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參數(shù)資料
| 型號： | LTC1291DI |
| 廠商： | Linear Technology Corporation |
| 英文描述： | Single Chip 12-Bit Data Acquisition System |
| 中文描述： | 單芯片12位數(shù)據(jù)采集系統(tǒng) |
| 文件頁數(shù)： | 19/20頁 |
| 文件大?。?/td> | 376K |
| 代理商： | LTC1291DI |
19
LTC1291
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.
U
S
A
O
PPLICATI
U
U
data is output MSB-first. CS is driven at 1/64 the clock
frequency by the 74HC393 and D
OUT
outputs the data.
The output data from the D
OUT
pin can be viewed on a
oscilloscope that is set up to trigger on the falling edge
of CS (Figure 17).
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
IN
is tied to V
CC
. This requires V
IN
be
applied to CH1 with respect to the ground plane. The
Figure 16. “Quick Look” Circuit for the LTC1291
A1
CLR1
1QA
1QB
1QC
1QD
GND
V
CC
A2
CLR2
2QA
2QB
2QC
2QD
74HC393
0.1
μ
F
V
IN
TO OSCILLOSCOPE
0.1
μ
F
+
5V
22
μ
F TANTALUM
f
f/64
CLOCK IN 1MHz
LTC1291 F16
V
CC
(V
REF
)
CLK
D
OUT
D
IN
LTC1291
CS
CH0
CH1
GND
CLK
CS
D
OUT
NULL
BIT
MSB
(B11)
LSB
(B0)
FILLS WITH
ZEROES
VERTICAL: 5V/DIV
HORIZONTAL: 5
μ
s/DIV
Figure 17. Scope Trace of the LTC1291 "Quick Look"
Circuit Showing Output 101010101010 (AAA
HEX
)
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