M52390FP [MITSUBISHI]
NTSC/PAL ENCODER; NTSC / PAL编码器
| 型号： | M52390FP |
| 厂家： | 
Mitsubishi Group |
| 描述： | NTSC/PAL ENCODER |
| 文件： | 总22页 (文件大小：237K) |
| 中文： | 中文翻译 | 下载： | 下载PDF数据表文档文件 |
MITSUBISHI ICs (AV COMMON)
M52390FP
NTSC/PAL ENCODER
DESCRIPTION
PIN CONFIGURATION (TOP VIEW)
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.
GND
C.Sync IN
HHK
LPF fc CONT.
COLOR CONT.
R IN
20
19
18
17
16
15
14
13
12
11
1
2
3
FEATURES
CLAMP R
3fsc TRAP
CLAMP B
VCXO
G IN
4
RGB encode
B IN
5
•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.
Y OUT
Y IN
6
7
Vreg
APC FILTER
VIDEO IN
VIDEO OUT
8
Ys IN
9
VCC
10
•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.
Outline 20P2N-A
(Lead pitch:1.27mm)
Superimpose function
•Ys IN (control input) is used for switching 2 input signals, VIDEO
IN and RGB IN.
APPLICATION
•Because high-speed analog switch is built-in, even microscopic
characters can be inserted.
TV, VCR, monitor, and other AV equipments
•Built-in an APC circuit to adjust tint of the parent picture (VIDEO
IN) and the RGB encode signal automatically.
RECOMMENDED OPERATING CONDITION
Supply voltage range .................................................... 4.7 to 5.3V
Rated supply voltage ................................................................ 5V
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.
BLOCK DIAGRAM
COLOR
Vreg
13
LPF fc CONT.
20
R IN
0.72VP-P
G IN
B IN
Y OUT
15
Y IN
14
Ys IN
12
VCC=5V
11
CONT.
19
18
17
16
1VP-P
0.5VP-P
CLAMP R
CLAMP G
CLAMP B
LPF
VCA
SYNC
ADD
SWV
CONT
VREG
CONT CONT
C.SYNC
MATRIX
Y
NTSC
PAL
SW V
APC SW
LPF
R
VCA
R
CLAMP
R
BURST
ADD R
MOD
R
Y/C
MIX
ADD
BPF
R-Y
NTSC : OFF
(Y : 6dB)
AMP 2
AMP 1
HPF 2
LIM
R
VCA
B
BURST
ADD B
LPF
B
CLAMP
B
MOD
B
Y/C
MIXd
BPFd
ADDd
HPF 1
1/2fh
LIM
B
C.SYNC 1/2fh BFP(CP)
IDENT
X 1/2fh at PAL
BFP
90˚
6dB
AMP
VCXO
CLAMP V
1/2
MMV HHK
APC
BFP
SIFT
2VP-P
1VP-P
1
2
3
4
5
6
7
8
9
10
HHK
3fsc TRAP
VCXO
APC FILTER VIDEO IN
GND
C.Sync IN
CLAMP R
CLAMP B
VIDEO OUT
MITSUBISHI ICs (AV COMMON)
M52390FP
NTSC/PAL ENCODER
ABSOLUTE MAXIMUM RATINGS (Ta=25˚C, unless otherwise noted)
Symbol
Parameter
Ratings
7
Unit
V
Supply voltage
VCC
620
(900)
Pd
Power dissipation
mW
Topr
Tstg
-20 to 75
Operating temperature
Storage temperature
˚C
˚C
-40 to 125
6.2
(9.0)
K
Thermal derating (Ta≥25˚C)
mW/˚C
Values in parentheses are those measured when the IC is mounted on a standard board.
ELECTRICAL CHARACTERISTICS (Ta=25˚C, Vcc=5V, Sa2=sync input, unless otherwise noted)
Test
No.
Limits
Typ.
Test
point
Symbol
ICC1
Parameter
Current dissipation 1
Current dissipation 2
Test conditions
NTSC MODE
Unit
mA
mA
Min.
35
Max.
