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| MITSUMI IC for Headphone Stereos MM1104 IC for Headphone Stereos Monolithic IC MM1104 Outline This IC was developed for use in 3 V headphone stereos. It incorporates all the basic functions of tape players. Mitsumi has previously offered the LAG665, LAG668, LAG673 and MM1006 as one-chip versions. However, this IC is the result of a through review and redesign extending to circuit details. Features 1. Configuration: Pre-and power amp, motor control 2. Adoption of shock noise prevention circuitry Through the use of a circuit which suppresses noise occurring when the power supply is turned on and off, noise output is reduced without muting. 3. Stable motor speed control circuit A bridge circuit employing power transistors provides motor speed control with minimal drift. 4. Preamp off pin is convenient for radio connections 5. Radiation pin: When radio wave-induced noise is a problem, this pin can be used to cut the frequency characteristic. Package SOP-28B (MM1104AF, MM1104BF, MM1104CF) Pin Assignment 1 2 3 4 5 28 27 26 25 24 23 22 21 20 19 18 17 16 15 6 7 1 2 3 4 5 6 7 8 9 10 11 12 13 14 SOP-28B 8 9 10 11 12 13 14 1/2VCC PreIN1 NFB1 PreOUT1 Pre Off PowerIN1 Radiation1 PowerOUT1 GND Governor VCC N.C PCOUT GND Governor GND 15 16 17 18 19 20 21 22 23 24 25 26 27 28 N.C Speed Phase VS PowerOUT2 Amp VCC Filter Radiation2 PowerIN2 N.C PreOUT2 NFB2 PreIN2 Amp GND MITSUMI IC for Headphone Stereos MM1104 Absolute Maximum Ratings Item Operating temperature Storage temperature Power supply current Power consumption Operating voltage Symbol TOPR TSTG VCC Pd Vop Ratings -20~+65 -40~+125 -0.3~+7.5 700 (Ta=25C) +2.0~+5.0 Units C C V mW V Electrical Characteristics (Except where noted otherwise, Ta=25C) Item Symbol Measurement conditions Min. Typ. Consumption current ICC Amp. only 11 Preamp unit (Ta=25C) Open-circuit gain GVo Vo=-10dBm f=100Hz 86 Closed-circuit gain GVc Vo=-10dBm 42 Maximum output voltage Vom THD=10% 0.5 0.74 Total harmonic distortion ratio THD Vo=-10dBm 0.06 Output noise voltage Vno Rg=2.2k, CCIR waiting 240 Crosstalk between channels CHCT Vo=-10dBm 45 60 Ripple rejection RR VCC=3V, VR=-20dBm, fR=100Hz 30 42 Output voltage with preamp off VoOff Vo=-10dBm, when pre operation -100 Input resistance with preamp off RiOff 7 10 Output resistance with preamp off RoOff 7 10 Measurement conditions: Except where noted otherwise, VCC=3V, Rg=2.2k, RL=30k, f=1kHz Power amp unit (Ta=25C) Input resistance Ri 14 20 Voltage gain Gv Po=5mW 32 34 Voltage gain difference between channels Gv 0 Maximum output power I Pom1 THD=10%, RL=16 40 62 Maximum output power II Pom2 THD=10%, RL=32 20 34 Total harmonic distortion ratio THD Po=5mW 0.4 Crosstalk between channels CHCT Po=5mW 45 62 Output noise voltage Vn Rg=1k, CCIR waiting 150 Ripple rejection RR VCC=3V, VR=-20dBm, fR=100Hz 40 50 Measurement conditions: Except where noted otherwise, VCC=3V, Rg=1k, RL=16, f=1kHz Motor governor (Ta=25C) Consumption current Id A2 measured 2.0 Startup current IMS IM measured when RV=1.5 500 Reference voltage Vref V5 measured with SW12 off 0.09 0.10 VS fluctuation for Reference voltage fluctuation I Vref1 0.1 VCC=1.5 to 3.5V, VCC=3.0V ref. VS fluctuation for 0.005 Reference voltage fluctuation II Vref2 IM=25 to 200m A, IM=100mA ref. VS fluctuation for Reference voltage fluctuation III Vref3 0.01 Ta=-10 to 60C, Ta=25C ref. Reference voltage V8 measured 0.2 Output saturation voltage VoSAT IM=200mA with SW12 on Bridge ratio K V7/V6 measured 9 10 Max. Units 18 mA dB dB Vrms 0.5 % 500 Vrms dB dB -70 dBm 13 k 13 k 26 36 2 2 300 k dB dB mW mW % dB Vrms dB 7.0 0.11 0.5 mA mA V %/V 0.05 %/mA %/C 0.3 11 V MITSUMI IC for Headphone Stereos MM1104 Measurement conditions Min. Typ. Max. K fluctuation for Bridge ratio fluctuation I K1 0.1 0.2 VCC=1.5 to 3.5V, VCC=3.0V ref. K fluctuation for 0.05 0.2 Bridge ratio fluctuation II K2 IM=25 to 200m A, IM=100mA ref. K fluctuation for Bridge ratio fluctuation III K3 0.01 Ta=-10 to 60C, Ta=25C ref. Measurement conditions: Except where noted otherwise, VCC=3V, IM=100mA, SW11=OFF, SW12=ON Item Symbol Units %/V %/mA %/C Block Diagram (Example of Application Circuits) Characteristics Preamp Total harmonic distortion ratio (%) Total harmonic distortion ratio (%) 10 THD-POUT VCC=1.8V VCC=2.0V VCC=3.0V 1.0 RL=30k f=1kHz 0.1 10 Power amp THD-VOUT 1.0 VCC=1.8V VCC=2.0V VCC=3.0V RL=16 f=1kHz 0.1 0.01 10 100 1k 10k 0.01 10 100 1k 10k Output voltage (mVrms) Output voltage (mVrms) MITSUMI IC for Headphone Stereos MM1104 Power amp Ripple rejection rate (dB) Voltage gain-frequecy 40 60 50 40 30 20 10 0 0 Pre+power amp Ripple rejection rate-volume knob attenuation Gain (dB) 30 20 10 -10 -20 -30 -40 1k 10k 100k 1M 10M Frequency (Hz) Attenuation at VR (dB) N-T characteristic Motor frequency (rpm) 3000 2500 2000 1500 1000 500 0 2 4 6 8 10 12 14 16 18 VCC=1.8V VCC=2.0V VCC=3.0V Torque (g * cm) |
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