mc44c402 Freescale Semiconductor, Inc, mc44c402 Datasheet - Page 7

• Manufacturer Part Number: mc44c402
• Description: Mts Stereo Encoder
• Manufacturer: Freescale Semiconductor, Inc

Freescale Semiconductor
MODULATOR INTERFACE
1.
V
CVBS
The 4 MHz clock drive to the MC44BS373 must be
filtered and the level set correctly. This can be achieved
simply by using a 1 µH inductor and 1500 pF and series
750 ohm resistor and 100 pF blocking cap, as shown in
Figure 7
RIGHT
in
IN
LEFT
IN
IN
75
3.3 V REG
note 2.
1
1
470p
1K
µ
µ
1
µ
220
0.1
0.1
µ
µ
Video Notch
0.1
1
µ
8.2µ
µ
10
9
2
3
6
1
4
5
1M
VREFM
VINLP
VINRP
VAGO
VAGO
VAGO
VREFP
CVBS
47Ω
75Ω
3.3V
Figure 7. MC44C402 Typical Application Circuit
TPSRA4M50B00-B0
Murata
MC44C402
1
µ
22
µ
1
µ
0.1
µ
18p
0.1
µ
VID_PRES
CLK4MHZ
0.1
2.2K
24MHz
µ
PILOT
2M
2.
3.
CA
0.1
The MC44BS373 SPLL filter must be changed to a
single 2.2 µF capacitor to ground. Please see
note 3. (note some caps exhibit microphonic problems
in this application.
Input impedance of the MC44BS373 is around
70 Kohms and to preserve the low frequency
performance the coupling caps should be greater than
0.1 µF
15
22
23
17
18p
µ
500
750
Note 2
1000p
1
µ
Note 1
2200p
560
µ
1500p
.01
2.2K
10
µ
.1
µ
µ
7
4
9
XTAL
VIDEO
AUDIO
MC44BS373CA
Modulator
+5V
V V
I
Analog Ground
2
Digital Ground
PLLFLT
TVOUT
C
SPFLT
.022
µ
12
8
14
1000p
MC44C402
.047
Note 3
Figure 7
2.2K
RFOUT
2.2
µ
µ
7