65
50
52
11
1
12
5V
PAL MODE (SW13 : ON)
ICC2
11
37
67
2
12
5V
RGB IN Y OUT
ER
3
EG
4
EB
5
EY
6
Matrix ratio R
SG18 : 1VP-P
15
15
15
15
0.27
0.53
0.09
0.63
0.30
0.59
0.11
0.71
0.33
0.65
0.13
0.79
VP-P
VP-P
VP-P
VP-P
Matrix ratio G
SG17 : 1VP-P
Matrix ratio B
SG16 : 1VP-P
Y level at RGB 100%
SG16, SG17, SG18 : 0.71VP-P
SG18 : 500kHz/5MHz, 0.5VP-P CW
SW16, 17, 18 : ON
R IN - Y OUT frequency characteristics
G IN - Y OUT frequency characteristics
B IN - Y OUT frequency characteristics
FR
7
-1.5
-1.5
-1.5
0
0
0
1.5
1.5
1.5
dB
dB
dB
15
15
15
2
0V (SG2 : OFF)
SG17 : 500kHz/5MHz, 0.5VP-P CW
SW16, 17, 18 : ON
FG
8
2
0V (SG2 : OFF)
SG16 : 500kHz/5MHz, 0.5VP-P CW
SW16, 17, 18 : ON
FB
9
2
0V (SG2 : OFF)
Sync level 1
Sync level 2
NTSC MODE
15
15
257
270
286
300
315
330
mVP-P
mVP-P
VS1
VS2
10
11
PAL MODE (SW13 : ON)
Y IN VIDEO OUT
SG14 : 500kHz, 0.5VP-P CW
10
10
GY
12
10.5
-1.5
12
0
13.5
1.5
dB
dB
Y IN - VIDEO OUT Gain
12
5V
Y IN - VIDEO OUT frequency
characteristics
SG14 : 5MHz, 0.5VP-P CW
FY
13
12
5V
RGB IN TRAP
SG18 : 1VP-P
14
15
5
5
DL(R-Y)
DL(B-Y)
Delay (R-Y)
Delay (B-Y)
210
210
310
310
410
410
ns
ns
15
12
7
7
5V,
5V,
0V
0V
SG16 : 1VP-P
15
12
0V,
5V,
SG18 : 500kHz, 0.5VP-P CW
SW4, 6, 16, 17, 18 : ON
5
5
5
16
17
18
GH(R-Y)
GH(B-Y)
GL(R-Y)
Gain (R-Y) VCA:Hi
Gain (B-Y) VCA:Hi
Gain (R-Y) VCA:Lo
1
1
2
2
3.5
3.5
-2
dB
dB
dB
15
12
7
19
0V, 5V/2.5V
5V,
5V,
0V (SG2 : OFF)
2
SG16 : 500kHz, 0.5VP-P CW
SW4, 6, 16, 17, 18 : ON
15
12
7
19
0V, 5V/2.5V
5V,
0V,
2 0V (SG2 : OFF)
SG18 : 500kHz, 0.5VP-P CW
SW4, 6, 16, 17, 18 : ON
-4.5
-3
15
12
7
19
5V,
5V,
0V,
0V/2.5V
0V (SG2 : OFF)
2
MITSUBISHI ICs (AV COMMON)
M52390FP
NTSC/PAL ENCODER
ELECTRICAL CHARACTERISTICS (cont.)
Limits
Typ.
Test
point
Test
No.
Symbol
Parameter
Test conditions
Unit
dB
Min.
-4.5
Max.
