AD9239 datasheet(32/40 Pages) AD

Nome de Peças	AD9239

Descrição Electrónicos	Quad, 12-Bit, 170 MSPS/210 MSPS/250 MSPS Serial Output 1.8 V ADC

PDF	40 Pages

Scroll/Zoom	100%

Fabricante Electrônico	AD [Analog Devices]

Página de início	http://www.analog.com

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32 / 40 page

AD9239

Rev. 0 | Page 32 of

NUMBER OF SDI/SDIO PINS CONNECTED TOGETHER

1.715

1.720

1.725

1.730

1.735

1.740

1.745

1.750

1.755

1.760

1.765

1.770

1.775

1.780

1.785

1.790

1.795

1.800

030

100

Figure 77. SDI/SDIO Pin Loading

DON’T CARE

SDIO

SCLK

tDH

tHI

tCLK

tLO

tDS

R/W

A12

A11

A10

A9A8

D5D4D3D2D1D0

CSB

Figure 78. Serial Timing Details

Table 13. Serial Timing Definitions

Parameter

Timing (Minimum, ns)

Description

tDS

Setup time between the data and the rising edge of SCLK

tDH

Hold time between the data and the rising edge of SCLK

tCLK

Period of the clock

Setup time between CSB and SCLK

Hold time between CSB and SCLK

tHI

Minimum period that SCLK should be in a logic high state

tLO

Minimum period that SCLK should be in a logic low state

tEN_SDI/SDIO

Minimum time for the SDI/SDIO pin to switch from an input to an output relative to the

SCLK falling edge (not shown in Figure 78)

tDIS_SDI/SDIO

Minimum time for the SDI/SDIO pin to switch from an output to an input relative to the

SCLK rising edge (not shown in Figure 78)

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