AN5195K-C
ICs for TV
■ Terminal Equivalent Circuits (continued)
Pin No.
Equivalent circuit
Description
DC (V)
5 V
(VCC3
3 kΩ
57
Vertical sync. signal clamp pin:
• Peak clamp pin in order to separate
vertical sync. signal
AC
)
4.3 V
f = fV
50 kΩ
16 kΩ
To
ver.
count
down
• Integrating amount of vertical sync.
signal itself is determined by time
constant of inside but triggering tim-
ing is determined by selecting R1
and C1 of external time constant.
• Uses with R1 > 200 kΩ
4 kΩ
270 Ω
57
R2
220 Ω
200 Ω
C1
R1
330 kΩ
0.33 µF
•
R2 is for emitter current limiting resistor
58
59
Vertical pulse output pin:
AC
5 V
(VCC3
)
• Negative polarity, pulse width 10 H
Pulse
50 kΩ
58
4.3 V
0 V
43 kΩ
9 V
(VCC1
50 µA 12 kΩ
SECAM interface pin:
AC+DC
AC
)
fC
56.2 kΩ
12 kΩ
• Inpu/output pin for interface with
SECAM IC
250 mV[p-p]
or
• SECAM mode is made by taking the
curr. of 100 µA or more from pin 59.
• At SECAM
13.7 kΩ
61.5 kΩ
59
0 mV[p-p]
DC
50 k
Ω
To
SECAM IC
DC4.4 V+AC250 mV[p-p]
• At non-SECAM
4.4 V
200 µA
100 µA
SECAM
or
SECAM
detecter
DC1.1 V+AC250 mV[p-p]: 4.43 MHz
or 0 mV[p-p]: 3.58 MHz
1.1 V
SECAM
60
61
Pin 60: −(B−Y) output pin:
AC
5 V
(VCC3
)
100 µA
100 µA
100 µA
Pin 61: −(R−Y) output pin:
• At SECAM, output circuit is off
and comes to high impedance.
• Output to 1HDL
−(B−Y)
−(B−Y)
60
61
−(R−Y)
−(R−Y)
To 1HDL
SECAM
0 V
1.5 kΩ
2.5 kΩ
1.5 kΩ
DC level
SECAM
approx. 2.1 V
62
Sandcastle pulse output pin:
• Sandcastle pulse is outputted to
1HDL and SECAM IC.
AC
Pulse
5 V
(VCC3
)
37 kΩ
15 kΩ
4.7 V
2.4 V
VBLK
42 kΩ
62
63 kΩ
44 kΩ
BGP
HBLK
24
PANASONIC [ PANASONIC ]
