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MITSUMI
I2C Bus Video Switch MM1250
I2C Bus Video Switch
Monolithic IC MM1250
Outline
This IC is an audio/video switch that supports an I2C bus for television.
Features
1. 2. 3. 4. 5. 6. 7. 8. 9. Utilizes serial control by I2C bus 3 video input systems for 3 outputs, VOUT, YOUT and COUT VOUT has built-in 6dB amp VOUT has built-in output clamp circuit Audio system has built-in mute function 1 output port built-in Operating power supply voltage range 8~13V Video frequency response 10MHz Slave address 92H (fixed)
Package
SDIP-24A (MM1250XD)
Applications
I2C bus televisions, etc.
MITSUMI
I2C Bus Video Switch MM1250
Block Diagram
Fig. 1 Block Diagram
Absolute Maximum Ratings
Item Storage temperature Operating temperature Power supply voltage Allowable loss
(Ta=25C) Symbol TSTG TOPR VCC Pd Ratings -40~+125 -20~+75 15 1000 Units C C V mW
MITSUMI
I2C Bus Video Switch MM1250
Electrical Characteristics
Item Operating power supply voltage Consumption current VOUT output Voltage gain Frequency characteristic Differential gain Differential phase Input dynamic Output offset voltage Input impedance Output impedance YOUT output Voltage gain VCC ICC
(Except where noted otherwise, Ta=25C, VCC=8V~13V) Measurement circuit VCC TP9 TP7 TP9 TP7 TP9 TP8 TP9 TP8 TP9 TP8 TP9 Measurement conditions VCC=9V SG1 : sine wave 1VP-P, 0.1MHz SG1 : sweep signal, 1VP-P 10MHz/0.1MHz SG1 : staircase wave, 1VP-P APL=10, 50, 90% SG1 : staircase wave, 1VP-P APL=10, 50, 90% SG1 : range sine wave, 1kHz Min. Typ. Max. Units 8.0 17 5.5 -1.0 -3 -3 2.1 0 15 20 6.0 0 0 0 0 0 30 20 30 6.5 0.5 1.0 1.0 3 3 25 6.0 0 0 0 13.0 V 33 mA 6.5 1.0 3 3 dB dB % deg VP-P mV k dB dB dB dB % deg VP-P 0 15 15 6.0 6.0 0 0 0 0 0 0 30 20 22 6.5 6.5 0.5 1.0 1.0 1.0 3 3 mV k dB dB dB dB dB dB % deg VP-P 0 15 15 30 20 22 mV k
Symbol
GV1 GV2 FV1 FV2 DGV1 DGV2 DPV1 DPV2 DV1 DV2 VOFFV ZIV ZOV2 GY1 GY2 FY1
VOUT1 pin DC level difference during switching VTV, VE1, VE2 10 10 SG1 : sine wave, 1VP-P, 0.1MHz SG6 : sine wave, 2VP-P, 0.1MHz SG1 : sweep signal, 1VP-P 10MHz/0.1MHz SG6 : sweep signal, 2VP-P 10MHz/0.1MHz SG1 : staircase wave, 1VP-P APL=10, 50, 90% SG1 : staircase wave, 1VP-P APL=10, 50, 90% SG6 : sine wave, 1kHz, Comp mode SG1 : sine wave, 1kHz, TH*S mode YOUT1 pin DC level difference during switching YIN SG1 : sine wave, 1VP-P, 0.1MHz SG2 : sine wave, 1VP-P, 0.1MHz SG5 : sine wave, 2VP-P, 0.1MHz SG1 : sweep signal, 1VP-P, 10MHz/0.1MHz SG2 : sweep signal, 1VP-P, 10MHz/0.1MHz SG5 : sweep signal, 2VP-P, 10MHz/0.1MHz SG1 : staircase wave, 1VP-P APL=10, 50, 90% SG1 : staircase wave, 1VP-P APL=10, 50, 90% SG5 : sine wave, 1kHz, COMP mode SG1 : sine wave, 1kHz, TH mode SG2 : sine wave, 1kHz, S mode COUT1 pin DC level difference during switching CIN 5.5 -0.5 -1.0 -1.0 -3 -3 4.2 2.1 10 8 5.5 5.5 -0.5 -1.0 -1.0 -1.0 -3 -3 4.2 2.1 2.1 10 8
TP1 TP1 TP1 TP1 TP2 TP2 TP1 TP1 TP1
Frequency characteristic FY2 Differential gain Differential phase Input dynamic range Output offset voltage Input impedance Output impedance COUT output Voltage gain DGY DPY DY1 DY2 VOFFY ZIY ZOY GC1 GC2 GC3 FC1 FC2 FC3 DGC DPC DC1 DC2 DC3 VOFFC ZIC ZOC
Frequency characteristic Differential gain Differential phase Input dynamic range Output offset voltage Input impedance Output impedance
