MM1268 MITSUMI | Alldatasheet
Document overview
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- PDF pages: 7
Technical content
Features
- Operates on 5V single power supply 2. Supports NTSC and PAL formats 3. Supports S (Y, C output) 4. 75Ω driver output (RGB output, Y, C output, composite video output) 5. Built-in BRF and delay circuits Package SOP-24A
Applications
- PCs 2. Game equipment 3. Other video equipment Equivalent Circuit Diagram
MITSUMI RGB Encoder MM1268 Pin Description Pin no. Pin name Function Internal equivalent circuit diagram
1 GND1
2 RIN
3 GIN
4 BIN
7 NTSC/PAL
8 BFPOUT
Maximum input voltage is 1VP-P DC level is 2V during clamp OPEN
6 SCIN Subcarrier input pin
Input a 0.4V~5VP-P sine wave Mode setting pin NTSC : VCC PAL : GND Burst flag pulse monitor pin
MITSUMI RGB Encoder MM1268
9 Yclp
12 VCC1
13 Iref
11 NC OPEN
Determines internal reference current Connect a 47kΩ resistor between this pin and ground Connects to capacitor for Y signal clamp
10 SYNCIN Composite sync signal input pin
14 Vref Internal reference voltage pin
Connect a 10µF capacitor between this pin and ground.
MITSUMI RGB Encoder MM1268
15 COUT
16 YOUT
18 f0 Determines filter and delay circuit NTSC : 20k PAL : 16k Chroma signal output pin Luminance signal output pin Able to drive 75Ω load
17 Ytrp Connects to trap for removing
subcarrier frequency component in VIDEO output luminance signal
19 VCC2 Output stage power supply
20 VIDEO OUT
Composite video signal output pin Able to drive 75Ω load
MITSUMI RGB Encoder MM1268
21 BOUT
22 GOUT
23 ROUT
Able to drive 75Ω load
24 GND2 Output stage GND
Absolute Maximum Ratings (Ta=25°C) Item Symbol Ratings Units Storage temperature TSTG -40~+125 °C Operating temperature TOPR -20~+75 °C Power supply voltage VCC max. +7 V Allowable loss Pd *1 720 mW Recommended Operating Conditions Note : *1 Loss tolerance when garaepo board is mounted. (25.0 75.0 0.8mm garaepo board) Item Symbol Ratings Units Operating temperature TOPR -20~+75 °C Operating voltage VOP 4.75~5.25 °C
MITSUMI RGB Encoder MM1268 Measurement Measurement conditions, Item Symbol circuit SW conditions Min. Typ. Max. Units (S1, S2, S3, S4, S5, S6, S7) Consumption current 1 ICC1 V4 : SG6 V5 : SG8 31 40 mA Consumption current 2 ICC2 SW conditions (0, 0, 0, 0, 0, 0, 0) 17 22 mA RGB output characteristics ROUT, GOUT, BOUT R output voltage VR F V1, 2, 3 : SG1G output voltage VG E SW conditions (1, 1, 0, 0, 1, 1, 0) 0.64 0.71 0.78 V P-P B output voltage VB D Rf characteristic fR F V1, 2, 3 : SG2/SG1Gf characteristic fG E SW conditions (1, 1, 0, 0, 1, 1, 0) -3.0 dB Bf characteristic fB D Brightness output characteristic YOUT, VIDEOOUT Sync level Y(S) 0.26 0.29 0.33 V P-P Red brightness level Y(R) V1 : SG3 V2 : SG4 V3 : SG5 0.17 0.21 0.26 V Green brightness level Y(G) B/C V4 : SG6 V5 : SG8 0.35 0.42 0.49 V Blue brightness level Y(B) SW conditions (1, 0, 0, 0, 0, 0, 0) 0.065 0.08 0.095 V White brightness level Y(W) 0.6 0.71 0.82 V fY(R) V1, 2, 3 : SG2/SG1Brightness f characteristic fY(G) B/C SW conditions (1, 1, 0, 0, 1, 1, 0) -3.0 dB fY(B) Chroma output characteristic COUT, VIDEOOUT NTSC Burst level CL(b) 0.2 0.25 0.3 V P-P Red level ratio CL(R) 2.84 3.16 3.48 Red phase CP(R) V1 : SG3 V2 : SG4 V3 : SG5 94 104 114 deg Green level ratio CL(G) A/C V4 : SG6 V5 : SG8 2.65 2.95 3.25 Green phase CP(G) SW conditions (1, 0, 0, 0, 0, 0, 0) 231 241 251 deg Blue level ratio CL(B) 2.01 2.24 2.47 Blue phase CP(B) 337 347 357 deg PAL Burst -1 level CL(b1) 0.2 0.25 0.3 V P-P Burst -1 phase CP(b1) 125 135 145 deg Burst -2 level CL(b2) 0.2 0.25 0.3 V P-P Burst -2 phase CP(b2) 215 225 235 deg Red-1 level ratio CL(R1) 2.84 3.16 3.48 Red-1 phase CP(R1) 94 104 114 deg Red-2 level ratio CL(R2) V1 : SG3 V2 : SG4 V3 : SG5 2.84 3.16 3.48 Red-2 phase CP(R2) A/C V4 : SG6 V5 : SG8 246 256 266 deg Green -1 level ratio CL(G1) SW conditions (1, 0, 0, 1, 0, 0, 1) 2.65 2.95 3.25 Green -1 phase CP(G1) 231 241 251 deg Green -2 level ratio CL(G2) 2.65 2.95 3.25 Green -2 phase CP(G2) 109 119 129 deg Blue -1 level ratio CL(B1) 2.01 2.24 2.47 Blue -1 phase CP(B1) 337 347 357 deg Blue -2 level ratio CL(B2) 2.01 2.24 2.47 Blue -2 phase CP(B2) 3 13 23 deg NTSC/PAL Burst position td A/C V1 : SG3 V2 : SG4 V3 : SG5 V4 : SG6 0.4 0.6 0.75 µS Burst width tw SW conditions (1, 0, 0, 1, 0, 0, 1) 2.5 2.75 3.2 µS Carrier lea VL A/C V1~3 : no signal, V4 : SG6 20 mVP-P SW conditions (1, 0, 0, 1, 0, 0, 1) Electrical Characteristics (Ta=25°C, V CC=1, 2=5V)
MITSUMI RGB Encoder MM1268 Input conditions Symbol Signal SG1 Sine wave, 1VP-P, f=200kHz SG2 Sine wave, 1VP-P, f=5MHz SG3 Color bar (100%) R signal SG4 Color bar (100%) G signal SG5 Color bar (100%) B signal SG6 Sine wave, 0.5VP-P, f=3.58MHz SG7 Sine wave, 0.5VP-P, f=4.43MHz SG8 0.8V-2.0V, composite, sync signal SG3 SG4 SG5 SG8 4.5µ 64µ 0.8V Measuring Circuit SW conditions : (0,0,0,0,0,0,0) for the circuit illustrated below