-2
SG16 : 500kHz, 0.5VP-P CW
SW4, 6, 16, 17, 18 : ON
15 5V, 12 0V, 7 0V, 19 0V/2.5V
Gain (B-Y)
VCA:Lo
5
-3
GL(B-Y)
19
0V (SG2 : OFF)
2
RGB IN VIDEO OUT
NTSC MODE
10B
10B
243
255
-30
82
286
300
0
329
345
30
mVP-P
mVP-P
mVP-P
deg
VB1
NTSC burst level
20
21
22
23
24
25
26
27
28
29
30
12
5V
PAL MODE (SW13 : ON)
VB2
PAL burst level
12
5V
PAL MODE (SW13 : ON)
10B
10B
VB3
PAL burst level difference
PAL burst phase difference
R/burst level ratio
12
5V
PAL MODE (SW13 : ON)
PPB
VR/B
VG/B
VB/B
VC/B
PR/B
PG/B
PB/B
90
98
12
5V
SG18 : 0.71VP-P
10B
10B
10B
2.68
2.51
1.91
-
3.15
2.95
2.25
-40
104
241
347
3.62
3.39
2.59
-28
12
5V
SG17 : 0.71VP-P
G/burst level ratio
12
5V
SG16 : 0.71VP-P
B/burst level ratio
12
5V
NTSC MODE
10B
10B
10B
Carrier leak in NTSC mode
R/burst phase difference
G/burst phase difference
B/burst phase difference
dB
12
5V
SG18 : 0.71VP-P
96
112
249
355
deg
deg
deg
12
5V
SG17 : 0.71VP-P
233
339
5V
12
SG16 : 0.71VP-P
10B
12
5V
VIDEO IN
VIDEO OUT
SG9 : 500kHz, 0.5VP-P CW
SW9 : ON
12 0V, 2 0V (SG2 : OFF)
VIDEO IN VIDEO OUT Gain
10
10
GVIO
5
6
0
7
dB
dB
31
32
SG9 : 5MHz, 0.5VP-P CW
SW9 : ON
VIDEO IN VIDEO OUT frequency
characteristics
FVIO
-1.5
1.5
12 0V, 2 0V (SG2 : OFF)
SUPER IMPOSE
SG9 : 3.58MHz, 286mVP-P CW
SG12 : 1VP-P
RGB/VIDEO IN burst phase difference
DC offset
10B
10
PSI
33
-5
0
0
5
deg
mV
SG9 : burst, 286mVP-P
SG12 : 1VP-P
VOS
34
MMV
35
-20
20
2
PAL MODE (SW13 : ON)
HHK
HHK width
40
47
54
µs
5
5V
15
2
BFPP
BFP point (burst point)
BFP width (burst width)
5V
4.5
2.0
5.6
2.5
6.7
3.0
µs
µs
5
36
37
15
BFPW
5
15
5V
MITSUBISHI ICs (AV COMMON)
M52390FP
NTSC/PAL ENCODER
ELECTRICAL CHARACTERISTICS TEST METHOD
Mode table (common to each test)
Mode
Conditions
Functions
9
FREE RUN MODE
VCXO FREE RUN
0 ~ 0.3V
13
PAL MODE
Carrier phase for MOD R is inverted on line
2 ~ 2.2mA
12
10
VIDEO OUT
RGB ENCODE signal out
VIDEO IN signal out
Hi : 2 ~ 5V
Lo : 0 ~ 1V
SUPER IMPOSE MODE
15
12
7
5
Chroma difference output
MOD R-Y out
MOD B-Y out
DIFF R-Y out
DIFF B-Y out
4.7 ~ 5V
4.7 ~ 5V
4.7 ~ 5V
4.7 ~ 5V
2 ~ 5V
OPEN
OPEN
0 ~ 0.3V
0 ~ 0.3V
TEST MODE MR
TEST MODE MB
TEST MODE DR
TEST MODE DB
0 ~ 1V
2 ~ 5V
0 ~ 1V
15
PULSE output
5
TEST MODE P
PAL MODE : BFP, HHK mix
NTSC MODE : BFP
4.7 ~ 5V
V4, V6, V9,
V16, V17, V18
Voltage at each pin when SYNC is input to pin
2
(C.SYNC IN). (In clamp operation)
MITSUBISHI ICs (AV COMMON)
M52390FP
NTSC/PAL ENCODER
TEST METHOD AND LIMITS CALCULATION METHOD
Test No.
Test method and limits calculation method
1
2
11
Measure the current to flow in pin
5V
5µs
SG2
0V
64µs
1V
0V
SG18
SG17
SG16
52µs
2µs
3
4
5
10µs
E
Output at pin
15
5V
0V
5µs
SG2
64µs
0.71V
0V
SG16
SG17
SG18
52µs
2µs
6
10µs
EY
15
Output at pin
SG18
SG17
SG16
f=500kHz / 5MHz
0.5VP-P CW
0V
7
8
9
V out
Output at pin
15
V out (5MHz)
F = 20 log
(dB)
V out (500kHz)
MITSUBISHI ICs (AV COMMON)
M52390FP
NTSC/PAL ENCODER
TEST METHOD AND LIMITS CALCULATION METHOD (cont.)
