MITSUMI
Q Xpander Processors MM1326, 1354, 1369
Q Xpander Processors
Monolithic IC MM1326, 1354, 1369
Outline
These ICs are analog stereo enhancement processors. They use patented Q Xpander technology to create a
stereo image with depth in three dimensions from ordinary left and right input channels.
There is no need for any special playback equipment; the enhanced audio effect can be experienced using
standard stereo audio equipment.
This IC, produced by Mitsumi, faithfully incorporates algorithms developed by Q Sound Labs, Inc., the world
leader in sound enhancement.
Features
Package
1. Sound spreading sensation can be varied at will using an external VR (MM1354, MM1369)
2. Pseudo-stereo effects can be obtained from monaural audio signals (MM1369)
3. Sound spreading sensation can also be varied with a VR for pseudo-stereo from monaural input (MM1369)
4. Q Xpander on/off and pseudo-stereo on/off switching at TTL level
5. Internal filter circuit for few external components (MM1369)
6. No need for input signal encoding or special external equipment; playback possible using ordinary stereo
equipment
7. Low-noise design:
55 Vrms with Q Xpander on (MM1326)
60 Vrms with Q Xpander on (MM1354)
SSOP-20A (MM1326AJ)
SDIP-22A (MM1326AD, MM1354AD, MM1354BD)
SSOP-24A (MM1354AJ)
SDIP-24A (MM1369AD, MM1369BD)
Applications
1. Computer sound boards
2. Active speaker systems
3. TV game equipment and other amusement devices
4. TVs, monitors, audio equipment
Line-Up
MM1326
MM1354
MM1369
Variable sound
spreading feature
Fixed
Variable
Variable
Pseudo-stereo
No
No
Yes
function
(spreading variable)
Operating power
supply voltage
4.5~10.0 (V)
4.5~12.0 (V)
8.0~10.0 (V)
MITSUMI
Q Xpander Processors MM1326, 1354, 1369
Absolute Maximum Ratings
Recommended Operating Conditions
Item
Symbol
Ratings
Units
Storage temperature
T
STG
-40~+125
C
Operating temperature
T
OPR
-20~+75
C
Power supply voltage
V
CC
max.
12
V
Input voltage
V
IN
max.
GND <
= V
IN
<
= V
CC
V
Output voltage
I
O
max.
10
mA
Allowable loss
Pd
500
mA
Item
Symbol
Ratings
Units
Operating temperature
T
OPR
-20~+75
C
Operating voltage
V
OP
4.5~10.0
V
Electrical Characteristics
Item
Measurement conditions
Min. Typ. Max. Units
Consumption current
15
20
mA
Output voltage
*
1
2
2.8
Vrms
Voltage gain Q Xpander 1
SG1: 1Vrms, 1kHz, SG2: no signal
5
6
7
dB
Voltage gain Q Xpander 2
SG1: 1Vrms, 1kHz, SG2: no signal
-1
0.5
2
dB
Voltage gain Q Xpander 3
SG1: no signal, SG2: 1Vrms, 1kHz
5
6
7
dB
Voltage gain Q Xpander 4
SG1: no signal, SG2: 1Vrms, 1kHz
-1
0.5
2
dB
Voltage gain bypass 1
SG1: 1Vrms, 1kHz, SG2: no signal
-0.5
0
0.5
dB
Voltage gain bypass 2
SG1: no signal, SG2: 1Vrms, 1kHz
-0.5
0
0.5
dB
Input resistance
21
30
39
k
Power supply voltage rejection ratio
V
CC
=9V+200mVrms, f=1kHz
44
50
dB
Total harmonic distortion ratio Q Xpander
Lch=1Vrms, Rch=no signal
Lch=no signal, Rch=1Vrms
0.3
0.7
%
Total harmonic distortion ratio bypass
