Page 1
MITSUBISHI ICs (AV COMMON)
MODRLIMRMODBLIMB90
MMV
1/2
6d
ADD
BPF
Y/C
MIX
LPFRVCA
LPFBVCA
Y
M52390FP
NTSC/PAL ENCODER
DESCRIPTION
The M52390FP is a single-chip semiconductor integrated circuit
which has a function to convert R/G/B signal to NTSC/PAL
composite video signal and the superimpose function.
FEATURES
RGB encode
•LPF for chroma difference signal is built-in. Cutoff frequency
control is possible by connecting a resistor externally.
•Because VCA circuit is built-in, gain control at chroma block is
possible.
•Carrier leak is on a low level because of built-in high-precision
modulation circuit and clamp circuit.
•Burst signal and sync signal are generated within the IC.
Superimpose function
•Ys IN (control input) is used for switching 2 input signals, VIDEO
IN and RGB IN.
•Because high-speed analog switch is built-in, even microscopic
characters can be inserted.
•Built-in an APC circuit to adjust tint of the parent picture (VIDEO
IN) and the RGB encode signal automatically.
Overall functions
•A drive circuit (75Ω) can be configured with one transistor by
outputting the video output signal at 2VP-P.
•This device can be used for both NTSC system and PAL system.
PIN CONFIGURATION (TOP VIEW)
GND
C.Sync IN
HHK
CLAMP R
3fsc TRAP
CLAMP B
VCXO
APC FILTER
VIDEO IN
VIDEO OUT
1
2
3
M52390FP
4
5
6
7
8
9
10
Outline 20P2N-A
(Lead pitch:1.27mm)
LPF fc CONT.
20
COLOR CONT.
19
R IN
18
G IN
17
B IN
16
Y OUT
15
Y IN
14
Vreg
13
Ys IN
12
V
CC
11
APPLICATION
TV, VCR, monitor, and other AV equipments
RECOMMENDED OPERATING CONDITION
Supply voltage range .................................................... 4.7 to 5.3V
Rated supply voltage ................................................................ 5V
BLOCK DIAGRAM
LPF fc CONT.
20 19 18 17 16 15 14 13 12 11
LPF
CONT
R-Y
C.SYNC 1/2fh BFP(CP)
VCA
CONT
R
B
12345678910
GND C.Sync IN
COLOR
CONT.
0.72VP-P
CLAMP R CLAMP G CLAMP B
BFP
CLAMPRBURST
CLAMP
HHK
C.SYNC
B
C.SYNC
ADD R
NTSC : OFF
BURST
ADD B
R IN G IN B IN Y OUT Y IN
1VP-P 0.5VP-P
SYNC
ADD
ADDd
1/2fh at PAL
3fsc TRAP
C.SYNC
BPFd
1/2fh
BFP
CLAMP B
(Y : 6dB)
Y/C
MIXd
IDENT
VCXO
VCXO APC FILTER VIDEO IN
HHK
MATRIX
˚
SIFT
CLAMP R
X
NTSC
PAL
VREG
APC
Vreg
APC SW
BFP
Ys IN VCC=5V
SWV
CONT
SW V
AMP 2
AMP 1
CLAMP V
1VP-P
HPF 2
HPF 1
2VP-P
VIDEO OUT
AMP
B
Page 2
MITSUBISHI ICs (AV COMMON)
ABSOLUTE MAXIMUM RATINGS (Ta=25˚C, unless otherwise noted)
Symbol RatingsParameter
CC
V
Pd
Topr
Tstg
K
Values in parentheses are those measured when the IC is mounted on a standard board.
Supply voltage
Power dissipation
Operating temperature
Storage temperature
Thermal derating (Ta≥25˚C)
7
620
(900)
-20 to 75
-40 to 125
6.2
(9.0)
ELECTRICAL CHARACTERISTICS (Ta=25˚C, Vcc=5V, Sa2=sync input, unless otherwise noted)
Test
RGB IN Y OUT
Y IN VIDEO OUT
RGB IN TRAP
Symbol Parameter
No.
