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MITSUBISHI ICs (AV COMMON)
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.
PIN CONFIGURATION (TOP VIEW)
GND C.Sync IN HHK 3fsc TRAP CLAMP B VCXO APC FILTER VIDEO IN
1 2 3
20 LPF fc CONT. 19 COLOR CONT. 18 R IN 17 G IN 16 B IN 15 Y OUT 14 Y IN 13 Vreg 12 Ys IN 11 VCC
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 (75) 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.
CLAMP R 4
5 6 7 8 9
M52390FP
VIDEO OUT 10
Outline 20P2N-A (Lead pitch:1.27mm)
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 COLOR CONT. 19 R IN 0.72VP-P 18 CLAMP R
BFP
G IN 17 CLAMP G
B IN 16 CLAMP B
C.SYNC
Y OUT 15 1VP-P
Y IN 14 0.5VP-P
Vreg 13
Ys IN 12
VCC=5V 11
LPF CONT
VCA CONT
SYNC ADD
VREG
SWV CONT
MATRIX Y
NTSC
R-Y
LPF R
VCA R
CLAMP R
C.SYNC
BURST ADD R
NTSC : OFF
MOD R LIM R
ADD
BPF
Y/C MIX
(Y : 6dB) PAL
APC SW
SW V
AMP 2
HPF 2
LPF B
C.SYNC 1/2fh
VCA B
BFP(CP)
CLAMP B
C.SYNC
BURST ADD B
MOD B LIM B 90 SIFT
ADDd
BPFd
1/2fh
Y/C MIXd IDENT
AMP 1
HPF 1
X 1/2fh at PAL
BFP
1/2
MMV
HHK
VCXO
APC
BFP
CLAMP V 1VP-P
6dB AMP 2VP-P
1 GND
2 C.Sync IN
3 HHK
4 CLAMP R
5 3fsc TRAP
6 CLAMP B
7 VCXO
8 APC FILTER
9 VIDEO IN
10 VIDEO OUT
MITSUBISHI ICs (AV COMMON)
M52390FP
NTSC/PAL ENCODER
ABSOLUTE MAXIMUM RATINGS (Ta=25C, unless otherwise noted)
Symbol VCC Pd Topr Tstg K Parameter Supply voltage Power dissipation Operating temperature Storage temperature Thermal derating (Ta25C) Ratings 7 620 (900) -20 to 75 -40 to 125 6.2 (9.0) Unit V mW C C mW/C
Values in parentheses are those measured when the IC is mounted on a standard board.
ELECTRICAL CHARACTERISTICS (Ta=25C, Vcc=5V, Sa2=sync input, unless otherwise noted)
Test No. 1 2 RGB IN 3 4 5 6 7 ER EG EB EY FR Symbol ICC1 ICC2 Y OUT Matrix ratio R Matrix ratio G Matrix ratio B Y level at RGB 100% SG18 : 1VP-P SG17 : 1VP-P SG16 : 1VP-P SG16, SG17, SG18 : 0.71VP-P
15 15 15 15
Parameter Current dissipation 1 Current dissipation 2
Test conditions NTSC MODE 12 5V PAL MODE (SW13 : ON) 12 5V
Test point
11
Min. 35 37
Limits Typ. 50 52
Max. 65 67
Unit mA mA
11
0.27 0.53 0.09 0.63 -1.5
0.30 0.59 0.11 0.71 0
0.33 0.65 0.13 0.79 1.5
VP-P VP-P VP-P VP-P dB
SG18 : 500kHz/5MHz, 0.5VP-P CW R IN - Y OUT frequency characteristics SW16, 17, 18 : ON 2 0V (SG2 : OFF) SG17 : 500kHz/5MHz, 0.5VP-P CW
G IN - Y OUT frequency characteristics SW16, 17, 18 : ON
2
15
8
FG
15
-1.5
0
1.5
dB
0V (SG2 : OFF)
15
9 10 11 Y IN 12 13 RGB IN 14 15
FB
B IN - Y OUT frequency characteristics
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 5V, 12 5V, SG16 : 1VP-P 15 5V, 12 0V,
-1.5 257 270
0 286 300
1.5 315 330
dB mVP-P mVP-P