TP4 TP4 TP4 TP4 TP4 TP4 TP5 TP5 TP4 TP4 TP4 TP4
MITSUMI Measurement circuit TP6 TP6 TP6 TP6 TP6 TP6
I2C Bus Video Switch MM1250
Item ROUT output Voltage gain Total harmonic distortion Output noise voltage Mute noise Input dynamic range Output offset voltage Input impedance Output impedance LOUT output Voltage gain Total harmonic distortion Output noise voltage Mute noise Input dynamic range Output offset voltage Input impedance Output impedance OUT output Output voltage L Crosstalk VOUT2 YOUT COUT ROUT LOUT Pin DC voltage 1 pin voltage 2 pin voltage 3 pin voltage 4 pin voltage 5 pin voltage 6 pin voltage 7 pin voltage 8 pin voltage 9 pin voltage 10 pin voltage 11 pin voltage 12 pin voltage 13 pin voltage 14 pin voltage 15 pin voltage 16 pin voltage 17 pin voltage 18 pin voltage 19 pin voltage 20 pin voltage 21 pin voltage 22 pin voltage
Symbol GR THDR VNR VM1 DR VOFFR ZIR1 ZIR2 ZOR GL THDL VNL VM2 DL VOFFL ZIL1 ZIL2 ZOL VOL CTV CTY CTC CTR CTL Vt1 Vt2 Vt3 Vt4 Vt5 Vt6 Vt7 Vt8 Vt9 Vt10 Vt13 Vt14 Vt15 Vt16 Vt17 Vt18 Vt19 Vt20 Vt21 Vt22 Vt23 Vt24
Measurement conditions
Min. Typ. Max. Units
sine wave, 2.5VP-P, 1kHz -0.5 0 0.5 dB sine wave, 2.5VP-P, 1kHz 0.01 0.1 % band 15kHz (except during mute) 3 30 Vrms during mute 200 600 Vrms SG3 : sine wave, 1kHz, total higher 2.0 Vrms harmonic distortion rate=0.5% ROUT pin DC level difference during switching 0 15 mV RTV 22 30 38 k RE1, RE2 50 68 86 k 60 80 100 sine wave, 2.5VP-P, 1kHz sine wave, 2.5VP-P, 1kHz band 15kHz (except during mute) during mute SG3 : sine wave, 1kHz, total higher harmonic distortion rate=0.5% Lout pin DC level difference during switching LTV LE1, LE2 Bit4=0 4.43MHz 1 4.43MHz 2 4.43MHz 3 2.5VP-P, 1kHz 2.5VP-P, 1kHz -0.5 0 0.5 dB 0.01 0.1 % 3 50 Vrms 200 600 Vrms Vrms 0 22 50 60 30 68 80 15 38 86 100 0.4 mV k k V dB dB dB dB dB V V V V V V V V V V V V V V V V V V V V V V
TP3 TP3 TP3 TP3 TP3 TP3
2.0
TP10 TP7 TP1 TP4 TP6 TP3
* * *
-70 -70 -70 -80 -80 4.8 4.1 4.8 4.8 4.1 4.8 4.1 4.8 4.1 4.8 4.1 3.5 2.1 4.1 4.1 4.1 3.4 4.1 3.4 5.3 4.6 5.3 5.3 4.6 5.3 4.6 5.3 4.6 5.3 0.2 4.6 4.0 2.6 0 4.6 9 4.6 4.6 3.9 4.6 3.9
-60 -60 -60 -70 -70 5.8 5.1 5.8 5.8 5.1 5.8 5.1 5.8 5.1 5.8 0.4 5.1 4.5 3.1 5.1 5.1 5.1 4.4 5.1 4.4
VCC=9.0V, SG1~6=no signal VCC=9.0V, SG1~6=no signal VCC=9.0V, SG1~6=no signal VCC=9.0V, SG1~6=no signal VCC=9.0V, SG1~6=no signal VCC=9.0V, SG1~6=no signal VCC=9.0V, SG1~6=no signal, S4=B VCC=9.0V, SG1~6=no signal VCC=9.0V, SG1~6=no signal VCC=9.0V, SG1~6=no signal VCC=9.0V, SG1~6=no signal, BIT4=0 VCC=9.0V, SG1~6=no signal VCC=9.0V, SG1~6=no signal VCC=9.0V, SG1~6=no signal VCC=9.0V, SG1~6=no signal VCC=9.0V, SG1~6=no signal VCC=9.0V, SG1~6=no signal VCC=9.0V, SG1~6=no signal VCC=9.0V, SG1~6=no signal VCC=9.0V, SG1~6=no signal VCC=9.0V, SG1~6=no signal VCC=9.0V, SG1~6=no signal
MITSUMI
I2C Bus Video Switch MM1250
I2C Bus Recommended Operating Conditions
Item Input voltage L Input voltage H Clock frequency Data transfer wait time SCL start hold time SCL low level hold time SCL high level hold time SCL start setup time SDA data hold time SDA data setup time SCL rise time SCL fall time SCL stop setup time Symbol VIL VIH fSCL tBUF tHD : STA tLOW tHIGH tSU : STA tHD : DAT tSU : DAT tR tF tSU : STO
