Datasheet

9
LTC1257
U
SA
O
PP
L
IC
AT
ITY
P
I
CA
L
Auto Ranging 8-Channel ADC with Shutdown
12-Bit Single 5V Control System with Shutdown
5V
1µF
CONTORL
OUTPUT
V
CC
V
REF
GND
V
OUT
D
IN

CLK
LOAD
D
OUT

LTC1257
1257 TA04
2N3906
–IN
CB/POWER DOWN
CLK
DATA
DAC LOAD
–
+
V
CC
CS
D
OUT

CLK
+IN
LTC1297
ADC
V
REF
GND
0.1µF
10µF
V
IN
LT1025A
COMMONGND
J
74k
1k
10µF
+
–
100k 10k
100k
1µF
47k
LTC1050
µP
5V
0.1µF
V
CC
V
REF
V
OUT
D
IN

CLK
LOAD
D
OUT

LTC1257
V
CC
V
REF
GND
V
OUT
D
IN

CLK
LOAD
D
OUT

LTC1257
1257 TA02
0.1µF
0.1µF
100Ω
100Ω
µP
8 ANALOG
INPUT CHANNELS
LTC1296
CS
D
OUT

CLK
D
IN
CH0
•
•
•
CH7
COM
REF
+
REF
–
SSO
22µF
5V
50k
50k
V
CC
74HC04
GND