ADA4424-6

Rev. C | Page 7 of 16

PIN CONFIGURATION AND FUNCTION DESCRIPTIONS

D1

D2

D3

VDD3_SD

Y_IN

S

GND5

SD_ENABLE

C_IN

GND3

HPr_IN

FC_SEL

HY_IN

HPb_IN

HD_ENABLE

C1a

OFFSET_ENB

MODE0

VDD3_CP

L1_OUT

L2_OUT

L3_OUT

VSS_SD

Y_OUT

S1/S2_OUT

CVBS_OUT

C_OUT

GND3

HPr_OUT

HPb_OUT

VSS_HD

HY_OUT

VDD3_HD

GND_CP

C1b

C2/CP_OUT

MODE1

VDD5

ADA4424-6

TOP VIEW

(Not to Scale)

1

2

3

4

5

6

7

8

9

10

11

12

13

14

15

16

17

18

19

20

21

22

23

24

25

26

27

28

29

30

31

32

33

34

35

36

37

38

Figure 3. Pin Configuration, Top View

Table 4. Pin Function Descriptions

Pin No.

Mnemonic

Description

1

GND5

Ground Pin for 5 V Supply.

2

D1

D-Terminal Vertical Resolution Selection Input.

3

D2

D-Terminal Scan Selection Input.

4

D3

D-Terminal Aspect Ratio Selection Input.

5

S

S-Terminal Aspect Ratio Selection Input.

6

Y_IN

SD Luma (Y) Input.

7

VDD3_SD

3.3 V Supply Pin for SD Filter Section.

8

SD_ENABLE

Output Enable Pin for SD (Y, C, CVBS).

9

C_IN

SD Chroma (C) Input.

10, 29

GND3

Ground Pins for 3.3 V Supply.

11

HY_IN

ED/HD Y Component Input.

12

FC_SEL

Filter Corner Frequency Selection Pin for HY, HPb, HPr Channels.

13

HPb_IN

ED/HD Pb Component Input.

14

HPr_IN

ED/HD Pr Component Input.

15

HD_ENABLE

Output Enable Pin for ED/HD (HY, HPb, HPr).

16

MODE0

This pin selects sync tip or back porch sampling when MODE1 = 0 and selects high or low fixed offset

subtraction when MODE1 = 1.

17

OFFSET_ENB

Offset Cancellation Enable Pin.

18

VDD3_CP

3.3 V Supply Pins for Charge Pump Section.

19, 21

C1a, C1b

Charge Pump Capacitor C1 Connection Pin.

20

GND_CP

Ground Pin for 3.3 V Charge Pump Supply.

22

C2/CP_OUT

Charge Pump Output Pin. Connect Capacitor C2 from this pin to ground.

23

MODE1

Selects Automatic or Fixed Offset Subtraction Mode.

24

VDD3_HD

3.3 V Supply Pin for ED/HD Filter Section.

25

HPr_OUT

ED/HD Pr Component Output.

26

HPb_OUT

ED/HD Pb Component Output.

27

VSS_HD

Negative Supply Pin for ED/HD Filter Section. This pin should be connected to the charge pump output

(Pin 22), as shown in Figure 18.

28

HY_OUT

ED/HD Y Component Output.

30

C_OUT

SD Chroma (C) Output.

31

CVBS_OUT

SD Composite Video (CVBS) Output.