參數(shù)資料
型號(hào): LTC1287CCN8
廠商: Linear Technology
文件頁數(shù): 7/16頁
文件大?。?/td> 0K
描述: IC DATA ACQ SYS 12BIT 3V 8-DIP
標(biāo)準(zhǔn)包裝: 50
類型: 數(shù)據(jù)采集系統(tǒng)(DAS)
分辨率(位): 12 b
采樣率(每秒): 30k
數(shù)據(jù)接口: 串行,并聯(lián)
電壓電源: 單電源
電源電壓: 3V
工作溫度: 0°C ~ 70°C
安裝類型: 通孔
封裝/外殼: 8-DIP(0.300",7.62mm)
供應(yīng)商設(shè)備封裝: 8-PDIP
包裝: 管件
LTC1287
15
1287fa
U
S
A
O
PPLICATI
WU
U
I FOR ATIO
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). VREF is tied to VCC. VIN 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 DOUT
outputs the data. The output data from the DOUT 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
s/DIV
Figure 20. Scope Trace of the LTC1287 “Quick Look” Circuit
Showing A/D Output 1010101010 (AAAHEX)
LSB
(B0)
NULL
BIT
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 representation that the
interconnection of circuits as described herein will not infringe on existing patent rights.
+3V
LTC1287 F18
1N4148
+2.5V
+IN
GND
VREF
DOUT
CLK
VCC
CS
–IN
LTC1287
Figure 18
MSB
(B11)
LSB DATA
(B1)
TO OSCILLOSCOPE
LTC1287 F19
0.1
F
VIN
f/32
+3V
CLOCK IN
500kHz
22
F TANTALUM
74HC393
A1
CLR1
1QA
1QB
1QC
1QD
GND
VCC
A2
CLR2
2QA
2QB
2QC
2QD
+
f
VREF
DOUT
CLK
VCC
+IN
GND
CS
–IN
LTC1287
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