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MITSUMI
Q Xpander Processors MM1434
Q Xpander Processors
Monolithic IC MM1434
Outline
From ordinary stereo signal input, each of the sound sources is expanded spatially to reproduce sound with a sense of immediacy. Algorithms developed by Q Sound are faithfully implemented in an IC produced by Mitsumi.
Features
1. Sound spreading is easily modified using an external VR. 2. Few external components required through use of active filters based on Mitsumi's bipolar technology. 3. Low cost achieved through improvements from previous model (MM1354) to VA.
Package
SOP-16A (MM1434XFBE)
Applications
Sound enhancement processor.
Pin Assignment
1 2 16 15 14 13 12 11 10 9 3 4 12345678 SOP-16A 5 6 7 8 RIN VREF S/Q FC SPC QIN ROUT GND 9 10 11 12 13 14 15 16 LOUT DET QF4 QF3 QF2 QF1 LIN VCC
Block Diagram
MITSUMI
Q Xpander Processors MM1434
Pin Description
Pin No. 1 15 Pin name RIN LIN Functions Input pin R Input pin L Equivalent circuit diagram
2
VREF
DC reference voltage pin
3
S/Q
STEREO/Q Sound Switch pin
4
FC
Filter frequency control pin
5
SPC
Spread control pin
MITSUMI
Q Xpander Processors MM1434
Pin No. 6
Pin name QIN
Functions Q Sound input pin
Equivalent circuit diagram
7 9
ROUT LOUT
Output pin R Output pin L
8
GND
GND pin
10
DET
VCC off detect pin
11 12 13 14
QF4 QF3 QF2 QF1
Filter pin Qf4 Filter pin Qf3 Filter pin Qf2 Filter pin Qf1
16
VCC
Supply voltage pin
MITSUMI
Q Xpander Processors MM1434
Absolute Maximum Ratings
Item Storage temperature Operating temperature Power supply voltage Input voltage Output current Allowable loss
(Except where noted otherwise, Ta=25C) Symbol TSTG TOPR VCC max. VIN max. Io max. Pd Ratings -40~+125 -20~+75 12 0 < VIN < VCC = = 10 350 Unit C C V V mA mW
Recommended Operating Conditions
Item Operating temperature Operating voltage Q Xpander(1) Operating voltage Q Xpander(2) Operating voltage bypass Symbol TOPR Vopq1 Vopq2 Vopb Ratings -20~+75 3.8~9.0 R1=18k*1 5.0~9.0 R1=22k*1 3.0~9.0 Unit C V V V
Note 1 : When R1 is chosen 22k, the operating voltage Q Xpander becomes narrower. But the input dynamic range becomes wider. The character is illustrated in the typical performance characteristics (3).
Electrical Characteristics
Item Consumption current Voltage gain Q Xpander 1 Voltage gain Q Xpander 2 Voltage gain Q Xpander 3 Voltage gain Q Xpander 4 Voltage gain bypass 1 Voltage gain bypass 2 Input voltage (1) Input voltage (2) Input voltage (3) Input voltage (4) Total harmonic distortion Q Xpander Total harmonic distortion bypass Output noise voltage Q Xpander Output noise voltage bypass R-L channel balance
(Except where noted otherwise VCC=8V, Ta=25C, Vbyp=5V, SW1, 2 ,3 ,4 : A R1=22k) Measurement conditions Min. Typ. Max. Unit 16 22 mA 7.6 9.1 10.6 dB 4.1 5.6 7.1 dB 7.6 9.1 10.6 dB 4.1 5.6 7.1 dB 0 0 0.7 0.25 0.45 0.35 0.4 1.0 1 1 dB dB Vrms Vrms Vrms Vrms %
Symbol ICC Gqx1 Gqx2 Gqx3 Gqx4 Gby1 Gby2 VIN1 VIN2 VIN3 VIN4 THDqx
THDby Vnoqx Vnoby Cb
SG1 : 0.5Vrms, 1kHz SW3 : B TP1 SG1 : 0.5Vrms, 1kHz SW3 : B TP2 SG2 : 0.5Vrms, 1kHz SW4 : B TP2 SG2 : 0.5Vrms, 1kHz SW4 : B TP1 SG1 : 0.5Vrms, 1kHz Vbyp=0V -1 SW3 : B TP1 SG2 : 0.5Vrms, 1kHz Vbyp=0V -1 SW4 : B TP2 VCC=8V *1 SW3, 4 : B TP1, TP2 0.5 VCC=3.8V R1=18k *1 0.15 SW3, 4 : B TP1, TP2 VCC=3V R1=18k Vbyp=0V *1 0.3 SW3, 4 : B TP1, TP2 VCC=8V *2 SW3, 4 : B TP1, TP2 0.25 (a) SG1 : 0.5Vrms, 1kHz SW3 : B (b) SG2 : 0.5Vrms, 1kHz SW4 : B TP1, TP2 (a) SG1 : 0.5Vrms, 1kHz SW3 : B (b) SG2 : 0.5Vrms, 1kHz SW4 : B Vbyp=0V TP1, TP2 BW=20~20kHz, A Curve TP1, TP2 BW=20~20kHz, A Curve Vbyp=0V TP1, TP2 SG1, SG2 : 0.5Vrms, 1kHz -1.0 Vbyp=0V SW3, 4 : B TP1, TP2
0.03 75 15 0
0.3 150 60 1.0
% Vrms Vrms dB
MITSUMI
Q Xpander Processors MM1434
