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MITSUMI
I2C BUS Controlled 5-Input 2-Output AV Switch MM1492AF
I2C BUS Controlled 5-Input 2-Output AV Switch
Monolithic IC MM1492AF
Outline
This IC is a 5-input 2-output AV switch controlled by the I2C BUS developed for use in television. Because there are 2 outputs, it supports 2 screens and P-IN-P, and also supports an external output (monitor) pin.
Features
(1) Serial control by I2C BUS (2) 5 inputs, 2 outputs (3) 1 Y/C (S pin) inputs, 2 outputs (4) The video and audio switches can be controlled independently (5) Built-in 6dB amp for video (6) Built-in Y/C (S pin) mix circuit (7) One of the two audio outputs has a built-in -6dB ON/OFF switch (8) Slave address can be changed. 90H and 92H possible. (9) Audio muting from external pin possible (10) Maintains high impedance even when I2C BUS line (SDA, SCL) power supply is off. (11) Built-in 3 value discrimination function built-in (12) Built-in power ON reset function (13) Supports 2 screens and P-IN-P. Also supports external output (monitor) pin.
Package
SOP-44B
Applications
(1) TV (2) Other video equipment
MITSUMI
Block Diagram
I2C BUS Controlled 5-Input 2-Output AV Switch MM1492AF
MITSUMI
I2C BUS Controlled 5-Input 2-Output AV Switch MM1492AF
Pin Assignment
44 43 42 41 40 39 38 37 36 35 34 33 32 31 30 29 28 27 26 25 24 23
1 2 3 4 5 6 7 8 9 10 11 12 13 14 15 16 17 18 19 20 21 22
SOP-44B
1
V1-V
12
S2
23 VOUT2 34
YIN1
2 V1-L 13 V3-V 24 ROUT2 35 ROUT1
3 V1-Y 14 V3-L 25 COUT2 36 LOUT1
4 V1-R 15 V3-R 26 LOUT2 37 VOUT1
5 V1-C 16 STV-V 27 YOUT2 38 BIAS
6 S1 17 STV-L 28 GND 39 YOUT1
7
V2-V
18 STV-R 29
SDA
40
VCC
8
V2-L
19
YIN2
30
SCL
41 COUT1
9 V2-Y 20 ADR 31 MUTE 42 MTV-R
10 V2-R 21 CIN2 32 CIN1 43 MTV-V
11 V2-C 22 GND 33 GND 44 MTV-L
Pin Description
Pin No. Pin name
Functions
1 V1-V Video input terminal
3 V1-Y (Composite or Y)
7 V2-V *Sync chip clamp
9 V2-Y
13 V3-V
16 STV-V
19 YIN2
34 YIN1
43 MTV-V
2 V1-L Audio input terminal
4 V1-R
8 V2-L
10 V2-R
14 V3-L
15 V3-R
17 STV-L
18 STV-R
42 MTV-R
44 MTV-L
Internal equivalet circuit diagram
MITSUMI
I2C BUS Controlled 5-Input 2-Output AV Switch MM1492AF
Pin No. Pin name
Functions
5 V1-C Video input terminal
11 V2-C (Croma)
21 CIN2
32 CIN1
Internal equivalet circuit diagram
6 S1 Distinction 3-effects input terminal 12 S2 DC Detect
20 ADR Sleve address select 31 Mute Audio Mute terminal
22 GND GND 28 33 23 VOUT2 Composite video out 37 VOUT1
24 ROUT2 Audio out terminal 26 LOUT2 35 ROUT1 36 LOUT1
25 COUT2 S -Video out terminal 27 YOUT2 39 YOUT1 41 COUT1
MITSUMI
I2C BUS Controlled 5-Input 2-Output AV Switch MM1492AF
Pin No. Pin name
Functions
29 SDA Data input from I2C
Internal equivalet circuit diagram
30 SCL CLK input from I2C
38 BIAS Internal bias terminal
40 VCC VCC
Absolute Maximum Ratings (Ta=25°C)
Item Storage temperature Operating temperature Power supply voltage
Allowable loss
Symbol TSTG TOPR
VCCmax. Pd
Ratings -40~+125 -20~+75
12 1100
Recommended Operating Conditions
Item Operating temperature
Operating voltage
Symbol TOPR VOP
Ratings -20~+75 +8~+10
Units °C °C V mW
Units °C V
MITSUMI
I2C BUS Controlled 5-Input 2-Output AV Switch MM1492AF
Electrical Characteristics (Except where noted otherwise, VCC=9V, Ta=25°C)
Item Current consumption VOUT1
Voltage gain Frequency characteristics
Differential gain Differential phase Input dynamic ranges VOUT2
Voltage gain Frequency characteristics
Differential gain Differential phase Input dynamic range YOUT1
Voltage gain
Frequency characteristics
Differential gain
Symbol ICC
GV1 fV1 DGV1 DPV1 DV1
GV2 fV2 DGV2 DPV2 DV2
GY1 GY2 fY1 fY2
DGY1
Differential phase
Input dynamic range Output impedance YOUT2
Voltage gain
Frequency characteristics
Differential gain
DPY1
DY1 DY2 ZOY1
GY3 GY4 fY3 fY4
DGY2
Differential phase
Input dynamic range Output impedance COUT1
Voltage gain
Frequency characteristics Differential gain Differential phase
Input dynamic range Input impedance Output impedance
DPY2
DY3 DY4 ZOY2
GC1 GC2 fC1 fC2 DGC1 DPC1 DC1 DC2 ZIC1 ZOC1
Measurement conditions No signal
Min. Typ. Max. Units 39 55 71 mA
SIN wave : 1VP-P 100kHz SIN wave : 1VP-P 10MHz/100kHz
Staircase signal 1VP-P Staircase signal 1VP-P SIN wave : 100kHz THD=1.0%
5.5 6.0 -1.0 0.0 -3 0 -3 0 1.4 1.5
6.5 dB 1.0 dB 3% 3 deg
VP-P
SIN wave : 1VP-P 100kHz SIN wave : 1VP-P 10MHz/100kHz
Staircase signal 1VP-P Staircase signal 1VP-P SIN wave : 100kHz THD=1.0%
5.5 6.0 -1.0 0.0 -3 0 -3 0 1.4 1.5
6.5 dB 1.0 dB 3% 3 deg
VP-P
Vn-Y : SIN wave 1VP-P 100kHz YIN1 : SIN wave 2VP-P 100kHz
Vn-Y : SIN wave 1VP-P YIN1 : SIN wave 2VP-P Vn-Y : Staircase signal 1VP-P YIN1 : Staircase signal 2VP-P Vn-Y : Staircase signal 1VP-P YIN1 : Staircase signal 2VP-P Vn-Y : SIN wave 100kHz THD=1.0% YIN1 : SIN wave 100kHz THD=1.0%
5.5 6.0 6.5 dB
-0.5 0.0 0.5 dB
-1.0 0.0 1.0 dB
-1.0 0.0 1.0 dB
-3 0 3 %
-3 0 3 %
-3 0 3 deg
-3 0 3 deg
1.4 1.5
VP-P
3.2 3.8
VP-P
(50) Ω
Vn-Y : SIN wave 1VP-P 100kHz YIN2 : SIN wave 2VP-P 100kHz
Vn-Y : SIN .