MM1454 MITSUMI | Alldatasheet
Document overview
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Technical content
Features
- Virtual rear speakers allow reproduction of 3-dimensional sound through only two speakers when a Pro Logic encoded source is input. 2. Also reproduces wide sound for a normal stereo source. 3. 2ch input - 2ch output. 4. Few external parts due to use of the active filter created using Mitsumi's bipolar technology. 5. Low noise design Q Surround ON: 15µVrms OFF: 10µVrms 6. Simple structure results in small size and low cost. SOP-16B Item Symbol Rating Unit Storage Temperature TSTG -40~+125 °C Operating Temperature TOPR -20~+75 °C Power Supply Voltage VCC max. 13 V Input Voltage VIN max. 0 <= VIN <= VCC V Output Voltage IO max. 10 mA Allowable loss Pd 350 mW Absolute Maximum Ratings (Ta=25°C)
Applications
- TV, VCR 2. Audio equipment 3. Computer monitors 4. Active speaker systems
MITSUMI Q Surround Processor MM1454 Recommended Operating Conditions Item Symbol Rating Unit Operating temperature TOPR -20~+75 °C Operating voltage VOP 4.5~12.0 V Power supply fall times *7 TVOFF 0.1~1.0 S Item Symbol Measurement Conditions Min. Typ. Max. Unit Current consumption ICC 16 22 mA Voltage gain Q Surround 1 Gqs1 SG1 : 0.75Vrms, 1kHz SW2 : B TP1 8.5 9.5 10.5 dB Voltage gain Q Surround 2 Gqs2 SG1 : 0.75Vrms, 1kHz SW2 : B TP2 4.0 5.0 6.0 dB Voltage gain Q Surround 3 Gqs3 SG2 : 0.75Vrms, 1kHz SW3 : B TP2 8.5 9.5 10.5 dB Voltage gain Q Surround 4 Gqs4 SG2 : 0.75Vrms, 1kHz SW3 : B TP1 4.0 5.0 6.0 dB Voltage gain bias 1 Gby1 SG1 : 0.75Vrms, 1kHz Vbyp=0V -10 1 d BSW2 : B TP1 Voltage gain bias 2 Gby2 SG2 : 0.75Vrms, 1kHz Vbyp=0V -10 1 d BSW3 : B TP2 Input voltage amplitude (1) VIN1V CC=9V *1 SW2, 3 : B TP1, TP2 0.75 0.9 Vrms Input voltage amplitude (2) VIN2V CC=9V *2 SW2, 3 : B TP1, TP2 0.35 0.45 Vrms Total higher harmonic THDqs (a) SG1 : 0.75Vrms, 1kHz SW2 : B 0.1 0.3 %distortion Q Surround (b) SG2 : 0.75Vrms, 1kHz SW3 : B TP1, TP2 Total higher harmonic (a) SG1 : 0.75Vrms, 1kHz SW2 : B distortion bias THDby (b) SG2 : 0.75Vrms, 1kHz SW3 : B 0.03 0.15 % Vbyp=0V TP1, TP2 Output noise voltage Q Surround Vnoqs BW=20~20kHz, A Curve TP1, TP2 15 35 µVrms Output noise voltage bias Vnoby BW=20~20kHz, A Curve 10 25 µVrmsVbyp=0V TP1, TP2 R-L channel balance Cb SG1, SG2 : 0.75Vrms, 1kHz -1.0 0 1.0 dBVbyp=0V SW2, 3 : B TP1, TP2 B/Q pin voltage (H) Vbyph *3 2.1 V B/Q pin voltage (L) Vbyp1 *4 0.7 V B/Q pin voltage (H) Ibyph *5 Vbyp=5V TP5 350 µA B/Q pin voltage (L) Ibyp1 *6 Vbyp=0V TP5 -1µ A DET pin voltage (H) Vdeth *7 TP6 8.5 V DET pin voltage (L) Vdetl *7 TP6 0.7 V Input resistance RIN TP3, TP4 21 30 39 k Ω Power supply voltage PSRRqx SG3 : 100mVrms, 100Hz SW1 : B TP1, TP2 -80 -65 dBremoval rate Q Surround Power supply voltage PSRRby SG3 : 100mVrms, 100Hz SW1 : B -85 -70 dBremoval rate bias Vbyp=0V TP1, TP2 Crosstalk (1) Ct1 SG1 : 0.75Vrms, 1kHz SW2 : B -85 -70 dB *8 Vbyp=0V TP1, TP2 Crosstalk (2) Ct2 SG2 : 0.75Vrms, 1kHz SW3 : B -85 -70 dB *9 Vbyp=0V TP1, TP2
