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CAT523_04 Datasheet, PDF (9/11 Pages) Catalyst Semiconductor – Configured Digitally Programmable Potentiometer | |||
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APPLICATION CIRCUITS (Cont.)
+5V
2.2K
VDD
VREFH 4.7 µA
LM385-2.5
+15V
CONTROL
& DATA
DPP
CAT523
+5V
10K
+
â
10K
DPP
GND
VREFL
5 meg
+
â
5 meg
ISINK = 2 - 255 mA
2N7000
39â¦1W
39⦠1W
2N7000
3.9K
1 mA steps
5 µA steps
10K
10K
â
TIP 30
+
CONTROL
& DATA
-15V
Current Sink with 4 Decades of Resolution
+15V
51K
10K
+5V
VDD
VREFH
+
TIP 29
â
10K
DPP
CAT523
DPP
5 meg
5 meg
â
+
5 meg
5 meg
39 ⦠1W
39 ⦠1W
BS170P
3.9K
1 mA steps
GND
VREFL
â
+
LM385-2.5
BS170P
5 µA steps
-15V
ISOURCE = 2 - 255 mA
Current Source with 4 Decades of Resolution
CAT523
9
Doc. No. 2005, Rev. E
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