Sync level 1 VS1 Sync level 2 VS2 VIDEO OUT GY FY TRAP DL(R-Y) DL(B-Y) Delay (R-Y) Delay (B-Y) Y IN - VIDEO OUT Gain Y IN - VIDEO OUT frequency characteristics
15 15
10
10.5 -1.5
12 0
13.5 1.5
dB dB
10
7
0V 0V
5
210 210
310 310
410 410
ns ns
7
5
16
GH(R-Y)
Gain (R-Y) VCA:Hi
SG18 : 500kHz, 0.5VP-P CW SW4, 6, 16, 17, 18 : ON 15 5V, 12 5V, 7 0V, 19 5V/2.5V 2 0V (SG2 : OFF) SG16 : 500kHz, 0.5VP-P CW SW4, 6, 16, 17, 18 : ON 15 5V, 12 0V, 7 0V, 19 5V/2.5V 2 0V (SG2 : OFF) SG18 : 500kHz, 0.5VP-P CW SW4, 6, 16, 17, 18 : ON 15 5V, 12 5V, 7 0V, 19 0V/2.5V 2 0V (SG2 : OFF)
5
1
2
3.5
dB
17
GH(B-Y)
Gain (B-Y) VCA:Hi
5
1
2
3.5
dB
18
GL(R-Y)
Gain (R-Y) VCA:Lo
5
-4.5
-3
-2
dB
MITSUBISHI ICs (AV COMMON)
M52390FP
NTSC/PAL ENCODER
ELECTRICAL CHARACTERISTICS (cont.)
Test No. Symbol Parameter Test conditions SG16 : 500kHz, 0.5VP-P CW SW4, 6, 16, 17, 18 : ON 15 5V, 12 0V, 7 0V, 19 0V/2.5V 2 0V (SG2 : OFF) Test point Min. Limits Typ. Max. Unit
19
GL(B-Y)
Gain (B-Y) VCA:Lo
5
-4.5
-3
-2
dB
RGB IN 20 21 22 23 24 25 26 27 28 29 30
VIDEO OUT VB1 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 OUT VIDEO IN VIDEO OUT Gain SG9 : 500kHz, 0.5VP-P CW SW9 : ON 12 0V, 2 0V (SG2 : OFF) SG9 : 5MHz, 0.5VP-P CW SW9 : ON 12 0V, 2 0V (SG2 : OFF) SG9 : 3.58MHz, 286mVP-P CW SG12 : 1VP-P SG9 : burst, 286mVP-P SG12 : 1VP-P PAL MODE (SW13 : ON) 5 5V
5 5 10
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 12 5V SG16 : 0.71VP-P 12 5V
10B
243 255 -30 82 2.68 2.51 1.91 96 233 339
286 300 0 90 3.15 2.95 2.25 -40 104 241 347
329 345 30 98 3.62 3.39 2.59 -28 112 249 355
mVP-P mVP-P mVP-P deg
10B
10B
10B
10B
10B
10B
10B
dB deg deg deg
10B
10B
10B
VIDEO IN 31 GVIO
5
6
7
dB
32
FVIO
VIDEO IN VIDEO OUT frequency characteristics
10
-1.5
0
1.5
dB
SUPER IMPOSE 33 34 MMV 35 36 37 HHK BFPP BFPW HHK width BFP point (burst point) BFP width (burst width)
2 15 2 15 15
PSI VOS
RGB/VIDEO IN burst phase difference
10B
-5 -20
0 0
5 20
deg mV
DC offset
10
40 4.5 2.0
47 5.6 2.5
54 6.7 3.0
s s s
5V 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 0 ~ 0.3V
VCXO FREE RUN
13
PAL MODE 2 ~ 2.2mA
Carrier phase for MOD R is inverted on line
12
SUPER IMPOSE MODE
Hi : 2 ~ 5V Lo : 0 ~ 1V
10
VIDEO OUT RGB ENCODE signal out VIDEO IN signal out
15
12
7
TEST MODE MR TEST MODE MB TEST MODE DR TEST MODE DB
4.7 ~ 5V 4.7 ~ 5V 4.7 ~ 5V 4.7 ~ 5V
2 ~ 5V 0 ~ 1V 2 ~ 5V 0 ~ 1V
OPEN OPEN 0 ~ 0.3V 0 ~ 0.3V
5 Chroma difference output MOD R-Y out MOD B-Y out DIFF R-Y out DIFF B-Y out
5
15
PULSE output
TEST MODE P 4.7 ~ 5V
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)
MITSUBISHI ICs (AV COMMON)
M52390FP
NTSC/PAL ENCODER
TEST METHOD AND LIMITS CALCULATION METHOD
