Datasheet

LTC6912
24
6912fa
Linear Technology Corporation
1630 McCarthy Blvd., Milpitas, CA 95035-7417
[phone]
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FAX: [phone]
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www.linear.com © LINEAR TECHNOLOGY CORPORATION 2004
LT/LT 1005 REV A • PRINTED IN USA
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U
TYPICAL APPLICATIO
INA
AGND
INB
1µF
0.1µF
CHANNEL A
INPUT
CHANNEL B
INPUT
V
OUT
(TO ADC)
OUT A
OUT B
LTC6912-X
V
+
V
+
V
–
SHDN
CS/LD
DATA
CLK
SHDN
CS/LD
D
IN
5
6
7
8
10
9
DGND
D
OUT
2
12 14
3
4
15
13
CHB CHA
3-WIRE
SPI
INTERFACE
6912 TA02
MUX OPERATION: IF THE LOWER NIBBLE (Q3, Q2, Q1, Q0) IS (1, 0, 0, 0) THEN OUTA IS IN
TRI-STATE AND THE UPPER NIBBLE (Q7, Q6, Q5, Q4) CONTROLS THE ACTIVE CHANNEL B.
IF THE UPPER NIBBLE IS (1, 0, 0, 0) THEN OUTB IS IN TRI-STATE
AND THE LOWER NIBBLE CONTROLS ACTIVE CHANNEL A.
A 2:1 PGA MUX