Current dissipation 1
Current dissipation 2
Matrix ratio R
Matrix ratio G
Matrix ratio B
Y level at RGB 100%
R IN - Y OUT frequency characteristics
G IN - Y OUT frequency characteristics
B IN - Y OUT frequency characteristics
Sync level 1
Sync level 2
Y IN - VIDEO OUT Gain
Y IN - VIDEO OUT frequency
characteristics
Delay (R-Y)
Delay (B-Y)
Gain (R-Y) VCA:Hi
10
11
12
13
14
15
16
ICC1
1
ICC2
2
ER
3
EG
4
EB
5
EY
6
FR
7
FG
8
FB
9
VS1
VS2
GY
FY
DL(R-Y)
DL(B-Y)
GH(R-Y)
Test conditions
NTSC MODE
12
5V
PAL MODE (SW13 : ON)
12
5V
SG18 : 1VP-P
SG17 : 1V
P-P
SG16 : 1VP-P
SG16, SG17, SG18 : 0.71VP-P
SG18 : 500kHz/5MHz, 0.5VP-P CW
SW16, 17, 18 : ON
2
0V (SG2 : OFF)
SG17 : 500kHz/5MHz, 0.5VP-P CW
SW16, 17, 18 : ON
2
0V (SG2 : OFF)
SG16 : 500kHz/5MHz, 0.5VP-P CW
SW16, 17, 18 : ON
2
0V (SG2 : OFF)
NTSC MODE
PAL MODE (SW13 : ON)
SG14 : 500kHz, 0.5VP-P CW
12
5V
SG14 : 5MHz, 0.5VP-P CW
12
5V
SG18 : 1VP-P
15 12 7
5V, 5V, 0V
SG16 : 1VP-P
15 12 7
5V, 0V, 0V
SG18 : 500kHz, 0.5VP-P CW
SW4, 6, 16, 17, 18 : ON
15 12 7 19
5V, 5V, 0V, 5V/2.5V
0V (SG2 : OFF)
2
Unit
V
mW
˚C
˚C
mW/˚C
Test
point
11
11
15
15
15
15
15
15
15
15
15
10
10
5
5
5
M52390FP
NTSC/PAL ENCODER
Limits
Min. Typ. Max.
35 50 65 mA
37 52 67 mA
0.27 0.30 0.33 V
0.53 0.59 0.65 VP-P
0.09 0.11 0.13 VP-P
0.63 0.71 0.79 VP-P
-1.5 0 1.5 dB
-1.5 0 1.5 dB
-1.5 0 1.5 dB
257 286 315 mV
270 300 330 mVP-P
10.5 12 13.5 dB
-1.5 0 1.5 dB
210 310 410 ns
210 310 410 ns
1 2 3.5 dB
Unit
P-P
P-P
17
18
GH(B-Y)
GL(R-Y)
Gain (B-Y) VCA:Hi
Gain (R-Y) VCA:Lo
SG16 : 500kHz, 0.5VP-P CW
SW4, 6, 16, 17, 18 : ON
15 12 7 19
5V, 0V, 0V, 5V/2.5V
0V (SG2 : OFF)
2
SG18 : 500kHz, 0.5VP-P CW
SW4, 6, 16, 17, 18 : ON
15 12 7 19
5V, 5V, 0V, 0V/2.5V
0V (SG2 : OFF)
2
5
5
1 2 3.5 dB
-4.5 -3 -2 dB
Page 3
ELECTRICAL CHARACTERISTICS (cont.)
MITSUBISHI ICs (AV COMMON)
M52390FP
NTSC/PAL ENCODER
Test
Symbol Parameter
No.
