參數資料
型號: LTC1287BCJ8
廠商: LINEAR TECHNOLOGY CORP
元件分類: ADC
英文描述: 1-CH 12-BIT SUCCESSIVE APPROXIMATION ADC, SERIAL ACCESS, CDIP8
封裝: 0.300 INCH, HERMETIC SEALED, CERAMIC, DIP-8
文件頁數: 2/16頁
文件大?。?/td> 315K
代理商: LTC1287BCJ8
10
LTC1287
1287fa
DOUT
CLK
B11
HI-Z
B9
B10
LTC1287 F8a
CS
1ST BIT TEST (–) INPUT MUST
SETTLE DURING THIS TIME
tSUCS
tWHCS
tSMPL
(+) INPUT MUST SETTLE DURING THIS TIME
(+) INPUT
(–) INPUT
DOUT
CLK
B11
HI-Z
B9
B10
LTC1287 F8b
CS
1ST BIT TEST (–) INPUT MUST
SETTLE DURING THIS TIME
tWHCS
tSMPL
(+) INPUT MUST SETTLE DURING THIS TIME
(+) INPUT
(–) INPUT
“+” Input Settling
The input capacitor is switched onto the “+” input during
the sample phase (tSMPL, see Figures 8a, 8b and 8c). The
sample period can be as short as tWHCS + 0.5 CLK cycle or
as long as tWHCS + 1.5 CLK cycles before a conversion
starts. This variability depends on where CS falls relative
to CLK. The voltage on the “+” input must settle completely
within the sample period. Minimizing RSOURCE+ and C1
will improve the settling time. If large “+” input source
U
S
A
O
PPLICATI
WU
U
I FOR ATIO
resistance must be used, the sample time can be increased
by using a slower CLK frequency. With the minimum
possible sample time of 6.0
s, RSOURCE+ < 4.0k and C1
< 20pF will provide adequate settle time.
“–” Input Settling
At the end of the sample phase the input capacitor switches
to the “–” input and the conversion starts (see Figures 8a,
8b and 8c). During the conversion, the “+” input voltage is
“+” and “–” Input Settling Windows
Figure 8b. Setup Time (tSUCS) is Met
Figure 8a. Setup Time (tSUCS) is Met
相關PDF資料
PDF描述
LTC1287CCJ8 1-CH 12-BIT SUCCESSIVE APPROXIMATION ADC, SERIAL ACCESS, CDIP8
LTC1287BIJ8 1-CH 12-BIT SUCCESSIVE APPROXIMATION ADC, SERIAL ACCESS, CDIP8
LTC1287CIJ8 1-CH 12-BIT SUCCESSIVE APPROXIMATION ADC, SERIAL ACCESS, CDIP8
LTC1287CIN8 1-CH 12-BIT SUCCESSIVE APPROXIMATION ADC, SERIAL ACCESS, PDIP8
LTC1287BIN8 1-CH 12-BIT SUCCESSIVE APPROXIMATION ADC, SERIAL ACCESS, PDIP8
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