CAT523_07 Datasheet, PDF (11/15 Pages) Catalyst Semiconductor – Dual Digitally Programmable Potentiometer (DPP™) with 256 Taps and Microwire Interface

51kΩ
+5V
V_DD
V_REFH
DPP1
5MΩ
CONTROL
& DATA
CAT523
10kΩ
5MΩ
–
+
CAT523
+15V
+
TIP29
–
10kΩ
39Ω 1W
39Ω 1W
BS170P
1mA steps
DPP2
5MΩ
5MΩ
3.9kΩ
GND
V_REFL
–
+
BS170P
5µA steps
LM385-2.5
-15V
Current Source with 4 Decades of Resolution
I_SOURCE = 2 ÷ 255mA
© Catalyst Semiconductor, Inc.
11
Characteristics subject to change without notice
Doc. No. MD-2005 Rev. G