6

Freescale Semiconductor

MC44C404

Figure 3. MC44C404 Typical Application Circuit for B, G and H Systems

VINA

VINB

VAGO

VAGO

SYS_I

VREFP

VREFM

VAGO

QPSK

CLK4MHZ

9

3

4

5

2

10

22

15

24 MHz

1 µF

0.1 µF

0.1 µF

1 µF

2 MΩ

18 pF

18 pF

1

1 µF

0.1

0.1

0.1

1 µF

6

3.3 V REG

A Input

B Input

CVBS

Analog Ground

Digital Ground

3.3 V

47 Ω

22 µH

MC44C404

1 µF

.1 µF

75 Ω

2.2 µF

RFOUT

PLLFLT

SPFLT

VIDEO

AUXIN

XTAL

+5 V

MC44BS373CAFC

TVOUT

14

7

4

9

12

8

1000 pF

.01 µF

.022 µF

.047 µF

2.2 KΩ

75 Ω

IN

2.2 KΩ

Modulator

C1

32

C2

28

C3

31

C4

29

20

1

1500 pF

750 Ω

1.5 KΩ

BPF1 - PAL

680 pF

680 pF

75 pF

LPF1

33 pF

2.0 KΩ

BPF1 - SYS_I

560 pF

1

560 pF

1

.1 µF

LPF1

BPF1

Video Notch

2.0 KΩ

1.5 KΩ

1.0 KΩ

1.2 KΩ

1

SYS_I

SIGNAL

STANDARD

SYS_I = 1

SYSTEM I

SYS_I = 0 SYSTEMS B, G, H, L