Test No. 1 2 Measure the current to flow in pin
11
Test method and limits calculation method
5V
SG2
0V
5s 64s
3 4 5
SG18 SG17 SG16
1V 2s 0V 10s 52s
E
Output at pin
15
5V
SG2
0V
5s 64s
6
SG16 SG17 SG18
0.71V 2s 0V 10s 52s
Output at pin
15
EY
SG18 SG17 SG16 7 8 9
f=500kHz / 5MHz 0V 0.5VP-P CW
Output at pin
15
V out
F = 20 log
V out (5MHz) V out (500kHz)
(dB)
MITSUBISHI ICs (AV COMMON)
M52390FP
NTSC/PAL ENCODER
TEST METHOD AND LIMITS CALCULATION METHOD (cont.)
Test No. Test method and limits calculation method
5V
SG2 10 11 Output at pin
15
5s 64s
0V
VS
0.5VP-P
SG14
0V
12
.Frequency:500kHz
Measure the element of 500kHz at pin 10 (V12) and calculate GY as follows. V12 0.5VP-P
GY = 20 log
(dB)
0.5VP-P
SG14
0V
13
.Frequency:5MHz
Measure the element of 5MHz at pin 10 (V13) and calculate fcY as follows.
fcY = 20 log
V13 V12
(dB)
5V
SG2
0V
5s 64s
SG18 (SG16) 14 (15)
1V 2s 0V 10 52s
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
SG18 (SG16)
f=500kHz 0V 0.5VP-P CW
16 (17) 18 (19)
Output at pin
V out
15
GH = 20 log
V out ( 19 5V) V out ( 19 2.5V)
(dB)
GL = 20 log
V out ( 19 5V) V out ( 19 2.5V)
(dB)
5V
SG2
0V
5s 64s
VnH 20 21 22 Output at pin
10B
V(n+1)H
VB1=VnH VB2=VnH VB3=VnH - V(n+1)H
5V
SG2
0V
5s 64s
23 Output at pin
10B
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
SG2
0V
5s 64s
24 25 26
SG18 SG17 SG16
1V 2s 0V 10s 52s 0.71VP-P
Output at pin
10B
VB
VC VC VB
R (G, B) / Burst level ratio =
5V
SG2
0V
5s 64s
27
Output at pin
10B
VB
VC
VC VC/B = 20 log VB (dB)
5V
SG2
0V
5s 64s
28 29 30
SG18 SG17 SG16
1V 2s 0V 10s 52s 0.71VP-P
Output at pin
10B
PB
PC
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
SG9
0V
0.5VP-P CW
Output at pin 31 32
10B
V out
GVIO = 20 log
V out (500kHz) 0.5VP-P V out (5MHz) V out (500kHz)
(dB)
FVIO = 20 log
(dB)
5V
SG2
0V
5s 64s
286mVP-P CW
SG9
0V 3.58MHz
33 SG12
2V 1V
2s
32s 30s
Output at RGB side Output at VIDEO IN side
Output at pin
10B
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
5V
5s 64s
SG2
0V
2V
SG12
1V
2s 30s 32s
34 SG9
0V
286mVP-P 3.58MHZ
output at pin 10
0V VVIN VOS=VRGB -VVIN (mV) VRGB
SG2
5V 2.5V 0V
5s
64s
35 output at pin 15
2.8V HHK
SG2 36 37 output at pin 15
5V 2.5V 0V
5s
64s
BFPP
BFPW
SG14 SG18 SG17
+
TEST CIRCUIT
SG16 47
+
4.7 5V 11 12 0.01 47
+
SG12
V17 4.7 15 1k SW18
+
V16 4.7 4.7 10k SW16
+
30k 10k SW17
+
10k
20
CLAMP R Sync. ADD Vreg SWV CONT CLAMP G CLAMP B 0.5VP-P
19
18
17
16
15
14
13
SW13
19
V18 0.01 1k
12
11
LPF CONT MATRIX C.Sync
VCA CONT
Y NTSC ADD (Y : 6dB) PAL LIM R BPF Y/C MIX APC SW BURST ADD R MOD R NTSC : OFF
R-Y
LPF R
VCA R
CLAMP R
SW V
C.Sync
AMP 2
HPF 2
B-Y LIM B
LPF B ADDd BPFd Y/C MIXd
VCA B
CLAMP B
BURST ADD B MOD B
AMP 1
