CAT524 Catalyst Semiconductor, CAT524 Datasheet - Page 10

• Manufacturer Part Number: CAT524
• Description: Configured Digitally Programmable Potentiometer (DPP): Programmable Voltage Applications
• Manufacturer: Catalyst Semiconductor

CAT524
APPLICATION CIRCUITS (Cont.)
Doc. No. 25076-00 Rev. 4/01 M-1
CONTROL
& DATA
CONTROL
& DATA
+5V
GND
CAT524
V DD
Current Source with 4 Decades of Resolution
DPP
DPP
+5V
GND
Current Sink with 4 Decades of Resolution
CAT524
V DD
2.2K
DPP
DPP
V
V
REF
REF
L
H
V
V REF
REF
51K
L
H
LM385-2.5
4.7 A
5M
5M
+5V
10K
10
10K
10K
5M
–
+
–
+
-15V
5M
5M
LM385-2.5
+
–
+
–
+15V
+
–
10K
5M
+15V
BS170P
BS170P
39 1W
39 1W
3.9K
10K
–
+
I
SOURCE
TIP 29
2N7000
2N7000
39
39
3.9K
10K
-15V
= 2 - 255 mA
1W
1W
1 mA steps
5 A steps
I
SINK
TIP 30
= 2 - 255 mA
1 mA steps
5 A steps