Item Bypass pin voltage (H) Bypass pin voltage (L) Bypass pin current (H) Bypass pin current (L) Recommended power supply off time DET terminal voltage (H) DET terminal voltage (L) VREF terminal current Input resistance Power supply ripple rejection ratio Q Xpander Power supply ripple rejection ratio bypass Crosstalk (1) Crosstalk (2)
Symbol Vbyph Vbypl Ibyph Ibypl TvOFF Vdeth Vdetl Iref RIN PSRRqx PSRRby Ct1 Ct2
Measurement conditions *3 *4 Vbyp=5V *5 TP5 Vbyp=0V *6 TP5 *7 *7 TP6 *7 TP6 SW2 : B TP3, TP4 SG3 : 50mVrms, 100Hz SW1 : B *8 TP1, TP2 SG3 : 50mVrms, 100Hz SW1 : B *8 Vbyp=0V TP1, TP2 SG1 : 0.5Vrms, 1kHz SW3 : B *9 Vbyp=0V TP1, TP2 SG2 : 0.5Vrms, 1kHz SW4 : B *10 Vbyp=0V TP1, TP2
Min. Typ. Max. Unit 2.1 V 0.7 V 350 A -10 A 0.1 1.0 S 7.5 V 0.7 V -2.2 -0.6 1 A 21 30 39 k -40 -55 -85 -85 -30 -40 -70 -70 dB dB dB dB
Note 1 : f=1kHz, It is input voltage that THD of output voltage is 1%. Then the signals that are inputted in SG1 and SG2 are in phase. The difference of phase between the left input signal and the right one is 0. Note 2 : f=1kHz, It is input voltage that THD of output voltage is 1%. The difference of phase between the left input signal and the right one is 180. Note 3 : High-Level input voltage of BYP terminal (3pin) (Q Xpander MODE) Note 4 : Low-Level input voltage of BYP terminal (3pin) (bypass MODE) Note 5 : Input current of BYP terminal (3pin) (Vbyp=5V) Note 6 : Input current of BYP terminal (3pin) (Vbyp=0v) Note 7 : The mute signal which switches off the power supply of a power amplifier that is connected with MM1434 appears in the 10 terminal. When the power supply of MM1434 is switched off, the pop noise occur. We recommend muting the pop noise. The way is that the power supply of MM1434 is switched off after the power supply of the follow power amplifier is switched off.
Tvoff
VCC=8V VCC waveform (Pin 16)
0V Vdeth DET pin waveform (Pin 10)
VdetI
Note 8 : We recommend using the regulator for the power supply which occurs the ripple. Note 9 : When the signal is input in SG1, it is the ratio of 7pin output voltage to 9pin output voltage. Note 10 : When the signal is input in SG2, it is the ratio of 9pin output voltage to 7pin output voltage.
MITSUMI
Q Xpander Processors MM1434
Measuring Circuit
Note 1 : At VCC = 3.8V or 3V, R1 = 18k At VCC = 8V, R1 = 22k Note 2 : Capacitor Tolerance 5% Note 3 : Resistor Tolerance 1%
MITSUMI
Q Xpander Processors MM1434
Application Circuit
Note 1 : Please see recommended operating conditions Note 1). Note 2 : Capacitor tolerance 5% Note 3 : Resistor tolerance 1% Note 4 : The Q Xpander effect (the spread effect) is adjusted with VR. Note 5 : We recommend using the regulator for the power supply which occurs the ripple. Note 6 : The mute signal which switches off the power supply of a power amplifier that is connected with MM1434 appears in the 10 terminal. Note 7 : When the power supply is switched on, the pop noise occur. We recommend muting the pop noise by the power amplifier that is connected with MM1434.
MITSUMI
Q Xpander Processors MM1434
Characteristics
(1) LIN-ROUT (RIN-LOUT) Frequency (Q Xpander)
LIN-ROUT (RIN-LOUT) Voitage gain-Frequency (Q Xpander)
15.0 10.0
Voltage Gain (dB)
5.0
0 -5.0
-10.0 -15.0 -20.0 -25.0 -30.0 -35.0 10.0 100.0 1.0k 10.0k 100.0k
Frequency (HZ)
(2) LIN-LOUT (RIN-ROUT) Frequency (Q Xpander)
LIN-LOUT (RIN-ROUT) Voltage gain-Frequency (Q Xpander)
14.0 12.0 10.0
Voltage Gain (dB)
8.0 6.0
4.0 2.0 0 -2.0 -4.0 -6.0 -8.0 -10.0 10.0 100.0 1.0k 10.0k 100.0k
Frequency (HZ)
(3) Input voltage amplitude-Power supply voltage (Q Xpander)
Input voltage amplitude VIN (Vrms)
0.8 0.7 0.6 0.5 0.4 0.3 0.2 0.1 0 5 10
R1=22k R1=18k
Power supply voltage VCC (V)
Note : It is input voltage that THD of output voltage is 1%. (f=1kHz)

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