cat522 Catalyst Semiconductor, cat522 Datasheet - Page 9

• Manufacturer Part Number: cat522
• Description: Configured Digitally Programmable Potentiometer Dpp? Programmable Voltage Applications
• Manufacturer: Catalyst Semiconductor

APPLICATION CIRCUITS
CONTROL
& DATA
© Catalyst Semiconductor, Inc.
Characteristics subject to change without notice
CONTROL
& DATA
+5V
+5V
V
GND
CAT522
V
GND
Amplified DPP Output
CAT522
DD
DD
CONTROL
& DATA
V
V
V
I
V
V
REFH
REFL
REFH
REFL
V
DPP
For R =
V
V
OUT
OUT
R
V
GND
R
CAT522
I
DD
I
Digitally Controlled Voltage Reference
I
= 2V
=
V
V
R
OUT
DPP
F
DPP
–
+
+15V
-15V
V
–
+
V
15kΩ
+15V
-15V
= (1 +
REFH
REFL
(
R +
- V
OP 07
I
R
OP 07
Bipolar DPP Output
R
I
R
F
R
R
R
1N5231B
I
F
5.1V
F
I
F
10µF
) V
) - V
DPP
V
I
R
V
OUT
F
OUT
9
1.00kΩ
CONTROL
& DATA
+
–
DPP INPUT
MSB LSB
1111 1111
1000 0000
0111 1111
0000 0001
0000 0000
4.02kΩ
LM 324
Digitally Trimmed Voltage Reference
DPP OUTPUT
V
V
V
128
127
255
255
255
255
255
255
DPP
FS
ZERO
1
0
10kΩ
=
V
GND
×
×
×
×
×
CAT522
=
. 0
. 0
. 0
. 0
DD
. 0
. 0
28 - 32V
=
CODE
99
98
98
98
98
98
. 0
255
V
V
V
V
V
V
01
REF
REF
REF
REF
REF
REF
MPT3055EL
V
REF
10µF
35V
x (V
+
+
+
+
+
V
V
. 0
. 0
. 0
. 0
. 0
REFH
REFL
FS
01
01
01
01
01
V
V
V
V
V
- V
REF
REF
REF
REF
REF
OUTPUT
0 - 25V
@ 1A
ZERO
=
=
=
=
=
. 0
. 0
. 0
. 0
. 0
) + V
990
502
498
014
010
V
V
V
V
ZERO
V
REF
REF
REF
REF
REF
V+
Doc. No. MD-2004 Rev. G
ANALOG OUTPUT
V
R
V
V
V
V
V
OUT
REF
I
OUT
OUT
OUT
OUT
LT 1029
=
I > 2mA
R
CAT522
=
F
=
=
=
=
=
5
V
+
+
-0
-
-
V
. 4
. 0
. 4
. 4
REF
.
02
90
02
86
90
V
V
V
V
V
= 5.00V