Lch=1Vrms, Rch=no signal
Lch=no signal, Rch=1Vrms
0.03
0.3
%
Output noise voltage Q Xpander
L, R channels=no signal, BW=20Hz to 20kHz, A curve
55
100 Vrms
Output noise voltage bypass
L, R channels=no signal, BW=20Hz to 20kHz, A curve
15
32
Vrms
SN ratio Q Xpander
L, R channels=1Vrms, 1kHz, BW=20Hz to 20kHz, A curve
80
85
dB
SN ratio bypass
L, R channels=1Vrms, 1 kHz, BW=20Hz to 20 kHz, A curve
90
95
dB
L-R channel balance
L, R channels=1Vrms, 1kHz, Bypass=0V
-1
0
1
dB
Bypass pin voltage (H)
*
2
2.1
V
Bypass pin voltage (L)
*
3
0.7
V
Bypass pin voltage (H)
*
4
350
A
Bypass pin voltage (L)
*
5
-10
A
*
1: Output voltage amplitude at f=1 kHz such that total output harmonic distortion is 1%
*
2: Voltage at which bypass pin (pin 2) is regarded as H (Q Sound mode)
*
3: Voltage at which bypass pin (pin 2) is regarded as L (bypass mode)
*
4: When Vbyp=5 V, current flowing into bypass pin (pin 2)
*
5: When Vbyp=0 V, current flowing from bypass pin (pin 2)
[MM1326]
MITSUMI
Q Xpander Processors MM1326, 1354, 1369
Absolute Maximum Ratings
Recommended Operating Conditions
Item
Ratings
Units
Storage temperature
-40~+125
C
Operating temperature
-20~+75
C
Power supply voltage
15
V
Input voltage
GND <
= V
IN
<
= V
CC
V
Output voltage
10
mA
Allowable loss
650
mA
Item
Ratings
Units
Operating temperature
-20~+75
C
Operating voltage
4.5~12.0
V
Electrical Characteristics
Item
Measurement conditions
Min. Typ. Max. Units
Consumption current
16
21
mA
Voltage gain Q Xpander 1
SG1:1Vrms, 1kHz, SG2: no signal
3
4
5
dB
Voltage gain Q Xpander 2
SG1:1Vrms, 1kHz, SG2: no signal
-1
0.5
2
dB
Voltage gain Q Xpander 3
SG1: no signal, SG2: 1Vrms, 1kHz
3
4
5
dB
Voltage gain Q Xpander 4
SG1: no signal, SG2: 1Vrms, 1kHz
-1
0.5
2
dB
Voltage gain bypass 1
SG1:1Vrms, 1kHz, SG2: no signal
-5.6
-5.1
-4.6
dB
Voltage gain bypass 2
SG1: no signal, SG2: 1Vrms, 1kHz
-5.6
-5.1
-4.6
dB
Input resistance
21
30
39
k
Input voltage amplitude (1)
*
1
1
1.4
Vrms
Input voltage amplitude(2)
*
2
0.5
0.7
Vrms
Total harmonic distortion ratio Q Xpander
Lch=1Vrms, Rch=no signal, Lch=no signal, Rch=1Vrms
0.4
1.0
%
Total harmonic distortion ratio bypass
Lch=1Vrms, Rch=no signal, Lch=no signal, Rch=1Vrms
0.03
0.3
%
Output noise voltage Q Xpander
L, R channels=no signal, BW=20Hz to 20kHz, A curve
60
100 Vrms
Output noise voltage bypass
L, R channels=no signal, BW=20Hz to 20kHz, A curve
15
32
Vrms
L-R channel balance
L, R channels=1Vrms, 1kHz, Bypass=0V
-1
0
1
dB
Bypass pin voltage (H)
*
3
2.1
V
Bypass pin voltage (L)
*
4
0.7
V
Bypass pin voltage (H)
*
5
350
A
Bypass pin voltage (L)
*
6
-10
A
*
1: Input voltage amplitude at f=1 kHz such that total output harmonic distortion is 1%. However, signals
input to SG1 and SG2 are in phase (phase difference 0
).
*
2: Input voltage amplitude at f=1 kHz such that total output harmonic distortion is 1%. However, signals
input to SG1 and SG2 are opposite in phase (phase difference 180
).