Test No.
Test method and limits calculation method
5V
0V
5µs
SG2
10
11
64µs
Output at pin
15
VS
0.5VP-P
0V
SG14
.Frequency:500kHz
(V12) and calculate GY as follows.
(dB)
12
10
Measure the element of 500kHz at pin
V12
0.5VP-P
GY = 20 log
0.5VP-P
0V
SG14
.Frequency:5MHz
13
Measure the element of 5MHz at pin
fcY = 20 log
(V13) and calculate fcY as follows.
10
V13
V12
(dB)
5V
5µs
SG2
0V
64µs
1V
SG18
52µs
(SG16)
2µs
14
(15)
0V
10µ
Output at pin 15
DL
MITSUBISHI ICs (AV COMMON)
M52390FP
NTSC/PAL ENCODER
TEST METHOD AND LIMITS CALCULATION METHOD (cont.)
Test No.
Test method and limits calculation method
f=500kHz
SG18
(SG16)
0V
0.5VP-P CW
V out
Output at pin
16
(17)
18
15
(19)
V out (
5V)
19
GH = 20 log
GL = 20 log
(dB)
(dB)
V out ( 2.5V)
19
V out (
5V)
19
V out ( 2.5V)
19
5V
0V
5µs
SG2
64µs
VnH
V(n+1)H
20
21
22
10B
Output at pin
VB1=VnH
VB2=VnH
VB3=VnH - V(n+1)H
5V
0V
5µs
SG2
64µs
23
10B
Output at pin
PnH
P(n+1)H
PPB = PnH burst phase - P(n+1)H burst phase
MITSUBISHI ICs (AV COMMON)
M52390FP
NTSC/PAL ENCODER
TEST METHOD AND LIMITS CALCULATION METHOD (cont.)
Test No.
Test method and limits calculation method
5V
0V
5µs
SG2
64µs
1V
0V
SG18
SG17
SG16
52µs
2µs
0.71VP-P
24
25
26
10µs
10B
Output at pin
VB
VC
VC
R (G, B) / Burst level ratio =
VB
5V
0V
5µs
SG2
64µs
10B
Output at pin
27
VB
VC
VC
VB
VC/B = 20 log
(dB)
5V
0V
5µs
SG2
64µs
1V
SG18
SG17
SG16
52µs
2µs
0.71VP-P
28
29
30
0V
10µs
10B
Output at pin
PC
PB
R (G, B) / Burst phase difference = PC - PB (deg)
MITSUBISHI ICs (AV COMMON)
M52390FP
NTSC/PAL ENCODER
TEST METHOD AND LIMITS CALCULATION METHOD (cont.)
Test No.
Test method and limits calculation method
500kHz / 5MHz
0.5VP-P CW
0V
SG9
V out
10B
Output at pin
31
32
V out (500kHz)
0.5VP-P
GVIO = 20 log
FVIO = 20 log
(dB)
(dB)
V out (5MHz)
V out (500kHz)
5V
0V
5µs
SG2
64µs
286mVP-P CW
3.58MHz
0V
SG9
Output at RGB side
2V
1V
32µs
33
2µs
SG12
30µs
Output at VIDEO IN side
10B
Output at pin
PRGB
PVIN
PSI = PRGB - PVIN (deg)
MITSUBISHI ICs (AV COMMON)
M52390FP
NTSC/PAL ENCODER
TEST METHOD AND LIMITS CALCULATION METHOD (cont.)
Test No. Test method and limits calculation method
5µs
5V
0V
SG2
64µs
2V
1V
2µs
SG12
30µs
32µs
34
286mVP-P
3.58MHZ
0V
0V
SG9
output at
pin
10
VRGB
VVIN
VOS=VRGB -VVIN (mV)
5µs
5V
2.5V
0V
SG2
64µs
35
output at
2.8V
pin
15
HHK
5µs
5V
2.5V
0V
SG2
64µs
36
37
output at
pin
15
BFPW
BFPP
MITSUBISHI ICs (AV COMMON)
M52390FP
NTSC/PAL ENCODER
TEST CIRCUIT
+
µ
4 . 7
S W 1 3
µ
0 . 0 1
C . S y n c
C . S y n c
Unit Resistance : Ω
Capacitance : F
MITSUBISHI ICs (AV COMMON)
M52390FP
NTSC/PAL ENCODER
PRECAUTIONS FOR APPLICATION
(1) Input signal
Specifications
Name
Pin No.
