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6, 31 GND (B)
11, 26 GND (G) GND -
16, 21 GND (R)
VCC
11k
Main Å"Use at maximum 5V for
2.5V
17 2.5
41k
contrast stable operation.
GND
17
VCC
41k
Å"Input pulses of minimum
2.5V.
2.5V
minimum
18 CP IN -
18
0.5V
maximum
2.2V
Å"Input at low impedance.
GND
VCC
20.3k
B-ch
19 Brightness -
G-ch
19
GND
VCC
Å"Input pulses of minimum
45k
B-ch 2.5V.
G-ch 2.5 to 5V
BLK IN
20 -
20
(for retrace)
0.5V
maximum
Å"Connected to GND if not
2.1V
used.
GND
0.25mA
14
MITSUBISHI ICs (Monitor)
M52737SP
3-CHANNEL VIDEO PREAMPLIFIER WITH OSD MIXING, RETRACE BLANKING
DESCRIPTION OF PIN (cont.)
Pin No. Name DC voltage (V ) Peripheral circuit of pins Description of function
22, 27, 32 NC
VCC
1k
23 Hold (R)
Å"A capacity is needed on
28 Hold (G) Variable
the GND side.
33 Hold (B)
0.2mA
GND
Å"Used to supply power to
24 VCC2 (R) output emitter follower
Pin 24
29 VCC2 (G) Apply 12 Pin 29 only.
Pin 34
34 VCC2 (B) Å"Apply equivalent voltage
to 3 channels.
Å"A resistor is needed on
the GND side.
25 OUTPUT (R)
Set discretionally to
30 OUTPUT (G) Variable
maximum 15mA,
35 OUTPUT (B)
50
Pin 25
depending on the
Pin 30
required driving capacity.
Pin 35
VCC
65k 50k 65k
1k Å"Pulled up directly to VCC
36 OSD adjust at open 5.5V
or open if not used.
10P
55k 55k
GND
15
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