AD9268BCPZ-801 datasheet(10/44 Pages) AD

10 / 44 page

AD9268

Rev. A | Page 10 of 44

TIMING SPECIFICATIONS

Table 5.

Parameter

Conditions

Limit

SYNC TIMING REQUIREMENTS

tSSYNC

SYNC to rising edge of CLK+ setup time

0.3 ns typ

tHSYNC

SYNC to rising edge of CLK+ hold time

0.40 ns typ

SPI TIMING REQUIREMENTS

tDS

Setup time between the data and the rising edge of SCLK

2 ns min

tDH

Hold time between the data and the rising edge of SCLK

2 ns min

tCLK

Period of the SCLK

40 ns min

Setup time between CSB and SCLK

2 ns min

Hold time between CSB and SCLK

2 ns min

tHIGH

SCLK pulse width high

10 ns min

tLOW

SCLK pulse width low

10 ns min

tEN_SDIO

Time required for the SDIO pin to switch from an input to an output relative to the SCLK

falling edge

10 ns min

tDIS_SDIO

Time required for the SDIO pin to switch from an output to an input relative to the SCLK

rising edge

10 ns min

Timing Diagrams

tPD

tSKEW

tCH

tDCO

tCLK

N – 12

N – 13

N – 1

N + 1

N + 2

N + 3

N + 5

N + 4

N – 11

N – 10

N – 9

N – 8

VIN

CLK+

CLK–

CH A/CH B DATA

DCOA/DCOB

Figure 2. CMOS Default Output Mode Data Output Timing

tPD

tSKEW

tCH

tDCO

tCLK

CH A

N – 12

CH B

N – 12

CH A

N – 11

CH B

N – 11

CH A

N – 10

CH B

N – 10

CH A

N – 9

CH B

N – 9

CH A

N – 8

N – 1

N + 1

N + 2

N + 3

N + 5

N + 4

VIN

CLK+

CLK–

CH A/CH B DATA

DCOA/DCOB

Figure 3. CMOS Interleaved Output Mode Data Output Timing

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