19
GL(B-Y)
Gain (B-Y)
VCA:Lo
RGB IN VIDEO OUT
20
21
22
23
24
25
26
27
28
29
30
V
B1
VB2
VB3
PPB
VR/B
VG/B
VB/B
VC/B
PR/B
PG/B
PB/B
NTSC burst level
PAL burst level
PAL burst level difference
PAL burst phase difference
R/burst level ratio
G/burst level ratio
B/burst level ratio
Carrier leak in NTSC mode
R/burst phase difference
G/burst phase difference
B/burst phase difference
VIDEO IN VIDEO OUT
31
32
GVIO
FVIO
VIDEO IN VIDEO OUT Gain
VIDEO IN VIDEO OUT frequency
characteristics
SUPER IMPOSE
33
34
PSI
VOS
RGB/VIDEO IN burst phase difference
DC offset
MMV
35
36
37
HHK
BFPP
BFPW
HHK width
BFP point (burst point)
BFP width (burst width)
Test conditions
SG16 : 500kHz, 0.5V
P-P CW
SW4, 6, 16, 17, 18 : ON
5V, 0V, 0V, 0V/2.5V
15 12 7 19
0V (SG2 : OFF)
2
NTSC MODE
12
5V
PAL MODE (SW13 : ON)
12
5V
PAL MODE (SW13 : ON)
12
5V
PAL MODE (SW13 : ON)
12
5V
SG18 : 0.71VP-P
12
5V
SG17 : 0.71VP-P
12
5V
SG16 : 0.71VP-P
12
5V
NTSC MODE
12
5V
SG18 : 0.71VP-P
12
5V
SG17 : 0.71VP-P
5V
12
SG16 : 0.71VP-P
12
5V
SG9 : 500kHz, 0.5VP-P CW
SW9 : ON
0V, 0V (SG2 : OFF)12 2
SG9 : 5MHz, 0.5VP-P CW
SW9 : ON
0V, 0V (SG2 : OFF)12 2
SG9 : 3.58MHz, 286mV
P-P CW
SG12 : 1VP-P
SG9 : burst, 286mVP-P
SG12 : 1VP-P
PAL MODE (SW13 : ON)
5
5V
5V
5
5
5V
Test
point
5
10B
10B
10B
10B
10B
10B
10B
10B
10B
10B
10B
10
10
10B
10
2
15
2
15
15
Limits
Min. Typ. Max.
Unit
-4.5 -3 -2 dB
243 286 329 mVP-P
255 300 345 mVP-P
-30 0 30 mVP-P
82 90 98 deg
2.68 3.15 3.62
2.51 2.95 3.39
1.91 2.25 2.59
- -40 -28 dB
96 104 112 deg
233 241 249 deg
339 347 355 deg
567dB
-1.5 0 1.5 dB
-5 0 5 deg
-20 0 20 mV
40 47 54 µs
4.5 5.6 6.7 µs
2.0 2.5 3.0 µs
Page 4
ELECTRICAL CHARACTERISTICS TEST METHOD
Mode table (common to each test)
Mode Conditions Functions
FREE RUN MODE
PAL MODE
MITSUBISHI ICs (AV COMMON)
M52390FP
NTSC/PAL ENCODER
9
0 ~ 0.3V
13
2 ~ 2.2mA
VCXO FREE RUN
Carrier phase for MOD R is inverted on line
SUPER IMPOSE MODE
TEST MODE MR
TEST MODE MB
TEST MODE DR
TEST MODE DB
TEST MODE P
4.7 ~ 5V
4.7 ~ 5V
4.7 ~ 5V
4.7 ~ 5V
12
1215 7
2 ~ 5V
0 ~ 1V
2 ~ 5V
0 ~ 1V
5
4.7 ~ 5V
Hi : 2 ~ 5V
Lo : 0 ~ 1V
OPEN
OPEN
0 ~ 0.3V
0 ~ 0.3V
10
VIDEO OUT
RGB ENCODE signal out
VIDEO IN signal out
5
Chroma difference output
MOD R-Y out
MOD B-Y out
DIFF R-Y out
DIFF B-Y out
15
PULSE output
PAL MODE : BFP, HHK mix
NTSC MODE : BFP
V4, V6, V9,
V16, V17, V18
Voltage at each pin when SYNC is input to pin
2
(C.SYNC IN). (In clamp operation)
Page 5
TEST METHOD AND LIMITS CALCULATION METHOD
Test No. Test method and limits calculation method
1
Measure the current to flow in pin
2
11
MITSUBISHI ICs (AV COMMON)
M52390FP
NTSC/PAL ENCODER
SG2
SG18
SG17
3
SG16
4
5V
0V
1V
2µs
0V
5
Output at pin
SG2
SG16
SG17
6
SG18
15
5V
0V
0.71V
2µs
0V
5µs
64µs
52µs
10µs
E
5µs
64µs
52µs
10µs
Output at pin
SG18
SG17
SG16
15
0V
f=500kHz / 5MHz
0.5V
P-P CW
EY
7
8
9
Output at pin
15
F = 20 log (dB)
V out (5MHz)
V out (500kHz)
V out
Page 6
TEST METHOD AND LIMITS CALCULATION METHOD (cont.)
Test No. Test method and limits calculation method
MITSUBISHI ICs (AV COMMON)
M52390FP
NTSC/PAL ENCODER
10
11
12
SG2
Output at pin
SG14
Measure the element of 500kHz at pin (V12) and calculate GY as follows.