HPF 1
C.Sync
C.Sync 1/2fh
BFP
X
1/2fh at PAL
1/2fh BFP
IDENT BFP VCXO APC CLAMP V 6dB AMP 1VP-P 2VP-P
1/2
MMV
HHK
90 SIFT
1
SW4 0.1 270p V4 5
2
3
4
5
6
SW6
7
8
9
10
91k
+
0.01
4.7
0.1
V6 7 45p
1.5k
+
SW9 10k 1 9 V9 SG9
3.58 BPF
10
10B
2
MITSUBISHI ICs (AV COMMON)
NTSC/PAL ENCODER
M52390FP
Unit Resistance : Capacitance : F
SG2
MITSUBISHI ICs (AV COMMON)
M52390FP
NTSC/PAL ENCODER
PRECAUTIONS FOR APPLICATION (1) Input signal
Pin No.
2
Name C.Sync IN 5V 0V
Specifications
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 2V Ys DL 1V VIDEO OUTPUT VIDEO OUTPUT Refer to (9) VTH=1.5V
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
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 9 (VIDEO IN) to GND and set it to free run mode. 2) V4 is the voltage at pin 4 (OFFSET R) when sync is input to pin 2 (C.Sync IN). Apply voltage V4 - 0.5V to pin 4 (OFFSET R). 3) Set pin 2 (C.Sync IN) to H. (5V is applied.) 4) Set the output frequency at pin 5 (TRAP) by adjusting the trimmer capacitor at pin 7 (VCXO IN).
(4) Setting of Y DL
The group delay characteristics of color signal of RGB encode output changes by connecting a resistor externally to pin 20 (fc 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 5 , take the delay 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 19 (COLOR CONT.). (The burst amplitude is fixed.) 3 2 (dB) 1 0 -1 -2 -3 0 1 2 3 4 5
(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 20 (fc CONT.). The group delay characteristics also change as shown in Fig. 2.
(Frequency of output at pin 5 when 100kHz is input is set to 0dB.)
RGB INAEpin 5 gain (dB)
0 -6 -12 -18 -24 -30 100k
60k 50k 40k 30k 20k 10k 5k
Output at pin 5
6
Voltage at pin 19
Fig. 3 Color control characteristics
(As for the test conditions, refer to test No.16, 17, 18 and 19.) 1M 10M
Fig. 1 Frequency 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 by connecting DR externally to pin 3 (HHK).
500 RGB INAEpin 5 delay (nsec) 400 300 200 100
External R at pin 3 (k)
130 120 110 100 90 80 70
BFPP BFPW HHK 5.6s 47s 3
270p
R
2.5s 5V 0V
pin 2 Sync
0
5 10
20
30
40
50
60 0 10 20 30 40 50 60 Time interval from sync rise at pin 2 (47sec)
Pin 20 R (k)
Fig. 2 Group delay characteristics of color difference LPF
(As for the test conditions, refer to test No.14 and 15.)
Fig. 4 RC product at pin
3
vs. internal pulse
(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
10
VIDEO OUT (Ts:Hi)
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) POWER DISSIPATION Pd (mW) 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 : 18m
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
B
COMPOSITE Sync. fc CONT.