2
C.Sync IN
5V
0V
VTH=2.5V
9
VIDEO IN
1VP-P
100IRE
40IRE
In case that
no signal is
input, this pin
should be set
to free run
mode.
40IRE
286mVP-P
V DL Refer to (9)
12
Ys
RGB ENCODE OUTPUT
Ys DL Refer to (9)
2V
1V
VTH=1.5V
VIDEO OUTPUT
VIDEO OUTPUT
16
17
18
B IN
G IN
R IN
0.71VP-P
MITSUBISHI ICs (AV COMMON)
M52390FP
NTSC/PAL ENCODER
(2) Setting of free run frequency
(4) Setting of Y DL
In this IC, the VCXO circuit generates fsc. Therefore, set the
oscillator frequency of VCXO to fsc as follows before using this IC.
The group delay characteristics of color signal of RGB encode
20
output changes by connecting a resistor externally to pin
(fc
1) Connect pin (VIDEO IN) to GND and set it to free run mode.
9
CONT.). Therefore, set Y DL based on the delay volume (group
2) V4 is the voltage at pin
(OFFSET R) when sync is input to
4
delay volume derived from group delay characteristics + 40ns).
5
pin 2 (C.Sync IN). Apply voltage V4 - 0.5V to pin 4 (OFFSET
R).
In case that a trap circuit is connected to pin
from +5 to +10ns into consideration.
, take the delay
2
3) Set pin
4) Set the output frequency at pin
trimmer capacitor at pin 7 (VCXO IN).
(C.Sync IN) to H. (5V is applied.)
5
(TRAP) by adjusting the
(5) Color control characteristics
Gain in chroma section can be set as shown in Fig. 3 by applying
voltage to pin 19 (COLOR CONT.). (The burst amplitude is fixed.)
(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
3
2
20
resistor externally to pin
(fc CONT.).
The group delay characteristics also change as shown in Fig. 2.
1
6
0
0
-1
-2
-3
60k
-6
50k
40k
30k
-12
20k
10k
5k
0
1
2
3
4
5
-18
19
Voltage at pin
Fig. 3 Color control characteristics
(As for the test conditions, refer to test No.16, 17, 18 and 19.)
-24
-30
1M
10M
100k
(6) Relation between BFP and HHK
Fig. 1 Frequency characteristics of
color difference LPF
(As for the test conditions, refer to test No.14 and 15.)
The pulse width of GFP and HHK can be set as shown in Fig. 4 by
connecting DR externally to pin 3 (HHK).
130
500
400
300
200
100
BFPW
BFPP
120
110
HHK
100
90
5.6µs
47µs
3
80
70
R
270p
2.5µs
5V
2
pin
Sync
0V
0
5 10
20
30
20
40
50
60
0
10
20
30
40
50
60
Pin
R (kΩ)
Time interval from sync rise at pin
(47µsec)
2
Fig. 2 Group delay characteristics of
3
Fig. 4 RC product at pin
vs. internal pulse
color difference LPF
(As for the test conditions, refer to test No.14 and 15.)
(As for the test conditions, refer to test No.35, 36 and 37.)
MITSUBISHI ICs (AV COMMON)
M52390FP
NTSC/PAL ENCODER
(7) Driving of input pins
Drive pins 9 , 16 , 17 and 18 at low impedance because they
are clamped by IC input.
(8) I/O relation between sync signal and burst signal
during the period V
2
C.Sync IN
VIDEO OUT
(Ts:Hi)
10
Sync signal
Burst signal
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)
MITSUBISHI ICs (AV COMMON)
M52390FP
NTSC/PAL ENCODER
TYPICAL CHARACTERISTICS
THERMAL DERATING (MAXIMUM RATING)
(900)
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.
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
MITSUBISHI ICs (AV COMMON)
M52390FP
NTSC/PAL ENCODER
APPLICATION EXAMPLE (1)
Encoding RGB video signal to NTSC/PAL signal RGB video signal input
RGB VIDEO SIGNAL INPUT
R
0.71VP-P
G
Recommended Y DL (360ns):
Toko Co., Ltd. TH317LSOS-3287
B
COMPOSITE
Sync.