*
3: Voltage at which bypass pin (pin 22) is regarded as H
*
4: Voltage at which bypass pin (pin 22) is regarded as L
*
5: When Vbyp=5V, current flowing into bypass pin
*
6: When Vbyp=0V, current flowing from bypass pin
[MM1354]
MITSUMI
Q Xpander Processors MM1326, 1354, 1369
Absolute Maximum Ratings
Recommended Operating Conditions
Item
Ratings
Units
Storage temperature
-40~+125
C
Operating temperature
-20~+75
C
Power supply voltage
15
V
Input voltage
GND <
= V
IN
<
= V
CC
V
Output voltage
10
mA
Allowable loss
650
mA
Item
Ratings
Units
Operating temperature
-20~+75
C
Operating voltage
8.0~10.0
V
Electrical Characteristics
Item
Measurement conditions
Min. Typ. Max. Units
Consumption current
20
26
mA
Voltage gain Q Xpander 1
SG1: 1Vrms, 1kHz, SG2: no signal
1.5
3.5
5.5
dB
Voltage gain Q Xpander 2
SG1: 1Vrms, 1kHz, SG2: no signal
-2
0
2
dB
Voltage gain Q Xpander 3
SG1: no signal, SG2: 1Vrms, 1kHz
1.5
3.5
5.5
dB
Voltage gain Q Xpander 4
SG1: no signal, SG2: 1Vrms, 1kHz
-2
0
2
dB
Voltage gain bypass 1
SG1: 1Vrms, 1kHz, SG2: no signal
-7.5
-5.5
-3.5
dB
Voltage gain bypass 2
SG1: no signal, SG2: 1Vrms, 1kHz
-7.5
-5.5
-3.5
dB
Voltage gain pseudo-stereo 1
SG: 1Vrms, 1kHz, SG2: no signal
-9.5
-7.5
-5.5
dB
Voltage gain pseudo-stereo 2
SG1: no signal, SG2: 1Vrms, 1kHz
-7.5
-5.5
-3.5
dB
Output phase (1)
SG1: 1Vrms, 1kHz, SG2: no signal
-75
-60
-45
dB
Output phase (2)
SG1: no signal, SG2: 1Vrms, 1kHz
-140 -125 -110
dB
Input resistance (1)
Vbyp1, 2=0V, f=20Hz
21
30
39
k
Input resistance (2)
Vbyp1, 2=0V, f=1kHz
8
11
14
k
Input resistance (3)
Vbyp1, 2=0V, f=20kHz
5
7
9
k
Input voltage amplitude (1)
*
1
1
1.4
Vrms
Input voltage amplitude (2)
*
2
0.5
0.7
Vrms
Total harmonic distortion ratio Q Xpander
Lch=1Vrms, Rch=no signal, Lch=no signal, Rch=1Vrms
0.4
1
%
Total harmonic distortion ratio bypass
Lch=1Vrms, Rch=no signal,
Lch=no signal, Rch=1Vrms, Vbyp=0V
0.4
0.8
%
Output noise voltage Q Xpander
L, R channels=no signal, BW=20Hz to 20kHz, A curve, Vbyp2=0V
75
150 Vrms
Output noise voltage bypass
L, R channels=no signal, BW=20Hz to 20kHz, A curve, Vbyp1,2=0V
20
40
Vrms
L-R channel balance
L, R channels=1Vrms, 1kHz, Vbyp1,2=0V
-1.5
0
1.5
dB
Bypass pin voltage (H)
*
3
2.1
V
Bypass pin voltage (L)
*
4
0.7
V
Bypass pin voltage (H)
Vbyp=5V
*
5
350
A
Bypass pin voltage (L)
Vbyp=0V
*
6
-10
A
Pin 13 offset voltage
Vbyp1=0V
*
7
-30
0
30
mV
Pin 3 offset voltage
Vbyp1=0V
*
8
-30
0
30
mV
Pin 4 offset voltage
Vbyp1=0V
*
9
-30
0
30
mV
Pin 5 offset voltage
Vbyp1=0V
*
10
-30
0
30
mV
*
1: Input voltage amplitude at f=1 kHz such that total output harmonic distortion is 1%. However, signals
input to SG1 and SG2 are in phase (phase difference 0
).
