cat515 Catalyst Semiconductor, cat515 Datasheet - Page 10

• Manufacturer Part Number: cat515
• Description: 8-bit Quad Digital Pot With Independent Reference Inputs
• Manufacturer: Catalyst Semiconductor

CAT515
APPLICATION CIRCUITS (Cont.)
Doc. No. 25077-00 2/98 M-1
CONTROL
& DATA
CONTROL
& DATA
+5V
GND
CAT515
OPT 505
V DD
+5V
CAT515
GND
DAC
DAC
OPT 505
V DD
2.2K
DAC
DAC
Current Source with 4 Decades of Resolution
Current Sink with 4 Decades of Resolution
V
V
REF
REF
V
L
V REF
H
REF
51K
L
4.7 µA
LM385-2.5
5 meg
5 meg
+5V
10K
5 meg
10K
10K
–
+
10
–
+
-15V
LM385-2.5
5 meg
5 meg
+
–
+
–
+15V
5 meg
10K
+
–
+15V
BS170P
BS170P
–
+
39 1W
39 1W
3.9K
10K
2N7000
2N7000
I
39 1W
39 1W
SOURCE
3.9K
10K
-15V
TIP 29
I
SINK
= 2 - 255 mA
TIP 30
1 mA steps
5 µA steps
= 2 - 255 mA
1 mA steps
5 µA steps