Recommended Y DL (360ns): Toko Co., Ltd. TH317LSOS-3287
47
2.5V
+ Y DL 4.7 4.7 4.7 1k
1k(PAL ONLY)
(
)
VCC=5V 0.01 + 47 (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 0.71VP-P (at color saturation). NTSC/PAL VIDEO OUTPUT
0.01
Y OUT
30k
1k
Y IN
20
19
18
RIN
17
GIN CLAMP MATRIX
16
BIN
15
14
13
2.1V
Vreg
12
11
VCC NTSC/ PAL SUPERIMPOSE SW
FILTER CONT COLOR CONT
Sync. ADD Y
Vreg
R-Y
R-Y BURST ADD
R-Y MOD MIX BPF
Y/C MIX
B-Y
B-Y BURST ADD
B-Y MOD
APC CLAMP
6dB AMP
MMV GND R-Y CLAMP B-Y CLAMP
VCXO Xtal
VIDEO IN
VIDEO OUT
1
2
3
270p
4
5
15
6
7
0.01
8
1 1.5k
9
10
91k
0.1
12p
0.1
Unit Resistance : Capacitance : F
3fsc TRAP
GND
APC FILTER Example of Xtal:Nippon denpa industry Co., Ltd. AT-51 (NTSC = 3.579545MHz) (PAL = 4.433619MHz)
CLAMP R
CLAMP B
VCXO
MMV
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.)
RGB CHARACTER SIGNAL INPUT
(*RGB child picture signal input after processing time axis)
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
Ys DL (350ns) VTH=1.5V (Hi=R,G,B)
G
B
COMPOSITE Sync. fc CONT. 47 2.5V
1k(PAL ONLY)
Recommended Y DL (360ns): Toko Co., Ltd. TH317LSOS-3287
+
Y DL
4.7
4.7
4.7
1k 0.01 + 47 Y OUT
(
)
VCC=5V
30k
0.01
1k
Y IN
20
19
18
RIN
17
GIN CLAMP MATRIX
16
BIN
15
14
13
2.1V
Vreg
12
11
VCC NTSC/ PAL SUPERIMPOSE SW (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.
FILTER CONT COLOR CONT
Sync. ADD Y
Vreg
R-Y
R-Y BURST ADD
R-Y MOD MIX BPF
Y/C MIX
B-Y
B-Y BURST ADD
B-Y MOD
APC CLAMP
6dB AMP
MMV GND R-Y CLAMP B-Y CLAMP
VCXO Xtal
VIDEO IN
VIDEO OUT
1
2
3
270p
4
5
15
6
7
0.01
8
1.5k
9
10
91k
0.1
0.1
12p
1
NTSC/PAL VIDEO OUTPUT 4.7
GND
APC FILTER
CLAMP R
3FSC TRAP
CLAMP B
VCXO
MMV
Main picture NTSC/PAL video signal input
Example of Xtal:Nippon denpa industry Co., Ltd. AT-51 (NTSC = 3.579545MHz) (PAL = 4.433619MHz)
Unit Resistance : Capacitance : F
MITSUBISHI ICs (AV COMMON)
M52390FP
NTSC/PAL ENCODER
DESCRIPTION OF PIN
Pin No.
1
Name GND
Peripheral circuit of pins
Pin voltage
AC : Sync input
Remarks
VTH=2.5V0.3V
CLAMP R CLAMP B
100 C.SYNC
200
100
25k 5k 5k
5 VTH 0 1.5k 1.5k
200
2
C.SYNC IN
30k 25k
200
AC
3V 180 50
HHK
HHK pulse width can be adjusted by connecting RC externally.
0.5V
1k
1k
Recommended value HHK:3/4H R=91K C=270p
3
HHK
3V
R
C
DC : 3.1V
1.53k 2k 14k 4k 1k 1.53k 22k
Recommended value of external circuit C=0.1
C
4
OFFSET R
2.1V 36k
to VCAR
1.5k
1.5k
from VCAR
100
Sync
100
200
AC : Chroma
L C 6k 5k 500 2.73k 3k
2.4V
Recommended value of external circuit L C NTSC : 15 12P
PAL : 10 12P
5
TRAP
Burst : 300mVP-P
15 Test mode output when voltage at pin 15 is 5V 12 Hi : R-Y output 12 Lo : B-Y output 5 5V : Test mode setting 15 Pulse output
17p 30k 50 1mA 1p 400
MITSUBISHI ICs (AV COMMON)
M52390FP
NTSC/PAL ENCODER
DESCRIPTION OF PIN (cont.)