*
2: Input voltage amplitude at f=1 kHz such that total output harmonic distortion is 1%. However, signals
input to SG1 and SG2 are opposite in phase (phase difference 180
).
*
3: Voltage at which bypass pin (pin 22) is regarded as H
*
4: Voltage at which bypass pin (pin 22) is regarded as L
*
5: When Vbyp=5V, current flowing into bypass pin
*
6: When Vbyp=0V, current flowing from bypass pin
*
7: Defined as the difference in pin 13 DC output voltages on switching from normal stereo mode to pseudo-stereo mode.
*
8: Defined as the difference in pin 3 DC output voltages on switching from normal stereo mode to pseudo-stereo mode.
*
9: Defined as the difference in pin 4 DC output voltages on switching from normal stereo mode to pseudo-stereo mode.
*
10: Defined as the difference in pin 5 DC output voltages on switching from normal stereo mode to pseudo-stereo mode.
[MM1369]
MITSUMI
Q Xpander Processors MM1326, 1354, 1369
Block Diagram and Application Circuits
[MM1326]
MITSUMI
Q Xpander Processors MM1326, 1354, 1369
Block Diagram and Application Circuits
[MM1354]
MITSUMI
Q Xpander Processors MM1326, 1354, 1369
Block Diagram and Application Circuits
[MM1369]
MITSUMI
Q Xpander Processors MM1326, 1354, 1369
10.0
100.0
1.0k
Frequency (Hz)
hertz (log)
10.0k
100.0k
10.0
0
-10.0
-20.0
-30.0
-40.0
Voltage gain Gr (dB)
Characteristics
[MM1326]
L
IN
-R
OUT
(R
IN
-L
OUT
) Frequency characteristic
L
IN
-R
OUT
(R
IN
-L
OUT
) Voltage gain-Frequency
10.0
100.0
1.0k
Frequency (Hz)
hertz (log)
10.0k
100.0k
15.0
10.0
5.0
0
-5.0
-10.0
Voltage gain Gr (dB)
L
IN
-L
OUT
(R
IN
-R
OUT
) Frequency characteristic
L
IN
-L
OUT
(R
IN
-R
OUT
) Voltage gain-Frequency
10.0
100.0
1.0k
Frequency (Hz)
hertz (log)
10.0k
100.0k
10.0
0
-10.0
-20.0
-30.0
-40.0
Voltage gain Gr (dB)
[MM1354]
L
IN
-R
OUT
(R
IN
-L
OUT
) Frequency characteristic
L
IN
-R
OUT
(R
IN
-L
OUT
) Voltage gain-Frequency
10.0
100.0
1.0k
Frequency (Hz)
hertz (log)
10.0k
100.0k
15.0
10.0
5.0
0
-5.0
-10.0
Voltage gain Gr (dB)
L
IN
-L
OUT
(R
IN
-R
OUT
) Frequency characteristic
L
IN
-L
OUT
(R
IN
-R
OUT
) Voltage gain-Frequency
10.0
100.0
1.0k
Frequency (Hz)
hertz (log)
10.0k
100.0k
10.0
0
-10.0
-20.0
-30.0
-40.0
Voltage gain Gr (dB)
[MM1369]
L
IN
-R
OUT
(R
IN
-L
OUT
) Frequency characteristic
L
IN
-R
OUT
(R
IN
-L
OUT
) Voltage gain-Frequency
10.0
100.0
1.0k
Frequency (Hz)
hertz (log)
10.0k
100.0k
15.0
10.0
5.0
0
-5.0
-10.0
Voltage gain Gr (dB)
L
IN
-L
OUT
(R
IN
-R
OUT
) Frequency characteristic
L
IN
-L
OUT
(R
IN
-R
OUT
) Voltage gain-Frequency
MITSUMI
Q Xpander Processors MM1326, 1354, 1369
Speakers with
balance control
Speakers with
balance volume controls
OR
Balance
Centered
Volume
Left
Volume
RIght
3. Speaker orientations should be the same
4. Right and left channel volumes should be equal
5. Listening is best midway between the speakers
Ideal Settings for Q Sound
1. Speaker heights should be equal
2. Speaker faces should be aligned
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