參數(shù)資料
型號(hào): LTC1287CI
廠商: Linear Technology Corporation
英文描述: 3V Single Chip 12-Bit Data Acquisition System
中文描述: 3V的單芯片12位數(shù)據(jù)采集系統(tǒng)
文件頁(yè)數(shù): 15/16頁(yè)
文件大?。?/td> 324K
代理商: LTC1287CI
LTC1287
15
U
S
A
O
PPLICATI
U
U
A “Quick Look” Circuit for the LTC1287
Users can get a quick look at the function and timing of
the LTC1287 by using the following simple circuit
(Figure 19). V
REF
is tied to V
CC
. V
IN
is applied to the +IN
input and the –IN input is tied to the ground plane. CS
is driven at 1/32 the clock rate by the 74HC393 and D
OUT
outputs the data. The output data from the D
OUT
pin can
be viewed on an oscilloscope that is set up to trigger on
the falling edge of CS (Figure 20). Note the LSB data is
partially clocked out before CS goes high.
Figure 19. "Quick Look" Circuit for the LTC1287
CS
D
OUT
CLK
VERTICAL: 5V/DIV
HORIZONTAL: 5
μ
s/DIV
Figure 20. Scope Trace of the LTC1287 “Quick Look” Circuit
Showing A/D Output 1010101010 (AAA
HEX
)
LSB
(B0)
NULL
BIT
+3V
LTC1287 F18
+IN
GND
V
REF
D
OUT
CLK
V
CC
CS
–IN
LTC1287
1N4148
+2.5V
Figure 18
MSB
(B11)
LSB DATA
(B1)
TO OSCILLOSCOPE
LTC1287 F19
0.1μF
V
IN
f/32
+3V
CLOCK IN
500kHz
22
μ
F TANTALUM
74HC393
A1
CLR1
1QA
1QB
1QC
1QD
GND
VCC
A2
CLR2
2QA
2QB
2QC
2QD
+
f
V
REF
D
OUT
CLK
V
CC
+IN
GND
CS
–IN
LTC1287
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 circuits as described herein will not infringe on existing patent rights.
相關(guān)PDF資料
PDF描述
LTC1287CCN 3V Single Chip 12-Bit Data Acquisition System
LTC1287BIJ 3V Single Chip 12-Bit Data Acquisition System
LTC1287BIN 3V Single Chip 12-Bit Data Acquisition System
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