Pin No. Name Peripheral circuit of pins Pin voltage
DC : 3.1V
1.53k 2k 14k 4k 1.53k 22k
Remarks
Recommended value of external circuit C=0.1
C
1k
6
OFFSET B
2.1V 36k 1.5k
to VCAB
1.5k
from VCAB
100
100
Sync
200
DC : 3.2V
Free run frequency is set by the trimmer capacitor
60P 2k 300 7 0V : Carrier OFF 300
7
VCXO IN
2k 2k 2k 30k 1P 300 C1 R + C2 4k 10k 18k 200
DC : 3.3V In free run mode DC : 2.7V
characteristics
Frequency
Hi
4k
8
APC FILTER
10k
Lo
20k 22k
APC voltage
5k 300 FR HI 1.5k 1.5k 1.5k 1.5k 100 100 35 35
Recommended value of external circuit R=1.5k C1=0.001 C2=1
1.5k
1.5k
AC : VIDEO 1VP-P Pedestal section 2.9V
40k
Clamp input (burst timing) Recommended value of external circuit C=4.7
4k
9
VIDEO IN
C VIDEO 1.5k 1.5k
BFP FR Hi 1V
100 150
250
30k
9 0V : Free run mode setting
MITSUBISHI ICs (AV COMMON)
M52390FP
NTSC/PAL ENCODER
DESCRIPTION OF PIN (cont.)
Pin No. Name Peripheral circuit of pins
600
Pin voltage
AC : VIDEO 2VP-P Pedestal section 1.8V
Remarks
10
VIDEO OUT
900
11
VCC
DC : 5V
ICC : 50mA VTH=1.50.3V Hi : RGB IN output Lo : VIDEO IN output
YS 15k 30k 5k
Switching signal input for superimposing 5 VTH 0
3k
12
YS
3k
30k
40k
10k 100
Hi : picture insertion (RGB IN output)
Setting of output at pin 5 when voltage at pin 15 is 5V
12
Hi Lo
5 Output at pin
R-Y B-Y
5P
DC : 2.1V
500 8k
Recommended value of external circuit C=47
13
VRE G
9k 25k 14k 1k 25k 13
12k
PAL mode at 2mA
etc. R1 C 1.53k 1.53k OUT +
AC : Y 0.5VP-P Pedestal section 2.1V
14
Y IN
1k 2P 10k 10k 200 200
Y DL
IN R2
AC : Y 1VP-P Pedestal section 2.1V
100 5k
15
Y OUT
30k 1.5m 50
5 Test mode output when voltage at pin 5 is 5V Pulse output
12
Hi Lo
5 Output at pin
R-Y B-Y
MITSUBISHI ICs (AV COMMON)
M52390FP
NTSC/PAL ENCODER
DESCRIPTION OF PIN (cont.)
Pin No. Name Peripheral circuit of pins
+
Pin voltage
AC : B0.71VP-P Sync section : 2.9V
Remarks
Clamp input (burst timing) C=4.7
1.53k
B C
1.53k 1k
16
B IN
2.1V
BFP 200 200
200
+
1.53k
G C
AC : B0.71VP-P Sync section : 2.9V
Clamp input (burst timing) C=4.7
1.53k
17
G IN
1k
2.1V
BFP
200
200
200
+
1.53k
1.53k
R C
AC : B0.71VP-P Sync section : 2.9V
Clamp input (burst timing) C=4.7
18
R IN
1k
2.1V
BFP 200 200
200
DC : 2.5V
10k
0.01 20k 40k
Color control of RGB encode output 5V : Chroma section+2dB 2.5V : Standard 0V : Chroma section-3dB
19
COLOR CONT.
10k
2.5V
10k
50 50 50
MITSUBISHI ICs (AV COMMON)
M52390FP
NTSC/PAL ENCODER
DESCRIPTION OF PIN (cont.)
Pin No. Name Peripheral circuit of pins Pin voltage
DC : 3.3V
Remarks
fc of LPF can be adjusted by connecting a resistor externally. R=30k
20k
20k
10k
16k
20
fc. CONT.
100 10k
34k
R

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