SG14
5V
0V
15
0V
Y = 20 log (dB)
G
0V
V12
0.5VP-P
5µs
64µs
.Frequency:500kHz
10
VS
0.5VP-P
0.5VP-P
13
14
(15)
.Frequency:5MHz
Measure the element of 5MHz at pin (V13) and calculate fcY as follows.
fcY = 20 log (dB)
SG2
SG18
5V
0V
1V
(SG16)
0V
Output at pin
15
2µs
10
V13
V12
5µs
64µs
52µs
10µ
DL
Page 7
TEST METHOD AND LIMITS CALCULATION METHOD (cont.)
Test No. Test method and limits calculation method
MITSUBISHI ICs (AV COMMON)
M52390FP
NTSC/PAL ENCODER
16
(17)
18
(19)
20
21
22
SG18
(SG16)
Output at pin
SG2
Output at pin
10B
0V
15
V out ( 5V)
GH = 20 log (dB)
GL = 20 log (dB)
5V
0V
19
V out ( 2.5V)
19
V out ( 5V)
19
V out ( 2.5V)
19
5µs
64µs
f=500kHz
0.5V
P-P CW
V out
VnH V(n+1)H
23
SG2
Output at pin
VB1=VnH
VB2=VnH
VB3=VnH - V(n+1)H
5V
0V
10B
5µs
PnH P(n+1)H
PPB = PnH burst phase - P(n+1)H burst phase
64µs
Page 8
TEST METHOD AND LIMITS CALCULATION METHOD (cont.)
Test No. Test method and limits calculation method
MITSUBISHI ICs (AV COMMON)
M52390FP
NTSC/PAL ENCODER
24
25
26
27
SG2
SG18
SG17
SG16
Output at pin
SG2
Output at pin
5V
0V
1V
2µs
0V
10B
R (G, B) / Burst level ratio =
5V
0V
10B
5µs
64µs
52µs
10µs
VB VC
VC
VB
5µs
64µs
0.71VP-P
28
29
30
SG2
SG18
SG17
SG16
Output at pin
VB VC
2µs
VC
VB
5µs
64µs
52µs
10µs
PB
VC/B = 20 log (dB)
5V
0V
1V
0V
10B
R (G, B) / Burst phase difference = PC - PB (deg)
0.71VP-P
PC
Page 9
TEST METHOD AND LIMITS CALCULATION METHOD (cont.)
Test No. Test method and limits calculation method
MITSUBISHI ICs (AV COMMON)
M52390FP
NTSC/PAL ENCODER
31
32
SG9
Output at pin
SG2
SG9
10B
0V
G
VIO = 20 log (dB)
FVIO = 20 log (dB)
5V
0V
0V
V out (500kHz)
0.5V
V out (5MHz)
V out (500kHz)
5µs
P-P
64µs
500kHz / 5MHz
0.5V
P-P CW
V out
286mVP-P CW
3.58MHz
33
SG12
Output at pin
10B
2V
1V
2µs
30µs
PRGB PVIN
P
SI = PRGB - PVIN (deg)
32µs
Output at RGB side
Output at VIDEO IN side
Page 10
TEST METHOD AND LIMITS CALCULATION METHOD (cont.)
Test No. Test method and limits calculation method
MITSUBISHI ICs (AV COMMON)
M52390FP
NTSC/PAL ENCODER
34
35
SG2
SG12
SG9
output at
pin
10
SG2
output at
pin
15
5V
0V
2V
1V
0V
0V
5V
2.5V
0V
2.8V
2µs
VOS=VRGB -VVIN (mV)
5µs
5µs
30µs
VVIN
64µs
32µs
286mVP-P
3.58MHZ
VRGB
64µs
HHK
36
37
SG2
output at
pin
15
5V
2.5V
0V
BFPP
5µs
64µs
BFPW
Page 11
TEST CIRCUIT
MITSUBISHI ICs (AV COMMON)
M52390FP
NTSC/PAL ENCODER
SG14
5V
SG12
47µ
4.7µ
SG16
SG17
+
SW4 SW6
10
SW9
1.5k
V6
0.1µ
10k
0.1µ
5
V4
3.58
+
0.01µ
10B
BPF
V9
4.7µ
SG9
9
1µ
45p
7
+
47µ
11
0.01µ
SWV
12
SW13
1k
+
1k
+
15
+
SW16SW17SW18
0.5VP-P
CONT
Vreg
ADD
Sync.
