M52721 Mitsubishi, M52721 Datasheet - Page 3

• Manufacturer Part Number: M52721
• Description: WIDEBAND VIDEO PREAMPLIFIER WITH OSD MIX
• Manufacturer: Mitsubishi

ELECTRICAL CHARACTERISTICS TEST METHOD
I
When there is no signal, fix SWA on side “a”, and measure I
using ampere meter A.
V
Input SG8 to pin 5, and set V11 at 0.5V
Gradually increase the amplitude of SG8 from 700mV, and
measure the amplitude of the TP16 output waveform when the
upper side of the waveform becomes distorted.
V
From the condition in Vomax above, change V7 to 2.5V, gradually
increase the amplitude of SG8 from 700mV
signal amplitude when the output signal starts to be distorted.
Gv Maximum gain
Read the amplitude of TP16 output: it should be taken as V
The maximum gain G
V
Set V7 at 2.5V, and read the amplitude of TP16 output: it should be
taken as V
V
Set V7 at 1.0V, and read the amplitude of TP16 output: it should be
taken as V
V
Set brightness (V11) at 1.0V, and measure the output of TP16 with
a voltmeter. This value is V
3
CC
omax
imax
CR1
CR2
B1
(V)
9.0
0.0
Circuit current
Brightness control characteristics 1
Contrast control characteristics 1
Contrast control characteristics 2
Maximum allowable input
Output dynamic range
01
02
.
.
G
V
V
CR1
CR2
V
=20LOG
=20LOG
=20LOG
V
TP16 OUTPUT WAVEFORM
is determined by:
B1
0.7 [V
V
.
V
0.7 [V
V
0.7 [V
0
[V
01
02
P-P
P-P
[V
[V
P-P
P-P
P-P
P-P
]
]
]
]
]
]
[dB]
[dB]
[dB]
P-P
, and read the input
0
.
CC
,
WIDEBAND VIDEO PREAMPLIFIER WITH OSD MIX
V
Set brightness (V11) at 2.0V, and measure the output of TP16 with
a voltmeter. This value is V
V
Set brightness (V11) at 3.0V, and measure the output of TP16 with
a voltmeter. This value is V
F
F
With zero resistance between pins 13 and 16, apply a DC voltage to
pin 5 so that the bottom of the input waveform reaches 2.6V. Next,
apply a DC voltage to pin 8 so that the bottom of the output
waveform reaches 2.4V.
Input SG1 and measure the amplitude of TP16 output (V
Input SG2 and measure the amplitude of TP16 output (V
Input SG3 and measure the amplitude of TP16 output (V
F
T
T
1. Measure the rise time T
2. Next, measure the rise time T
V
While monitoring the output (approx. 2.4V
pulse width gradually and measure the SG6 amplitude when the
output reaches 2.4V or more.
W
While monitoring the output (approx. 2.4V
amplitude gradually and measure the SG6 pulse width when the
output becomes 2.4V or more.
OT
OT
Measure the OSD rise time T
90% of the output pulse with an active probe.
V
While monitoring the output, decrease the SG7 amplitude gradually
and measure the SG7 amplitude when the output reaches 0V.
r
B2
B3
1-a
2-a
1-a
f
10th
19th
10
Pulse characteristics (rise time)
Pulse characteristics (fall time)
of the input pulse with an active probe.
90% of the output pulse with an active probe.
r
f
OSD pulse characteristics (rise time)
OSD pulse characteristics (fall time)
Brightness control characteristics 2
Brightness control characteristics 3
Frequency characteristics 1-a f=100MHz
Frequency characteristics 2-a f=200MHz
and F
Clamp pulse minimum width
Clamp pulse threshold voltage
OSD input threshold voltage
2-a
are determined by:
F
F
T
T
r
1-a
2-a
f
(nsec)= (T
(nsec)= (T
=20LOG
=20LOG
r1
B2
B3
r2
f2
MITSUBISHI ICs (Monitor)
V
V
V
V
and fall time T
.
.
)
)
r
02
01
03
01
2
2
and OSD fall time T
-(T
-(T
[V
[V
[V
[V
r2
r1
f1
P-P
P-P
and fall time T
P-P
P-P
)
)
2
2
]
]
]
]
[dB]
[dB]
M52721SP
f1
DC
DC
between 10 and 90%
), decrease the SG6
), decrease the SG6
f2
f
between 10 and
between 10 and
01
02
03
).
).
).