MAX1242(1998) 查看數據表（PDF） - Maxim Integrated

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MAX1242
(Rev.:1998)

+2.7V to +5.25V, Low-Power, 10-Bit Serial ADCs in SO-8

Maxim Integrated 

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

Serial ADCs in SO-8

CS

SCLK

DOUT

INTERFACE IDLE

TRACK/HOLD

STATE TRACK

CYCLE TIME

CONVERSION

IN PROGRESS

HOLD

7.5µs (tCONV)

1

4

8

12

16

EOC

EOC

0µs

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

CLOCK OUT SERIAL DATA

SUB

BITS

TRACK

12.5 × 0.476µs = 5.95µs

TOTAL = 13.7µs

TRAILING

ZEROS

0µs

IDLE

0.24µs

(tCS)

HOLD

Figure 8a. Interface Timing Sequence

CS

SCLK

DOUT

INTERFACE IDLE

TRACK/HOLD

STATE TRACK

CYCLE TIME

CONVERSION

IN PROGRESS

HOLD

7.5µs (tCONV)

1

4

8

EOC

EOC

0µs

B9 B8 B7 B6 B5 B4 B3 B2 B1 B0

CLOCK OUT SERIAL DATA

TRACK

10.5 × 0.476µs = 5µs

TOTAL = 12.74µs

IDLE

0.24µs

(tCS)

Figure 8b. Interface Timing Sequence—Minimum Cycle Time

HOLD

CS

tCS0

SCLK

tDV

DOUT

tAP

INTERNAL

T/H

(TRACK/ACQUIRE)

tCONV

(HOLD)

…

…

tDO

…

tSTR

…

tCH

tCL

B0

S1

S0

(TRACK/ACQUIRE)

tCS

tTR

Figure 9. Detailed Serial-Interface Timing

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