MITSUMI
85MHz RGB Video Amplifier/130MHz RGB Video Amplifier MM1207, 1205
85MHz RGB Video Amplifier/130MHz RGB Video Amplifier
Monolithic IC MM1207, 1205
Outline
MM1207XD and MM1205XD are wideband RGB video amplifiers with DC control, developed for use in
monitors. The main differences between MM1207XD and MM1205XD are video amp bandwidth and output
rise time, and output fall time. Other characteristics are the same.
Features
1. Built-in wideband video amp
85MHz
@ -3dB (4V
P-P
output)
2. Matched (0.1dB or 1.2%) contrast adjustment attentuators built-in
3. Built-in cutoff and luminance adjustment single end input comparators with external gate control
4. Gain of each video amp controlled independently
5. Built-in high input impedance DC contrast control, 0~4V (> 40dB range)
6. Built-in high input impedance DC drive control, 0~4V (3dB range)
7. 7V
P-P
output swing (band slightly attenuated)
8. Output blanking function
9. Output can drive almost all hybrid or discrete CRT drivers directly
Package
DIP-28B (MM1207XD, MM1205XD)
Applications
1. High resolution RGB CRT monitors
2. AGC amps for video
3. Gain and DC offset control
4. Interface amps for LCD or CCD systems
MM1207 is described here as the representative model.
MM1207 is a wideband video amps system developed for use in high resolution RGB monitors. In addition to
three matched video amps, it has a gate controlled differential input black level comparator for luminance
adjustment, three matched DC control attenuators for contrast adjustment, and three gain trimming CD
control subcontrast attentuators for white balance. All DC control input is high impedance, and the operating
range is set for easy interface with serial bus control systems, at 0~4V. Also, MM1207's built-in blanking
circuit clamps video output to between GND~0.1V during blanking, enabling blanking on the CRT cathode.
Model
MM1207
MM1205
Video amp band
85MHz
130MHz
Output rise time
4.3nS
2.6nS
Output fall time
4.3nS
3.6nS
MITSUMI
85MHz RGB Video Amplifier/130MHz RGB Video Amplifier MM1207, 1205
Block Diagram
MITSUMI
85MHz RGB Video Amplifier/130MHz RGB Video Amplifier MM1207, 1205
Pin Description
Pin no.
Pin name
Internal equivalent circuit diagram Pin no.
Pin name
Internal equivalent circuit diagram
1, 2
CONTRAST CAP
3, 11
VCC1
22, 25
4
R VIDEO IN
6
G VIDEO IN
9
B VIDEO IN
5
R CLAMP CAP
8
G CLAMP CAP
10
B CLAMP CAP
7, 21
GND
24
12
CONTRAST
13
BLANK
------------------------------------------------------
GATE
------------------------------------------------
14
CLAMP
-------------------------------------------------------------
GATE
----------------------------------------------------
15
B DRIVE ADJ
18
G DRIVE ADJ
28
R DRIVE ADJ
16
B CUT-OFF ADJ
19
G CUT-OFF ADJ
27
R CUT-OFF ADJ
17
R VIDEO OUT
20
G VIDEO OUT
26
B VIDEO OUT
23
V
CC
2
MITSUMI
85MHz RGB Video Amplifier/130MHz RGB Video Amplifier MM1207, 1205
Absolute Maximum Ratings
(Ta=25C)
Recommended Operating Conditions
(Ta=25C)
DC Electrical Characteristics
(Ta=25C, V
CC
=12V, V12=4V, V14=0V, V
C-O
=1V, V
DRV
=4V, S1~3=OFF, S4~6=1)
Item
Symbol
Ratings
Units
Storage temperature
T
STG
-65~+150
C
Operating temperature
T
OPR
-20~+80
C
Power supply voltage
V
CC
13.5
V
Pin input voltage
V
IN
GND <
= V
IN
<
= V
CC
V
Video output current
I
O
28
mA
Allowable loss
Pd
2.5
W
Electrostatic breakdown 1
2
kV
Electrostatic breakdown 2
1
kV
Pin temperature
265
C
Item
Symbol
Min. Typ. Max. Units
Operating voltage
V
CC
10.8
12.0
13.2
V
Item
Symbol
Measurement conditions
Min. Typ. Max. Units
Consumption current
I
CC
1
V
CC
1+V
CC
2, R
L
=
90
105
mA
Video amp input voltage
V
B
2.8
V
Video input resistance
R
B
20
20
k
Clamp gate input voltage L
V
CGL
0.8
1.2
V
Clamp gate input voltage H
V
CGH
1.6
2.0
V
Clamp gate input current L
I
CGL
V14=0V
-0.5
-5.0
uA
Clamp gate input current H
I
CGH
V14=12V
0.005
1.0
uA
Clamping capacitor charge current
I
CL+
500
750
uA
Clamping capacitor discharge current
I
CL-
-500 -750
uA
Clamping capacitor bias discharge current
I
CLB
S5=2
500
nA
Blanking gate input voltage L
V
BGL
S4=2
0.8
1.2
V
Blanking gate input voltage H
V
BGH
S4=2
1.6
2.0
V
Blanking gate input current L
I
BGL
V13=0V, S4=2
-5.0
-1.0
uA
Blanking gate input current H
I
BGH
V13=12V, S4=2
0.01
1.0
uA
Video output voltage L
V
OL
V
C-O
=0V
0.15
0.5
V
Video output voltage H
V
OH
V
C-O
=9V
7.0
7.5
V
Video black level output voltage
V
O
V
C-O
=1V
0.9
V
Video black level output voltage
V
O
V
C-O
=1V
100
mV
Video output blanking voltage
V
OBL
V13=0V
35
70
mV
Contrast control input current
I12
V12=0~4V
-250
uA
Drive control input current
I
DRV
V
DRV
=0~4V
-250
uA
Cutoff control input current
I
C-O
V
C-O
=0~4V
-500
uA
MITSUMI
85MHz RGB Video Amplifier/130MHz RGB Video Amplifier MM1207, 1205
AC Electrical Characteristics
(Ta=25C, V
CC
=12V, S1~3=ON, S4, 5=1, S6=2)
Item
Symbol
Measurement conditions
Min. Typ. Max. Units
Video amp gain
A
V
max.
V
IN
=635mV
P-P
5.4
7.0
V/V
V12=4V, V
DRV
=4V
14.6
16.9
dB
Gain attenuation 1
A
V
1
V
IN
=635mV
P-P
, V12=2V
-6
dB
Gain attenuation 2
A
V
2
V
IN
=635mV
P-P
, V12=0.5V
-38
dB
Drive control range
A
VDR
V
DRV
=0~4V, V12=4V
6
dB
Gain matching
A
VMAT
V
DRV
=V12=4V
0.3
dB
Gain change between amps
A
VM
1
V12=4~2V
0.1
dB
Gain attenuation matching
THD
V
OUT
=1V
P-P
1
%
Video amp frequency bandwidth
f
BW
V
OUT
=4V
P-P
, V
DRV
=V12=4V
85
MHz
Output rise time
tr
V
OUT
=4V
P-P
4.3
nS
Output fall time
tf
V
OUT
=4V
P-P
4.3
nS
Crosstalk 1
V
SEP
1
V12=4V
-70
dB
Crosstalk 2
V
SEP
2
V12=4V
-50
dB
Blanking output fall time
t
rBLK
V
OUT
=1V
P-P
, S4=2
7
nS
Blanking output fall time
t
fBLK
V
OUT
=1V
P-P
, S4=2
7
nS
Back-porch clamping pulse width
t
PW
nS
Measuring Circuit
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