MAX187(2012) 데이터 시트보기 (PDF) - Maxim Integrated
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MAX187 Datasheet PDF : 18 Pages
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MAX187/ MAX189
+5V, Low-Power, 12-Bit Serial ADCs
CS
SCLK
DOUT
INTERFACE IDLE
A/D
TRACK
STATE
MINIMUM
CYCLE TIME
CONVERSION
IN PROGRESS
CONVERSION
0
8.5µs
(tCONV)
1
4
8
12
EOC
EOC
B11 B10 B9 B8 B7 B6 B5 B4 B3 B2 B1 B0
CLOCK OUTPUT DATA
TRACK
0µs
12 x 0.250µs = 3.25µs
TOTAL = 12.25µs
Figure 8. MAX187/MAX189 Interface Timing Sequence
TRAILING
ZEROS
IDLE
0.5µs
0µs
(tCS)
CONV. 1
CS
tCS0
SCLK
tDO
tCONV
tDV
DOUT
tAPR
INTERNAL
T/H
(TRACK)
(HOLD)
Figure 9. MAX187/MAX189 Detailed Serial-Interface Timing
tCS
tCH
tCL
tTR
B2
B1
B0
(TRACK)
Maxim Integrated
11
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