MITSUMI
I
2
C Bus - Controlled 11-Input 3-Output Audio Switch MM1631
I
2
C Bus - Controlled 11-Input 3-Output Audio Switch
Monolithic IC MM1631
Outline
This is an I
2
C bus controlled audio switch IC developed for TVs, PDP and projection TVs. It provides 11 inputs
and 3 outputs of audio singals (R/L).
Design of the input switch block can be simplified by using this IC with MM1630 (video switch IC).
Features
1. The desired input can be selected for each of the 3 independent output lines.
2. Wide dynamic range (3Vrms)
3. Serial by I
2
C bus
4. Forced mute enabled by an external pin
5. Includes a power-save function
6. I
2
C bus lines maintain high impedance during power-off.
7. No output waveform folding with 7.1Vrms input
Package
SSOP-36A
Pin Assignment
36 35 34 33 32 31 30 29 28 27 26 25 24 23 22 21 20 19
as
ed
Ph
L3
R3
L4
R4
L5
R5
L6
R6
L7
1 2 3 4 5 6 7 8 9 10 11 12 13 14 15 16 17 18
SSOP-36A
(TOP VIEW)
R7
L8
R8
L9
R9
L10
R10
L11
R11
19
20
21
22
23
24
25
26
27
BIAS
MUTE
ADR
SDA
SCL
GND
R
OUT
3
L
OUT
3
R
OUT
2
28
29
30
31
32
33
34
35
36
L
OUT
2
R
OUT
1
L
OUT
1
V
CC
V
CC
L1
R1
L2
R2
1
2
3
4
5
6
7
8
9
O
10
11
12
13
14
15
16
17
18
ut
Pr
od
uc
ts
MITSUMI
I
2
C Bus - Controlled 11-Input 3-Output Audio Switch MM1631
Block Diagram
L1 33
L2 35
0dB
L3
L4
L5
L6
L7
1
3
5
7
9
0dB
29 R
OUT
1
30 L
OUT
1
L8 11
L9 13
L10 15
L11 17
R1 34
R2 36
R3
R4
R5
R6
2
4
6
8
uc
Pr
od
O
ut
Ph
as
ed
BIAS
Logic
23
SCL
22
SDA
21
ADR
20
MUTE
V
CC
ts
0dB
28 L
OUT
2
0dB
27 R
OUT
2
0dB
26 L
OUT
3
0dB
25 R
OUT
3
31 32
24
GND
R7 10
R8 12
R9 14
R10 16
R11 18
BIAS 19
MITSUMI
I
2
C Bus - Controlled 11-Input 3-Output Audio Switch MM1631
Pin Description
Pin no.
1~18
33~36
Pin name
L1~L11
R1~R11
Functions
Line input of Audio
V
CC
Ref
28k
30k
Input
Internal equivalent circuit diagram
25~30
L
OUT
1~3
R
OUT
1~3
Line output of Audio
V
CC
21
ADR
Slave address select pin
od
SDA
Pr
23
Ph
SCL
as
ed
22
SDA
Data input of I
2
C BUS
O
ut
V
CC
CLK input of I
2
C BUS
uc
V
CC
ADR
V
CC
SCL
ts
50
Output
MITSUMI
I
2
C Bus - Controlled 11-Input 3-Output Audio Switch MM1631
Pin no.
20
Pin name
MUTE
Function
Mute select pin
Internal equivalent circuit diagram
V
CC
MUTE
19
BIAS
Connect 22µF between
this pin and CND for
stabilize internal reference
voltage
V
CC
25k
BIAS
25k
Absolute Maximum Ratings
Item
Storage temperature
Operating temperature
Supply voltage
I/0 terminal voltage
Output current
Junction temperature
Allowable loss 1
(Ta=25°C)
Recommended Operating Conditions
Item
Operating temperature
Operating voltage
Operating I/0 voltage
Symbol
T
OPR
V
CCOP
V
INOP
V
OUTOP
Ratings
-40~+85
+8.0~+10.0
0~V
CC
Units
°C
V
V
Ph
Note: 1 Board mounting power dissipation. Board size 100
as
*
Symbol
T
STG
T
OPR
V
CC
max.
V
IN
max. V
OUT
max.
I
OUT
max.
Tj max.
Pd
Pr
Ratings
-65~+150
-40~+85
-0.2~+13
-0.2~V
CC
+0.2
25
150
1.0
100
1.6mm
Units
°C
°C
V
V
mA
°C
W
*
ed
O
ut
od
31
32
24
V
CC
GND
V
CC
GND
uc
ts
MITSUMI
I
2
C Bus - Controlled 11-Input 3-Output Audio Switch MM1631
Electrical Characteristics
Item
Current consumption
Current of power-save 1
Current of power-save 2
Voltage gain
Frequency characteristic
Total harmonic distortion
Input dynamic range
Crosstalk
Rippler rejection
Output offset voltage
S/N ratio
Input impedance of input terminal
Input terminal voltage
Output terminal voltage
Audio signal input voltage
I
2
C condition
Input voltage L
Input voltage H
SDA low level output voltage
High level input current
Low level input current
Clock frequency
Data transfer wait time
SCL start hold time
SCL low level hold time
SCL high level hold time
Start condition setup time
SDA data hold time
SDA data setup time
SDA, SCL rise time
SDA, SCL fall time
Stop condition setup time
Note I
2
C condition
SDA
(Except where noted otherwise, Ta=25°C, V
CC
=9V, SW1 ON, SW2 OFF, SW3 ON)
Measurement conditions
No signal , No Load
OUT1 (or OUT2): Power-Save
OUT2 (or OUT1)&3: Active
OUT1 & 2: Power-Save
OUT3: Active
SG: 1Vrms, 1kHz
SG: 1Vrms, 50kHz
SG: 1Vrms, 1kHz
f=1kHz, THD=0.5%
SG: 1Vrms, f=1kHz,
Without power-save mode
Vr: 100mVrms, 100kHz
SW1 OFF, SW2 ON, SW3 OFF
V
OUT
(Active)-V
OUT
(Mute)
SG: 1Vrms, 1kHz, A curve
No signal , No Load
No signal , No Load
No output signal turnup
Min. Typ. Max. Units
35
46
mA
28
21
-0.5
-3
2.8
0
0.03
3.0
-90
-50
-15
37
28
0.5
mA
mA
Symbol
I
CC
0
I
CC
1
I
CC
2
G
V
FBW
THD
DR
CT
PSRR
V
OFF
S/N
Z
IN
V
IN
V
OUT
V
SG
V
IL
V
IH
V
OL
I
IH
I
IL
f
SCL
t
BUF
dB
dB
0.05
%
Vrms
-80
-40
dB
dB
Pr
od
t
SU:STA
Sr
uc
ts
0
15
mV
-100 -90
dB
47
60
73
kΩ
4.25 4.50 4.75
V
4.25 4.50 4.75
V
7.1 Vrms
0.0
2.2
0.0
-10
-10
4.7
4.0
4.7
4.0
4.7
200
250
V
V
V
µA
µA
kHz
µs
µs
µs
µs
µs
ns
ns
1000 ns
300
ns
µs
0.8
5.0
0.4
10
10
100
Ph
as
ed
t
HD;STA
t
LOW
t
HIGH
t
SU;STA
t
HD;DAT
t
SU;DAT
t
R
t
F
t
SU;STO
O
ut
SDA sink 3mA
SDA, SCL=4.5V
SDA, SCL=0.4V
4.0
t
BUF
SCL
t
R
t
F
t
HD:STA
t
LOW
P
S
t
HD:DAT
t
HIGH
t
SU:DAT
t
SU:STO
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