C.Sync
SW V
NTSC
APC SW
Y/C
MIX
ADD BPF
HPF 2
AMP 2
PAL
(Y : 6dB)
HPF 1
AMP 1
Y/C
MIXd
BPFd
ADDd
1/2fh
BFP
IDENT
BFP
1/2fh at PAL
6dB
AMP
CLAMP V
APC
VCXO
2VP-P
910
1VP-P
8
X
MATRIX
Y
R
MOD
LIM
B
R
MOD
LIM
B
90˚
SIFT
+
SG18
V18 V17 V16
10k 10k
4.7µ 4.7µ 4.7µ
+
ADD R
CLAMP R CLAMP G CLAMP B
10k
0.01µ
19
VCA
30k
CONT
BURST
R
CLAMP
R
VCA
NTSC : OFF
20 19 18 17 16 15 14 13 12 11
LPF
CONT
LPF
R
R-Y
C.Sync
ADD B
BURST
B
CLAMP
B
VCA
B
LPF
B-Y
C.Sync
BFP
1/2fh
C.Sync
HHK
MMV
12 34 567
1/2
270p
91k
SG2
2
Unit Resistance : Ω
Capacitance : F
Page 12
PRECAUTIONS FOR APPLICATION
(1) Input signal
MITSUBISHI ICs (AV COMMON)
M52390FP
NTSC/PAL ENCODER
Pin No.
2
9
12
Name
C.Sync IN
VIDEO IN
In case that
no signal is
input, this pin
should be set
to free run
mode.
Ys
5V
0V
100IRE
40IRE
40IRE
V DL Refer to (9)
Specifications
RGB ENCODE OUTPUT
V
TH=2.5V
286mV
1VP-P
P-P
2V
Ys DL Refer to (9)
1V
VIDEO OUTPUT
16
17
18
B IN
G IN
R IN
VIDEO OUTPUT
0.71VP-P
VTH=1.5V
Page 13
MITSUBISHI ICs (AV COMMON)
y
M52390FP
NTSC/PAL ENCODER
(2) Setting of free run frequency
In this IC, the VCXO circuit generates fsc. Therefore, set the
oscillator frequency of VCXO to fsc as follows before using this IC.
1) Connect pin (VIDEO IN) to GND and set it to free run mode.
2) V4 is the voltage at pin (OFFSET R) when sync is input to
pin (C.Sync IN). Apply voltage V4 - 0.5V to pin (OFFSET
2
9
4
4
R).
3) Set pin (C.Sync IN) to H. (5V is applied.)
4) Set the output frequency at pin (TRAP) by adjusting the
2
5
trimmer capacitor at pin (VCXO IN).
7
(3)Setting of chroma difference LPF
The frequency characteristics of the chroma difference LPF which
is built in this IC can be set as shown in Fig. 1 by connecting a
resistor externally to pin (fc CONT.).
The group delay characteristics also change as shown in Fig. 2.
6
0
5
-6
5
-12
-18
RGB INÆpin gain (dB)
-24
(Frequency of output at pin
when 100kHz is input is set to 0dB.)
-30
100k
20
60k
50k
40k
30k
20k
10k
5k
1M 10M
(4) Setting of Y DL
The group delay characteristics of color signal of RGB encode
output changes by connecting a resistor externally to pin (fc
20
CONT.). Therefore, set Y DL based on the delay volume (group
delay volume derived from group delay characteristics + 40ns).
In case that a trap circuit is connected to pin , take the delay
5
from +5 to +10ns into consideration.
(5) Color control characteristics
Gain in chroma section can be set as shown in Fig. 3 by applying
voltage to pin (COLOR CONT.). (The burst amplitude is fixed.)
19
3
2
1
5
0
-1
-2
Output at pin (dB)
-3
0
12345
Voltage at pin
19
Fig. 3 Color control characteristics
(As for the test conditions, refer to test No.16, 17, 18 and 19.)
Fig. 1 Frequency characteristics of
color difference LPF
(As for the test conditions, refer to test No.14 and 15.)
500
400
300
5
200
100
RGB INÆpin delay (nsec)
0
5102030405060
20
Pin R (kΩ)
Fig. 2 Group delay characteristics of
color difference LPF
(As for the test conditions, refer to test No.14 and 15.)
