AD7380 datasheet(6/31 Pages) AD

6 / 31 page

AD7381-4

Data Sheet

Rev. 0 | Page 6 of 31

Timing Diagrams

SCLK

TRISTATE

SDOA

TRISTATE

SDOB

SDI

tCYC

tCSH

tQUIET

tSCLK

tSCLKED

tSCLKH

tSCLKL

tSCLKCS

tSDOT

tSDOS

tSDOH

tSDIH

tSDIS

tSDOEN

DB 15

DB 14

DB 13

DB 12

DB 11

DB 10

DB 9

DB 8

DB 7

DB 6

DB 5

DB 4

DB 3

DB 2

DB 1

DB 0

DB15

DB14

DB13

DB12

DB11

DB10

DB9

DB8

DB 7

DB 6

DB 5

DB 4

DB 3

DB 2

DB 1

DB 0

DB 15

DB 14

DB 13

DB 12

DB 11

DB 10

DB 9

DB 8

DB 7

DB 6

DB 5

DB 4

DB 3

DB 2

DB 1

DB 0

Figure 2. Serial Interface Timing Diagram

CONVERSION

ACQUIRE

tCONVERT

tACQUIRE

Figure 3. Internal Conversion Acquire Timing

tPOWERUP

TIME TO ACCURATE CONVERSION

VCC

Figure 4. Power-Up Time to Conversion

VCC

SDI

REGWRITE

REG

WRITE

Figure 5. Power-Up Time to Register Read Write Access

SHUTDOWN

NORMAL

SDI

STARTUP

SHUTDOWN MODE

NORMAL MODE

ACCURATE CONVERSION

Figure 6. Shutdown Mode to Normal Mode Timing

CONVERSION

ACQUIRE

CONVERSION

ACQUIRE

CONVERSION

ACQUIRE

INTERNAL

CONVERT2

CONVERSION

CONVERT3

CONVERT4

CONVERTx

CONVERT0

Figure 7. Conversion Timing During OS Normal Mode

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