MITSUMI
NTSC/PAL Encoder MM1394
NTSC/PAL Encoder
Monolithic IC MM1394
Outline
This is an encoder IC that converts luminance signal Y, color difference signals R-Y and B-Y to composite
video signals and RGB signals.
Features
1. Operates on 5V single power supply
2. Low power consumption (265mW : video output ON)
(165mW : video output OFF)
3. Supports both NTSC and PAL formats
4. Built-in 75
drive output (RGB output, composite output)
5. BPF and DELAY filters built-in
6. Built-in oscillator for subcarrier
7. Built-in video output ON/OFF circuit
Package
SOP-24
Applications
1. Game equipment
2. Digital cameras
3. Other video equipment
MITSUMI
MITSUMI
NTSC/PAL Encoder MM1394
Pin Assignment
SOP-24
1
3
6
9
2
4 5
8
7
10
12
11
24
20
17
23
21
19 18
16
22
13
14
15
1
GND1
9
NC
17
VIDEO
OUT
ON/OFF
2
R-Y
IN
10
SYNC
IN
18
f0
3
B-Y
IN
11
NC
19
V
CC
2
4
Y+S
IN
12
V
CC
1
20
VIDEO
OUT
5
X' tal
OUT
13
Iref
21
B
OUT
6
X' tal
IN
14
Vref
22
G
OUT
7
NTSC/PAL
15
NC
23
R
OUT
8
NC
16
NC
24
GND2
Block Diagram
MITSUMI
NTSC/PAL Encoder MM1394
MITSUMI
Pin Description
Pin no.
Pin name
Function
Internal equivalent circuit diagram
2
R-Y
IN
Input pins.
3
B-Y
IN
Maximum input voltage :
4
Y+S
IN
R -Y 1.00V
P-P
B -Y 1.27V
P-P
Y+S 1.00V
P-P
(SYNC is 0.286V
P-P
)
DC level for clamp is 2.2V.
1
GND1
5
X' tal
OUT
Oscillator circuit output pin
6
X' tal in
Subcarrier input pin
Input a 0.4~1.0V
P-P
sine wave.
7
NTSC/PAL
Mode setting pin
NTSC : V
CC
PAL : PAL
MITSUMI
NTSC/PAL Encoder MM1394
MITSUMI
Pin no.
Pin name
Function
Internal equivalent circuit diagram
10
SYNC
IN
Composite sync signal
input pin
8
9
NC
OPEN
11
NC
OPEN
13
Iref
Determines internal
reference current.
Connect a 47k
resistor
between this pin and GND.
14
Vref
Internal reference voltage
pin
Reference voltage : 4V
Connect a 10F capacitor
between this pin and GND.
15
16
NC
OPEN
12
V
CC
1
MITSUMI
NTSC/PAL Encoder MM1394
Pin no.
Pin name
Function
Internal equivalent circuit diagram
17
VIDEO
OUT
Turns VIDEO output ON/OFF
ON/OFF
VIDEO output ON : GND
OFF : V
CC
18
f0
Determines f0 for filter and
delay circuits.
NTSC : 20k
PAL : 16k
20
VIDEO OUT
Composite video signal
output pin
Can drive 75
load.
21
B
OUT
22
G
OUT
RGB signal output pin
23
B
OUT
19
V
CC
2
Output stage power supply
24
GND2
Output stage GND
MITSUMI
NTSC/PAL Encoder MM1394
Absolute Maximum Ratings
(Ta=25C)
Item
Symbol
Ratings
Units
Storage temperature
T
STG
-40~+125
C
Operating temperature
T
OPR
-20~+75
C
Power supply voltage
V
CC
max.