(6) Relation between BFP and HHK
The pulse width of GFP and HHK can be set as shown in Fig. 4 b
connecting DR externally to pin (HHK).
130
120
BFPP
BFPW
110
100
5.6µs
90
3
80
70
2.5µs
External R at pin (kΩ)
0102030405060
Time interval from sync rise at pin (47µsec)
Fig. 4 RC product at pin vs. internal pulse
(As for the test conditions, refer to test No.35, 36 and 37.)
HHK
3
47µs
3
270p
5V
2
pin Sync
0V
2
3
R
Page 14
(7) Driving of input pins
Drive pins , , and at low impedance because they
are clamped by IC input.
9 16 17 18
(8) I/O relation between sync signal and burst signal
during the period V
2
C.Sync IN
VIDEO OUT
10
(Ts:Hi)
MITSUBISHI ICs (AV COMMON)
M52390FP
NTSC/PAL ENCODER
I/O relation between sync signal and burst signal
(9) Setting of V DL and Ys DL in superimpose mode
1) V DL is used to adjust the timing of RGB encode signal and
VIDEO IN signal.
2) Ys DL is used to adjust the timing of RGB encode signal and Ys
IN signal.
3) In case that signals are input to C.SYNC IN, RGB IN, VIDEO IN
or Ys IN at the same timing, set V DL and Ys DL based on the
delay volume as below.
V DL = Y DL (Refer to (4)) + 10 (nsec)
Ys DL = Y DL - 10 (nsec)
Sync signal
Burst signal
Page 15
TYPICAL CHARACTERISTICS
THERMALDERATING (MAXIMUM RATING)
MITSUBISHI ICs (AV COMMON)
M52390FP
NTSC/PAL ENCODER
POWER DISSIPATION Pd (mW)
(900)
620
600
(450)
310
300
0
0 25 50 75 100 125
OPERATING TEMPERATURE Ta (˚C)
Standard board
Material : glass epoxy (Cu leaf pattern is put over one side of the board.)
Size : 70mm, thickness=1.6mm
Thickness of Cu leaf : 18µm
Values are measured when any
external circuits are connected
to this IC.
Values in parentheses are those
measured when the IC is
mounted on a standard board.
Page 16
APPLICATION EXAMPLE (1)
Encoding RGB video signal to NTSC/PAL signal RGB video signal input
RGB VIDEO SIGNAL INPUT
R
0.71VP-P
G
MITSUBISHI ICs (AV COMMON)
M52390FP
NTSC/PAL ENCODER
B
COMPOSITE
Sync.
2.5V
Recommended Y DL (360ns):
Toko Co., Ltd. TH317LSOS-3287
47µ
1k
Y IN
+
( )
1k(PAL ONLY)
reg
V
fc CONT.
30k
30k
4.7µ
4.7µ
4.7µ
0.01µ
Y DL
1k
Y OUT
20 19 18 17 16 15 14 13 12 11
Y/C
MIX
VCXO
Xtal
2.1V
Vreg
APC
CLAMP
VIDEO
IN
FILTER CONT
COLOR CONT
R-Y
BURST
R-Y
ADD
B-Y
B-Y
BURST
ADD
GND
RIN GIN BIN
CLAMP
MATRIX
R-Y
MOD
B-Y
MOD
MMV
R-Y CLAMP B-Y CLAMP
Sync.
ADD
Y
MIX BPF
1 2 3 4 5 6 7 8 9 10
VCC
NTSC/
PAL
SUPERIMPOSE
SW
6dB
AMP
VIDEO
OUT
+
0.01µ
47µ
(Note)
Drive at low impedance
because the RGB video signal
is clamped by IC input. Set the
amplitude of the RGB signal
(emitter follower, etc.) to
P-P (at color saturation).
0.71V
V
CC=5V
GND
Unit Resistance : Ω
Capacitance : F
91k
MMV
270p
0.1µ
CLAMP R
15µ
12p
3fsc TRAP
0.1µ
CLAMP B
VCXO
0.01µ
1.5k
1µ
APC FILTER
Example of Xtal:Nippon denpa industry Co., Ltd. AT-51
NTSC/PAL VIDEO OUTPUT
(NTSC = 3.579545MHz)
(PAL = 4.433619MHz)
Page 17
APPLICATION EXAMPLE (2)
Superimposing RGB Character Signal on NTSC/PAL Signal
(*The case that RGB signal of personal computers, etc. is
superimposed on NTSC/PAL signal as a child picture is mentioned
in parentheses.)