2.5V
+
1k
VCC=5V
+
20
19
18
17
16
15
14
13
12
11
VCC
2.1V
Vreg
RIN
GIN
BIN
FILTER CONT
COLOR CONT
Sync.
ADD
CLAMP
NTSC/
PAL
MATRIX
SUPER-
IMPOSE
SW
Y
Y/C
MIX
R-Y
R-Y
BURST
ADD
MOD
R-Y
B-Y
MIX
BPF
(Note)
B-Y
BURST
ADD
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
0.71VP-P (at color saturation).
B-Y
MOD
6dB
AMP
APC
CLAMP
MMV
VCXO
VIDEO
IN
VIDEO
OUT
R-Y CLAMP
4
B-Y CLAMP
6
GND
1
Xtal
2
3
5
7
8
9
10
NTSC/PAL VIDEO OUTPUT
GND
Example of Xtal:Nippon denpa industry Co., Ltd. AT-51
(NTSC = 3.579545MHz)
Unit Resistance : Ω
Capacitance : F
(PAL = 4.433619MHz)
MITSUBISHI ICs (AV COMMON)
M52390FP
NTSC/PAL ENCODER
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.)
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.).
RGB CHARACTER SIGNAL INPUT
(*RGB child picture signal input after processing time axis)
Ys
R
Ys DL
(350ns)
VTH=1.5V
(Hi=R,G,B)
0.71VP-P
G
B
COMPOSITE
Sync.
Recommended Y DL (360ns):
Toko Co., Ltd. TH317LSOS-3287
2.5V
+
1k
VCC=5V
+
20
19
18
17
16
15
14
13
12
11
VCC
2.1V
Vreg
RIN
GIN
BIN
FILTER CONT
COLOR CONT
Sync.
ADD
CLAMP
NTSC/
PAL
MATRIX
SUPER-
IMPOSE
SW
Y
Y/C
MIX
R-Y
R-Y
BURST
ADD
(Note)
MOD
R-Y
B-Y
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.
MIX
BPF
B-Y
BURST
ADD
B-Y
MOD
6dB
AMP
APC
CLAMP
MMV
VCXO
VIDEO
IN
VIDEO
OUT
R-Y CLAMP
4
B-Y CLAMP
6
GND
1
Xtal
2
3
5
7
8
9
10
NTSC/PAL VIDEO OUTPUT
GND
Main picture NTSC/PAL
video signal input
Example of Xtal:Nippon denpa industry Co., Ltd. AT-51
(NTSC = 3.579545MHz)
Unit Resistance : Ω
(PAL = 4.433619MHz)
Capacitance : F
MITSUBISHI ICs (AV COMMON)
M52390FP
NTSC/PAL ENCODER
DESCRIPTION OF PIN
Pin voltage
Remarks
Pin No.
1
Name
GND
Peripheral circuit of pins
AC : Sync input
VTH=2.5V±0.3V
CLAMP R CLAMP B
100µ
100µ
25k
C.SYNC
5
200µ
5k
VTH
0
5k
2
C.SYNC IN
200µ
200µ
HHK pulse width can
be adjusted by conne-
cting RC externally.
AC
3V
HHK
180µ
0.5V
Recommended value
HHK:3/4H
R=91K
50µ
1k
1k
C=270p
3
HHK
3V
R
C
DC : 3.1V
Recommended value of
external circuit
C=0.1µ
2k
4k
22k
C
14k
1k
4
OFFSET R
36k
to
VCAR
from
VCAR
100µ
100µ
Sync
200µ
AC : Chroma
2.4V
Recommended value of
external circuit
L
L
C
NTSC : 15µ 12P
PAL : 10µ 12P
C
5k
6k
2.73k
3k
Burst : 300mVP-P
500
5
TRAP
15
Test mode output
5V : Test mode setting
5
17p
when voltage at pin 15
is 5V
15 Pulse output
30k
1p
12
Hi : R-Y output
Lo: B-Y output
50µ
400µ
12
1mA
MITSUBISHI ICs (AV COMMON)
M52390FP
NTSC/PAL ENCODER
DESCRIPTION OF PIN (cont.)
