOW 2
WINDOW 3
WINDOW STRUCTURE
Overlapping Window Comparator
9
Doc. No. 25078-00 4/01 - A M-1