AD9684 datasheet(23/65 Pages) AD

23 / 65 page

AD9684

Data Sheet

Rev. 0 | Page 22 of 64

EQUIVALENT CIRCUITS

AIN

CONTROL

(SPI)

10pF

VIN+x

VIN–x

AVDD3

VCM

BUFFER

400Ω

AVDD3

1.5pF

3pF

1.5pF

3pF

Figure 29. Analog Inputs

CLK+

CLK–

AVDD1

25Ω

AVDD1

25Ω

20kΩ

VCM = 0.85V

Figure 30. Clock Inputs

SYNC+

AVDD1

1kΩ

SYNC–

AVDD1

1kΩ

20kΩ

LEVEL

TRANSLATOR VCM = 0.85V

Figure 31. SYNC± Inputs

DRVDD

DRGND

DRVDD

DRGND

OUTPUT

DRIVER

SWING CONTROL

(SPI)

DATA+

DATA–

Dx±

Figure 32. LVDS Digital Outputs, STATUS±, DCO±

30kΩ

SPIVDD

ESD

PROTECTED

ESD

PROTECTED

1kΩ

SPIVDD

SCLK

Figure 33. SCLK Inputs

30kΩ

ESD

PROTECTED

ESD

PROTECTED

1kΩ

SPIVDD

CSB

Figure 34. CSB Input

30kΩ

ESD

PROTECTED

ESD

PROTECTED

1kΩ

SPIVDD

SDI

SDIO

SDO

Figure 35. SDIO

ESD

PROTECTED

ESD

PROTECTED

SPIVDD

FD_A/FD_B

FD_x PIN CONTROL (SPI)

TEMPERATURE DIODE

(FD_A ONLY)

Figure 36. FD_A/FD_B Outputs

AD9684 Datasheet(PDF) 23 Page - Analog Devices

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