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MM1250 Schematic ( PDF Datasheet ) - Mitsumi Electric

Teilenummer MM1250
Beschreibung I2C Bus Video Switch
Hersteller Mitsumi Electric
Logo Mitsumi Electric Logo 




Gesamt 9 Seiten
MM1250 Datasheet, Funktion
MITSUMI
I2C Bus Video Switch
Monolithic IC MM1250
I2C Bus Video Switch MM1250
Outline
This IC is an audio/video switch that supports an I2C bus for television.
Features
1. Utilizes serial control by I2C bus
2. 3 video input systems for 3 outputs, VOUT, YOUT and COUT
3. VOUT has built-in 6dB amp
4. VOUT has built-in output clamp circuit
5. Audio system has built-in mute function
6. 1 output port built-in
7. Operating power supply voltage range
8~13V
8. Video frequency response
10MHz
9. Slave address
92H (fixed)
Package
SDIP-24A (MM1250XD)
Applications
I2C bus televisions, etc.






MM1250 Datasheet, Funktion
MITSUMI
I2C Bus Video Switch MM1250
*2 Crosstalk YOUT
Input a 1VP-P, 4.43MHz sine wave to SG1.
Given S1=A, S5=A, S6~S10=B, Bit=111 and TP1 amplitude V03,
Combinations below : V04, then Cty is obtained as follows:
CTY=20log (V04/V03) dB
Input
Switch status
Control bit
Signal input
amplitude S1 S4 S5 S6 S7 S8 S9 S10 Bit2 Bit1 Bit0
SG1
1VP-P
A - ABBBBB0 1 1
SG6
2VP-P
BBBBBBA 0 0 1
-
- BBBBBA 1 1 1
SG5
2VP-P
- - BBBBAB - 1 1
SG2
1VP-P
- - BBABBB - 1 1
*3 Crosstalk COUT
Input a 1VP-P, 4.43MHz sine wave to SG1.
Given S1=A, S5=A, S6~S10=B, Bit=111 and TP5 amplitude V05,
Combinations below : V06, then CTC is obtained as follows:
CTC=20log (V06/V05) dB
Input
Switch status
Control bit
Signal input
amplitude S1 S4 S5 S6 S7 S8 S9 S10 Bit2 Bit1 Bit0
SG1
1VP-P
A - ABBBBB0 1 1
BBBABBBB - 0 1
SG6
2VP-P
- BBBBBA - 1 1
-
BBBBBBA - 0 1
SG5
2VP-P
BBBBBAB - 0 1
-
- BBBBAB1 1 1
SG2
1VP-P
- - BBABBB - 1 1

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