+7
V
Allowable loss
Pd
450
mW
Recommended Operating Conditions
Electrical Characteristics
(Except where noted otherwise, Ta=25C, V
CC
=5.0V)
Item
Symbol
Ratings
Units
Operating temperature
T
OPR
-20~+75
C
Operating power supply
V
OPR
4.75~5.25
V
Measurement
Measurement conditions
Item
Symbol
pin
SW conditions
Min. Typ. Max. Units
SW (S1,S2,S3,S4,S5,S6,S7)
Consumption current 1
I
CC
1
V4 : SG6 V5 : SG8
23
33
43
mA
SW (0, 0, 0, 0, 0, 0, 0)
Consumption current 2
I
CC
2
V4 : SG6 V5 : SG8
14
20
26
mA
SW (0, 0, 0, 0, 0, 1, 0)
RGB output characteristics
R output voltage
VR
D
V1 : SG3 V2 : SG4 V3 : SG5
G output voltage
VG
C
SW (1, 0, 0, 0, 0, 0, 0)
0.64 0.71 0.78 V
P-P
B output voltage
VB
B
Rf characteristic
fR
D
V3 : SG2/SG1 V4 : SG6
Gf characteristic
fG
C
SW (1, 1, 0, 0, 1, 0, 0)
R, B frequency response Va=2.0V
-3.0
dB
Bf characteristic
fB
B
G frequency response Va=2.9V
*
1
Red-1 level ratio
CL (R1)
2.62 2.92 3.21
Red-1 phase
CP (R1)
94
104
114
deg
Red-2 level ratio
CL (R2)
2.62 2.92 3.21
Red-2 phase
CP (R2)
2.46 2.56 2.66 deg
Green-1 level ratio
CL (G1)
2.46 2.74 3.02
Green-1 phase
CP (G1)
A
231
241
251
deg
Green-2 level ratio
CL (G2)
2.46 2.74 3.02
Green-2 phase
CP (G2)
109
119
129
deg
Blue-1 level ratio
CL (B1)
1.87 2.08 2.29
Blue-1 phase
CP (B1)
337
347
357
deg
Blue-2 level ratio
CL (B2)
1.87 2.08 2.29
Blue-2 phase
CP (B2)
3
13
23
deg
NTSC / PAL
Burst position
td
V1 : SG3 V2 : SG4 V3 : SG5
0.4
0.6
0.75
S
A
V4 : SG6 V5 : SG8
Burst width
tw
SW (1, 0, 0, 0, 0, 0, 0)
*
6
2.3
2.55
3.0
S
V1, 2, 3 : no signal
Carrier leak
VL
A
V4 : SG6 V5 : SG8
30
mV
P-P
SW (1, 0, 0, 0, 0, 0, 0)
*
7
Oscillation circuit
Gain
Gain
E
V1, 2, 3 : no signal
8.5
9.5
10.5
dB
V4 : SG9 V5 : SG8
SW (1, 0, 0, 0, 0, 0, 0)
Phase
P
65
deg
MITSUMI
NTSC/PAL Encoder MM1394
Input Conditions
Symbol
Signal
SG1
sine wave 0.7V
P-P
f=200kHz
SG2
sine wave 0.7V
P-P
f=5kHz
SG3
color bar R-Y signal 1V
P-P
SG4
color bar B-Y signal 1.27V
P-P
SG5
color bar Y+S signal 1V
P-P
SG6
sine wave 0.5V
P-P
f=3.58MHz
SG7
sine wave 0.5V
P-P
f=4.43MHz
SG8
0.8V-2.0V composite sync signal
SG9
sine wave 30mV
P-P
f=4.43MHz
SG10
white signal 1161RE
SG3
0.0
-0.421
-0.079
0.500
SG4
0.0
-0.421
-0.214
0.636
SG5
0.0
0.0
-0.286
0.714
0.443
0.252
0.054
0.126
SG8
2.0
4.5
S
84
S
Note 1 :
*
1 Frequency response is calculated at 20Log (5MHz output voltage/200kHz output 5MHz).
Note 2 :
*
2 Luminance level measurement
Note 3 :
*
3 Frequency response is calculated at 20Log (5MHz output voltage/200kHz output 5MHz).
YL (W)
YL (G)
YL (R)
YL (B)
Y (S)
MITSUMI
NTSC/PAL Encoder MM1394
Note 4 :
*
4 Chroma signal measurement (NTSC mode)
Chroma level ratio is the ratio between each color signal level and burst signal level.
Each color phase is 180 from burst signal phase (given B-Y axis as 0).
Note 5 :
*
5 Chroma signal measurement (PAL mode)
Assume burst 135 side signal as color-1, and burst 225 side signal as color-2.
Phase measurement is done assuming the middle of burst-1 and burst-2 phase as 180 (given B-
Y axis as 0).
Note 6 :
*
6 Burst signal
Note 7 :
*
7 3.58MHz component level for RGB input no signal.
Note 8 :
*
8 Input dynamic range measurement
Input the signal shown below and measure video output sync level. Sync level between
0.26~0.33V is acceptable.
CL (b)
CL (r)
CL (bu)
CL (g)
CL(r)
CL(R)= --------
CL(b)
CL(g)
CL(R)= --------
CL(b)
CL(bu)
CL(R)= --------
CL(b)
CL(r)
CL(R)= --------
CL(b)
CL(g)
CL(R)= --------
CL(b)
CL(bu)
CL(R)= --------
CL(b)
CL (b)
CL (r)
CL (bu)
CL (g)
2
1
R-Y axis
B-Y axis
Burst-1
Burst-2
VIDEO
OUT
t d
t w
Burst
EVEN
ODD
52.15
S
0.829V
(1161RE)
63.56
S
-0.286V
SG10
4.88
S
MITSUMI
NTSC/PAL Encoder MM1394
Measuring Circuit
SW conditions : SW status in the circuit diagram below is SW (0,0,0,0,0,0,0).
MITSUMI
NTSC/PAL Encoder MM1394
MITSUMI
Application Circuits
NTSC mode
MITSUMI
NTSC/PAL Encoder MM1394
MITSUMI
Application Circuits
PAL mode
PDF 
ZIP