Datasheet

MAX187/MAX189
+5V, Low-Power, 12-Bit Serial ADCs
11Maxim Integrated
Figure 8. MAX187/MAX189 Interface Timing Sequence
Figure 9. MAX187/MAX189 Detailed Serial-Interface Timing
CS
SCLK
DOUT
INTERFACE IDLE
CONVERSION
IN PROGRESS
EOC
A/D
STATE
TRACK
CONVERSION
0
TRAILING
ZEROS
IDLE
0.5µs
(t
CS
)
TOTAL = 12.25µs
CONV. 1
CLOCK OUTPUT DATA
TRACK
12 x 0.250µs = 3.25µs
B11 B10 B9 B8 B7 B6 B5 B4 B3 B2 B1 B0
14 812
MINIMUM
CYCLE TIME
8.5µs
(t
CONV
)
0µs
EOC
0µs
CS
SCLK
DOUT
INTERNAL
T/H
(TRACK)
t
CS0
t
DV
t
APR
(HOLD) (TRACK)
B2 B1 B0
t
CH
t
DO
t
CL
t
TR
t
CONV
t
CS