LTC1291 Linear Technology, LTC1291 Datasheet - Page 19
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LTC1291
Manufacturer Part Number
LTC1291
Description
Single Chip 12-Bit Data Acquisition System
Manufacturer
Linear Technology
Datasheet
1.LTC1291.pdf
(20 pages)
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A “Quick Look” Circuit for the LTC1291
Users can get a quick look at the function and timing of
the LTC1291 by using the following simple circuit
(Figure 16). D
applied to CH1 with respect to the ground plane. The
A
PPLICATI
IN
O
is tied to V
V
U
IN
S
I FOR ATIO
U
Information furnished by Linear Technology Corporation is believed to be accurate and reliable.
However, no responsibility is assumed for its use. Linear Technology Corporation makes no represen-
tation that the interconnection of its circuits as described herein will not infringe on existing patent rights.
CC
D
CS
CH0
CH1
GND
CLK
TO OSCILLOSCOPE
OUT
CS
. This requires V
LTC1291
Figure 17. Scope Trace of the LTC1291 "Quick Look"
Circuit Showing Output 101010101010 (AAA
W
V
CC
(V
Figure 16. “Quick Look” Circuit for the LTC1291
D
REF
CLK
OUT
D
IN
)
22 F TANTALUM
NULL
BIT
U
0.1 F
+
IN
(B11)
MSB
VERTICAL: 5V/DIV
HORIZONTAL: 5 s/DIV
be
f
data is output MSB-first. CS is driven at 1/64 the clock
frequency by the 74HC393 and D
The output data from the D
oscilloscope that is set up to trigger on the falling edge
of CS (Figure 17).
(B0)
LSB
f/64
CLOCK IN 1MHz
A1
CLR1
1QA
1QB
1QC
1QD
GND
FILLS WITH
74HC393
ZEROES
HEX
CLR2
V
2QA
2QB
2QC
2QD
CC
A2
)
OUT
LTC1291 F16
5V
0.1 F
pin can be viewed on a
OUT
outputs the data.
LTC1291
19