MITSUMI Q Surround Processor MM1454 Note 1: *1 Input voltage amplitude when output total higher harmonic distortion is 1%. However, the signals input to SG1 and SG2 must be the same phase (phase difference 0 degrees). Note 2: *2 Input voltage amplitude when f = 1kHz and output total higher harmonic distortion is 1%. However, the signals input to SG1 and SG2 must be reverse phase (phase difference 180 degrees). Note 3: *3 Voltage when B/Q pin (Pin 3) is considered to be H (Q Surround mode). Note 4: *4 Voltage when B/Q pin (Pin 3) is considered to be L (by pass mode). Note 5: *5 Current that flows in to B/Q pin (Pin 3) when Vbyp = 5V. Note 6: *6 Current that flows out of B/Q pin (Pin 3) when Vbyp = 0V. Note 7: *7 The mute signal for turning off the power amp power supply is output to Pin 4. On this IC, it is recommended that the pop noise generated during power supply fall be muted by turning off the power amp connected to the final stage of MM1454 before turning off the IC power supply. Note 8: *8 Defined as the ratio between Pin 6 output signal and Pin 7 output signal when a signal is input to SG1. Note 9: *9 Defined as the ratio between Pin 7 output signal and Pin 6 output signal when a signal is input to SG2. VCC=9V Vdet 1 Vdeth VCC waveform (16PIN) DET pin waveform (4PIN) Tvoff Block Diagram
MITSUMI Q Surround Processor MM1454 Application Circuit Characteristics *1 Resistor Tolerance ±1% *2 Capacitor Tolerance ±5% *3 The mute signal which switches off the power supply of a power amplifier that is connected with MM1454 appears in the 4 terminal. (NOTE 7) *4 The pop noise which occurs in a moment of the power supply switching on is reduced by connecting the capacitor (10uF) between 2PIN and GND. But if the reduced pop noise cause trouble for your application, we recommend muting the pop noise by the power amplifier that is connected with MM1454. *5 SW1: A QSurround Mode SW2: B Bypass Mode 1. LIN-ROUT (RIN-LOUT) Frequency (Q Surround) 15.0 14.0 13.0 12.0 11.0 10.0 9.0 8.0 7.0 6.0 5.0 4.0 3.0 2.0 1.0 Frequency (Hz) Voltage gain (dB) 2. LIN-ROUT (RIN-ROUT) Frequency (Q Surround) Frequency (Hz) 10.0 8.0 6.0 4.0 2.0 -2.0 -4.0 -6.0 -8.0 -10.0 Voltage gain (dB)
MITSUMI Q Surround Processor MM1454 3. THD of output signal -Input voltage (LIN) (QSrround) Input Voltage (Vrms) 0.01 0.1 1 10 0.1
0.01 THD(%)
f=1kHz, RIN=0Vrms 4. THD of output signal - Input voltage (RIN) (QSrround) Input Voltage (Vrms) 0.01 0.1 1 10 10 f=1kHz, RIN=0Vrms 0.1
- THD of output signal -Input voltage (QSrround) f=1kHz, The signals that are inputted in LIN and RIN are out out of phase and same amplitude. Input Voltage (Vrms) 0.01 0.01 0.1 1 10 0.1 THD(%) LOUT ROUT 6. Input voltage (1) - Power supply voltage (QSrround) Power supply voltage VCC (V) 0 5 10 15 0.2 0.4 0.6 0.8 1.2 Input Voltage (1) VIN1(Vrms) 7. Input voltage (2) - Power supply voltage (QSrround) Power supply voltage VCC (V) 0 5 10 15 0.1 0.2 0.3 0.4 0.5 0.6 0.7 Input Voltage (2)VIN2 (Vrms) See Electrical Characteristics Note 1 See Electrical Characteristics Note 2