RGB CHARACTER SIGNAL INPUT
(*RGB child picture signal input after processing time axis)
MITSUBISHI ICs (AV COMMON)
M52390FP
NTSC/PAL ENCODER
In case that the signal which is about 350ns behind the character
(*child picture) RGB signal is directly generated as Ys signal, Ys
DL is not necessary. When the timing of RGB coincides with that of
Ys, set the delay time of Ys DL to 350ns (typ.).
Ys
R
0.71VP-P
G
B
COMPOSITE
Sync.
2.5V
fc CONT.
30k
30k
Ys DL
(350ns)
4.7µ
4.7µ
4.7µ
0.01µ
Y DL
1k
Y OUT
V
(Hi=R,G,B)
47µ
1k
Y IN
TH=1.5V
+
reg
V
1k(PAL ONLY)
( )
20 19 18 17 16 15 14 13 12 11
Y/C
MIX
VCXO
Xtal
2.1V
Vreg
APC
CLAMP
VIDEO
IN
FILTER CONT
COLOR CONT
R-Y
BURST
R-Y
ADD
B-Y
B-Y
BURST
ADD
GND
RIN GIN BIN
CLAMP
MATRIX
R-Y
MOD
B-Y
MOD
MMV
R-Y CLAMP B-Y CLAMP
Sync.
ADD
Y
MIX BPF
1 2 3 4 5 6 7 8 9 10
Recommended Y DL (360ns):
Toko Co., Ltd. TH317LSOS-3287
+
0.01µ
VCC
NTSC/
PAL
SUPER-
IMPOSE
SW
6dB
AMP
VIDEO
OUT
47µ
(Note)
Drive at low impedance
because character RGB signal
and main picture video signal
are clamped by IC input. In
case that character RGB
signal is generated at the
same timing with that of main
picture input signal, delay the
main picture input signal about
370ns. The timing to insert
characters is delayed. In
inputting Composite Sync,
input the sync signal of the
main picture.
VCC=5V
91k
270p
GND
MMV
Example of Xtal:Nippon denpa industry Co., Ltd. AT-51
(NTSC = 3.579545MHz)
(PAL = 4.433619MHz)
0.1µ
CLAMP R
15µ
12p
CLAMP B
3FSC TRAP
0.1µ
0.01µ
VCXO
1.5k
1µ
4.7µ
APC FILTER
Main picture NTSC/PAL
video signal input
NTSC/PAL VIDEO OUTPUT
Unit Resistance : Ω
Capacitance : F
Page 18
DESCRIPTION OF PIN
MITSUBISHI ICs (AV COMMON)
M52390FP
NTSC/PAL ENCODER
Pin No. Name
1
2
3
GND
C.SYNC IN
HHK
C.SYNC
3V
Peripheral circuit of pins
100µ
25k
200µ
30k
180µ
5k
25k
1k 1k
CLAMP R CLAMP B
1.5k
1.5k
200µ
200µ
RemarksPin voltage
AC : Sync input
100µ
5
TH
5k
V
0
AC
3V
50µ
HHK
0.5V
VTH=2.5V±0.3V
HHK pulse width can
be adjusted by connecting RC externally.
Recommended value
HHK:3/4H
R=91K
C=270p
RC
DC : 3.1V Recommended value of
external circuit
2k
C
14k
4
OFFSET R
36k
1.5k
4k
1k
to
VCAR
from
VCAR
1.5k
100µ
Sync
1.53k
100µ
200µ
1.53k
22k
2.1V
AC : Chroma
L
2.73k
C
3k
17p
1p
400
50µ
5k
500
30k
6k
5
TRAP
1mA
2.4V
Burst : 300mV
15
when voltage at pin
is 5V
12
µ
12
P-P
Test mode output
Hi : R-Y output
Lo : B-Y output
C=0.1µ
Recommended value of
external circuit
NTSC : 15µ
PAL : 10µ 12P
5V : Test mode setting
5
15
15
Pulse output
L C
12P
Page 19
DESCRIPTION OF PIN (cont.)
