ADV7321 datasheet(64/88 Pages) AD

64 / 88 page

ADV7320/ADV7321

Rev. 0 | Page 64 of 88

For optimum performance, the analog outputs should each be

source- and load-terminated, as shown in Figure 91. The

termination resistors should be as close as possible to the

ADV7320/ADV7321 to minimize reflections.

For optimum performance, it is recommended that all

decoupling and external components relating to the

ADV7320/ADV7321 are located on the same side of the PCB

and as close as possible to the ADV7320/ADV7321. Any

unused inputs should be tied to ground.

Ω

VDD_IO

Ω

VDD_IO

COMP1, 2

VAA

VDD VDD_IO

ADV7320/

ADV7321

I2C

CLKIN_B

CLKIN_A

EXT_LF

UNUSED

INPUTS

SHOULD BE

GROUNDED

C0–C9

S0–S9

Y0–Y9

VAA

4.7

µF

4.7k

Ω

820pF

3.9nF

VAA

GND_ IO

AGND

DGND

11, 57

I2C BUS

10nF

0.1

µF

10nF

0.1

µF

10, 56

VDD_IO

VDD

10nF

µF

VAA

0.1

µF

POWER SUPPLY DECOUPLING

FOR EACH POWER SUPPLY GROUP

VAA

0.1

µF

DAC D 39

DAC E 38

DAC F 37

DAC A 44

DAC B 43

DAC C 42

VREF 46

1.1k

Ω

VAA

RECOMMENDED EXTERNAL

AD1580 FOR OPTIMUM

PERFORMANCE

Ω

VDD_IO

SCLK 22

100

Ω

680

Ω

SDA 21

ALSB 20

RSET1

RSET2

100

Ω

3040

Ω

SELECTION HERE

DETERMINES

DEVICE ADDRESS

3040

Ω

VDD_IO

S_HSYNC

S_VSYNC

S_BLANK

P_HSYNC

P_VSYNC

P_BLANK

RESET

100nF

ALL COMPONENTS IN DASHED BOXES MUST BE LOCATED ON THE SAME SIDE

OF THE PCB AS THE ADV7320/21 AND AS CLOSE AS POSSIBLE TO THE ADV7320/21.

300

Ω

300

Ω

300

Ω

300

Ω

300

Ω

300

Ω

Figure 91. ADV7320/ADV7321 Circuit Layout

ADV7321 Datasheet(PDF) 64 Page - Analog Devices

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