Pin voltage
Remarks
Pin No.
Name
Peripheral circuit of pins
DC : 3.1V
Recommended value of
external circuit
C=0.1µ
2k
4k
22k
C
14k
1k
6
OFFSET B
36k
to
VCAB
from
VCAB
100µ
100µ
Sync
200µ
DC : 3.2V
Free run frequency is
set by the trimmer
capacitor
60P
2k
300
300
7
VCXO IN
2k
2k
0V : Carrier OFF
7
2k
30k
1P
200µ
300µ
C1
ß characteristics
Frequency
DC : 3.3V
In free run mode
DC : 2.7V
R
+
10k
C2
18k
10k
4k
Hi
4k
8
APC FILTER
Lo
APC voltage
Recommended value of
external circuit
R=1.5k
20k
C1=0.001µ
C2=1µ
5k
100µ 100µ
35µ
35µ
300µ
FR HI
AC : VIDEO 1VP-P
Pedestal section 2.9V
Clamp input
(burst timing)
Recommended value of
external circuit
C=4.7µ
9
VIDEO IN
9
0V : Free run mode
setting
C
VIDEO
BFP
1V
FR Hi
100µ 150µ
250µ
MITSUBISHI ICs (AV COMMON)
M52390FP
NTSC/PAL ENCODER
DESCRIPTION OF PIN (cont.)
Pin voltage
Remarks
Pin No.
Name
Peripheral circuit of pins
AC : VIDEO 2VP-P
Pedestal section 1.8V
600µ
10
VIDEO OUT
900µ
DC : 5V
ICC : 50mA
11
12
VCC
VTH=1.5±0.3V
Hi : RGB IN output
Lo : VIDEO IN output
Switching signal input
for superimposing
YS
5k
5
VTH
0
YS
Setting of output at pin
when voltage at pin 15 is
5
V
5
Hi : picture insertion
(RGB IN output)
Output at pin
R-Y
12
Hi
5
10k
100µ
Lo
B-Y
Recommended value of
external circuit
C=47µ
DC : 2.1V
500
8k
13
VRE G
9k
13
25k
25k
14k 1k
12k
PAL mode at 2mA
etc.
AC : Y 0.5VP-P
Pedestal section 2.1V
R1
+
C
OUT
1.53k
1.53k
Y
DL
14
Y IN
1k
IN
R2
2P
10k
10k
200µ
200µ
AC : Y 1VP-P
Pedestal section 2.1V
100
5k
15
Y OUT
Output at pin
R-Y
5
12
Hi
5
Test mode output when
30k
voltage at pin
Pulse output
5 is 5V
50µ
B-Y
Lo
1.5m
MITSUBISHI ICs (AV COMMON)
M52390FP
NTSC/PAL ENCODER
DESCRIPTION OF PIN (cont.)
Pin No.
Name
Peripheral circuit of pins
Pin voltage
Remarks
Clamp input (burst timing)
C=4.7µ
AC : B0.71VP-P
Sync section : 2.9V
+
B
C
1k
16
B IN
2.1V
BFP
200µ
200µ
200µ
Clamp input (burst timing)
AC : B0.71VP-P
C=4.7µ
+
Sync section : 2.9V
G
C
1k
17
G IN
2.1V
BFP
200µ
200µ
200µ
Clamp input (burst timing)
AC : B0.71VP-P
C=4.7µ
+
Sync section : 2.9V
R
C
18
R IN
1k
2.1V
BFP
200µ
200µ
200µ
Color control of RGB
encode output
DC : 2.5V
5V : Chroma section+2dB
2.5V : Standard
0V : Chroma section-3dB
10k
0.01µ
40k
20k
COLOR
CONT.
19
10k
10k
50µ
50µ
50µ
MITSUBISHI ICs (AV COMMON)
M52390FP
NTSC/PAL ENCODER
DESCRIPTION OF PIN (cont.)
Pin No.
Name
Peripheral circuit of pins
Remarks
Pin voltage
DC : 3.3V
fc of LPF can be adjusted
by connecting a resistor
externally.
R=30k
20k
20k
10k
16k
34k
fc. CONT.
20
100
R
10k
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