Pin No. Name
6
OFFSET B
36k
14k
Peripheral circuit of pins
2k
C
4k
1k
to
VCAB
from
VCAB
1.5k
1.5k
100µ
Sync
1.53k
100µ
200µ
1.53k
22k
MITSUBISHI ICs (AV COMMON)
M52390FP
NTSC/PAL ENCODER
RemarksPin voltage
DC : 3.1V Recommended value of
external circuit
C=0.1µ
2.1V
DC : 3.2V Free run frequency is
set by the trimmer
capacitor
60P
2k
7
8
VCXO IN
300µ
APC FILTER
300µ
300
2k
2k
300
2k
P
1
4k
C1
20k
FR HI
200µ
R
+
C2
5k
4k
100
µ 100µ 35µ 35µ
10k
30k
DC : 3.3V
In free run mode
DC : 2.7V
18k
10k
22k
AC : VIDEO 1VP-P
Pedestal section 2.9V
1.5k
1.5k
1.5k
1.5k
1.5k
1.5k
40k
0V : Carrier OFF
7
ß
characteristics
Frequency
Hi
Lo
APC voltage
Recommended value of
external circuit
R=1.5k
C1=0.001µ
C2=1µ
Clamp input
(burst timing)
Recommended value of
external circuit
C=4.7µ
9
VIDEO IN
100µ
150µ
VIDEO
4k
C
1.5k
1.5k
250µ
BFP
FR Hi
30k
1V
9
0V : Free run mode
setting
Page 20
DESCRIPTION OF PIN (cont.)
Pin No. Name
Peripheral circuit of pins
600µ
MITSUBISHI ICs (AV COMMON)
M52390FP
NTSC/PAL ENCODER
RemarksPin voltage
AC : VIDEO 2VP-P
Pedestal section 1.8V
10
11
12
13
VIDEO OUT
VCC
YS
VRE G
30k
900µ
DC : 5V
Switching signal input
YS
15k
5k
3k
3k
for superimposing
5
V
TH
0
Hi : picture insertion
(RGB IN output)
100µ
10k
30k
40k
P
5
DC : 2.1V
8k
9k
500
I
CC : 50mA
VTH=1.5±0.3V
Hi : RGB IN output
Lo : VIDEO IN output
Setting of output at pin
when voltage at pin is
V
5
12 5
Hi R-Y
Lo B-Y
15
Output at pin
Recommended value of
external circuit
C=47µ
13
5
25k 14k 1k
etc.
1.53k
1.53k
25k
12k
R1
OUT
AC : Y 0.5VP-P
+
Pedestal section 2.1V
C
PAL mode at 2mA
Y
14
15
Y IN
Y OUT
1k
100
200
1.5m
2P
µ
10k
10k
200µ
5k
30k
50µ
DL
IN
R2
AC : Y 1VP-P
Pedestal section 2.1V
5 12 5
Test mode output when
voltage at pin is 5V
Pulse output
5
Hi
Lo
Output at pin
R-Y
B-Y
Page 21
DESCRIPTION OF PIN (cont.)
BFP
BFP
BFP
20k
10k
10k
40k
Pin No.
Name Peripheral circuit of pins Pin voltage Remarks
1.53k
1.53k
MITSUBISHI ICs (AV COMMON)
M52390FP
NTSC/PAL ENCODER
AC : B0.71VP-P
+
B
C
Sync section : 2.9V
Clamp input (burst timing)
C=4.7µ
16
B IN
1k
2.1V
200µ
17
G IN
200µ
1.53k
+
1.53k
1k
200µ
AC : B0.71V
G
C
Sync section : 2.9V
P-P
Clamp input (burst timing)
C=4.7µ
2.1V
200µ
200µ
1.53k
+
1.53k
200µ
AC : B0.71VP-P
R
C
Sync section : 2.9V
Clamp input (burst timing)
C=4.7µ
18
R IN
1k
2.1V
200µ
200µ
200µ
DC : 2.5V
Color control of RGB
encode output
5V : Chroma section+2dB
10k
0.01µ
19
COLOR
CONT.
2.5V
50µ
50µ
50µ
2.5V : Standard
0V : Chroma section-3dB
Page 22
DESCRIPTION OF PIN (cont.)
Pin No. Name Peripheral circuit of pins
20k
20k 10k 16k
MITSUBISHI ICs (AV COMMON)
M52390FP
NTSC/PAL ENCODER
Pin voltage
DC : 3.3V
Remarks
fc of LPF can be adjusted
by connecting a resistor
externally.
R=30k
20
fc. CONT.
100
R
10k
34k
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