(Refer to diagram below) Min. Typ. Max. Units 0.7 V 2.1 5.0 V 100 kHz 4.7 S 4.0 S 4.7 S 4.0 S 4.7 S 5.0 S 250 S 1000 nS 300 nS 4.0 S
Measurement conditions I2C logic low level discrimination value I2C logic high level discrimination value
Notes : 1 Crosstalk VOUT2 Input a 1VP-P, 4.43MHz sine wave to SG1. Given S1=A, S5=A, S6~S10= B, Bit=011 and TP7 amplitude V01, Combinations below : V02, then CTV is obtained as follows: CTV=20log (V02/V01) dB
*
I2C Bus control signals
SDA tBUF SCL P S tHD:STA tLOW tHD:DAT tHIGH tSU:DAT tSU:STA Sr tSU:STO P
tR
tF
Signal input
Input amplitude S1 A 1VP-P B S4 A B C 2VP-P 2VP-P 1VP-P A B B S5 A A A B B B B B B B B
Switch status S6 B B B A A B B B B B B S7 B B B B B B B B B B A S8 B B B B B A A A B B B S9 B B B B B B B B B A B S10 B B B B B B B B A B B
Control bit Bit2 Bit1 0 1 1 1 1 0 1 1 0 Bit0 1 0 1 0 1 1 1 1 1
SG1
SG6 SG5 SG2
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 Signal input SG1 SG6 SG5 SG2 Input amplitude 1VP-P 2VP-P 2VP-P 1VP-P S1 A S4 B S5 A B B B B Switch status S6 B B B B B S7 B B B B A S8 B B B B B S9 B B B A B S10 B A A B B 0 0 1 Control bit Bit2 Bit1 1 0 1 1 1 Bit0 1 1 1 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 Signal input SG1 SG6 SG5 SG2 Input amplitude 1VP-P 2VP-P 2VP-P 1VP-P Switch status S6 S7 B B A B B B B B B B B B B A Control bit Bit2 Bit1 Bit0 0 1 1 0 1 1 1 0 1 0 1 1 1 1 1 1
S1 A B -
S4 B B B -
S5 A B B B B B B
S8 B B B B B B B
S9 B B B B A A B
S10 B B A A B B B
MITSUMI
I2C Bus Video Switch MM1250
I2C Bus
SDA MSB SCL S 1 2 3 4 5 6 7 8 ACK 1 2 ACK P LSB MSB
S:Start Condition P:Stop Condition ACK:Acknowledge
The I2C bus (Inter IC Bus) is a bus system developed by Philips. Data is transferred on two lines, SDA and SCL. Data is transferred in byte units, and MSB is first from start condition.
1. Data format Slave address 1 0 0 1 0 0 1 R/W 0 Control bits Bit7 Bit6 Bit5 Bit4 Bit3 Bit2 Bit1 Bit0 Control byte
S
A
A
P
Address byte
The first 7 bits of the address byte is the salve address, and the last bit is allocated as R/W bit. On MM1250XD, 92H is used for the slave address and 0 (write only) for the R/W bit. The A at the 9th bit is an acknowledge signal added for verification from slave.
2. Control byte format Control byte configuration on MM1250XD is allocated as shown in the table below. Each bit is set at "0" when power is turned on. Bit7 Bit6 Bit5 Bit4 Bit3 Bit2 Bit1 Bit0 : Don't Care
OUT Mute SW2 SW1 SW0 SW V, L, R control Control SW1 0 0 1 1 SW0 0 1 0 1 MODE1 TV E1 E2 TV Control results VOUT VTV VE1 VE2 VTV LOUT LTV LE1 LE2 LTV ROUT RTV RE1 RE2 RTV MODE1 TV E1 E2 TV Audio Mute control Mute 0 1 LOUT SW*L Mute ROUT SW*R Mute Out Port control OUT Pin 13 status 0 1 Low Open E2 E1 SW Y, C control Control S4 A B A B -
Control results SW2 0 0 0 0 1 1 1 1 Mode2 SW*Y Comp Comp S Comp TH TH S TH YIN YIN VE1 YIN VTV VE1 VE1 VE2 SW*C CIN CIN SCIN CIN VTV VE1 SCIN VE2
MITSUMI
I2C Bus Video Switch MM1250
Pin Description
Pin no. Pin name 1 3 LTV RTV Internal equivalent circuit diagram Pin no. Pin name 14 VOUT1 Internal equivalent circuit diagram
2 5 7 9 18 20
VTV VE1 SCIN VE2 CIN YIN 15 VIN
4 6 8 10
LE1 RE1 LE2 RE2 16 VOUT2
11
SCL
17 19 21 23
GND VCC ROUT LOUT
12
SDA
13
OUT
22 24
COUT YOUT
MITSUMI
I2C Bus Video Switch MM1250
Measuring Circuit

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