Rainbow-electronics MAX1243 Manual de usuario descargar pdf (Pagina 9)

MAX1242/MAX1243

+2.7V to +5.25V, Low-Power, 10-Bit

Serial ADCs in SO-8

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EOC

INTERFACE IDLE

CONVERSION

IN PROGRESS

EOC

0µs

TRAILING

ZEROS

SUB

BITS

IDLE

CLOCK OUT SERIAL DATA

TRACK/HOLD

STATE

TRACK

HOLD

TRACK

DOUT B9 B8 B7 B6 B5 B4 B3 B2 B1 B0 S1 S0

SCLK

1 4 8 12 16

7.5µs (t

CONV

)

HOLD

0µs

)

TOTAL = 13.7µs

12.5 × 0.476µs = 5.95µs

CYCLE TIME

0.24µs

Figure 8a. Interface Timing Sequence

EOC

INTERFACE IDLE

CONVERSION

IN PROGRESS

EOC

0µs

IDLE

CLOCK OUT SERIAL DATA

TRACK/HOLD

STATE

TRACK

HOLD

TRACK

DOUT B9 B8 B7 B6 B5 B4 B3 B2 B1 B0

SCLK

1 4 8

7.5µs (t

CONV

)

HOLD

)

TOTAL = 12.74µs

10.5 × 0.476µs = 5µs

CYCLE TIME

0.24µs

Figure 8b. Interface Timing Sequence—Minimum Cycle Time

…

SCLK

DOUT

INTERNAL

T/H

(TRACK/ACQUIRE)

CS0

CONV

STR

(HOLD) (TRACK/ACQUIRE)

B0 S1 S0

Figure 9. Detailed Serial-Interface Timing

1 2 3 4 5 6 7 8 9 10 11 12

MAX1242/MAX1243 1
Serial ADCs in SO-8 1

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Rainbow-electronics MAX1243 Manual de usuario Pagina 9

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