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 package pin assignment 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. sop - 28b (mm1104af, mm1104bf, mm1104cf) sop-28b 13 6 10 24 58 7 12 9 11 14 13 28 24 21 27 25 23 22 20 26 15 17 16 18 19 1 1/2v cc 15 n.c 2 pre in 1 16 speed 3 nfb1 17 phase 4 preout1 18 v s 5 pre off 19 powerout2 6 power in 1 20 amp v cc 7 radiation1 21 filter 8 powerout1 22 radiation2 9 gnd 23 power in 2 10 governor v cc 24 n.c 11 n.c 25 preout2 12 pcout 26 nfb2 13 gnd 27 pre in 2 14 governor gnd 28 amp gnd august 6, 1994
mitsumi ic for headphone stereos mm1104 electrical characteristics (except where noted otherwise, ta=25 c) absolute maximum ratings item symbol ratings units operating temperature t opr - 20~+65 c storage temperature t stg - 40~+125 c power supply current v cc - 0.3~+7.5 v power consumption pd 700 (ta=25 c) mw operating voltage vop +2.0~+5.0 v item symbol measurement conditions min. typ. max. units consumption current i cc amp. only 11 18 ma preamp unit (ta=25 c) open-circuit gain gvo vo= - 10dbm f=100hz 86 db closed-circuit gain gvc vo= - 10dbm 42 db maximum output voltage vom thd=10% 0.5 0.74 vrms total harmonic distortion ratio thd vo= - 10dbm 0.06 0.5 % output noise voltage vno rg=2.2k ? , ccir waiting 240 500 ?rms crosstalk between channels ch ct vo= - 10dbm 45 60 db ripple rejection rr v cc =3v, v r = - 20dbm, f r =100hz 30 42 db output voltage with preamp off vooff vo= - 10dbm, when pre operation - 100 - 70 dbm input resistance with preamp off rioff 7 10 13 k ? output resistance with preamp off rooff 7 10 13 k ? measurement conditions: except where noted otherwise, v cc =3v, rg=2.2k ? , r l =30k ? , f=1khz power amp unit (ta=25 c) input resistance ri 14 20 26 k ? voltage gain gv po=5mw 32 34 36 db voltage gain difference between channels gv 0 2 db maximum output power i pom1 thd=10%, r l =16 ? 40 62 mw maximum output power ii pom2 thd=10%, r l =32 ? 20 34 mw total harmonic distortion ratio thd po=5mw 0.4 2 % crosstalk between channels ch ct po=5mw 45 62 db output noise voltage vn rg=1k ? , ccir waiting 150 300 ?rms ripple rejection rr v cc =3v, v r = - 20dbm, f r =100hz 40 50 db measurement conditions: except where noted otherwise, v cc =3v, rg=1k ? , r l =16 ? , f=1khz motor governor (ta=25 c) consumption current id a 2 measured 2.0 7.0 ma startup current i ms i m measured when r v =1.5 ? 500 ma reference voltage vref v5 measured with sw12 off 0.09 0.10 0.11 v reference voltage fluctuation i vref1 vs fluctuation for v cc =1.5 to 3.5v, v cc =3.0v ref. 0.1 0.5 %/v reference voltage fluctuation ii vref2 vs fluctuation for i m =25 to 200m a, i m =100ma ref. 0.005 0.05 %/ma reference voltage fluctuation iii vref3 vs fluctuation for ta= - 10 to 60 c, ta=25 c ref. 0.01 %/ c output saturation voltage vosat reference voltage v8 measured i m =200ma with sw12 on 0.2 0.3 v bridge ratio k v7/v6 measured 9 10 11
mitsumi ic for headphone stereos mm1104 block diagram (example of application circuits) characteristics 10 1.0 0.1 0.01 10 100 1k 10k output voltage (mvrms) r l =30k ? f=1khz v cc =1.8v v cc =2.0v v cc =3.0v thd-p out total harmonic distortion ratio (%) preamp 10 1.0 0.1 0.01 10 100 1k 10k output voltage (mvrms) v cc =1.8v v cc =2.0v v cc =3.0v thd-v out r l =16 ? f=1khz total harmonic distortion ratio (%) power amp item symbol measurement conditions min. typ. max. units bridge ratio fluctuation ik1 k fluctuation for v cc =1.5 to 3.5v, v cc =3.0v ref. 0.1 0.2 %/v bridge ratio fluctuation ii k2 k fluctuation for i m =25 to 200m a, i m =100ma ref. 0.05 0.2 %/ma bridge ratio fluctuation iii k3 k fluctuation for ta= - 10 to 60 c, ta=25 c ref. 0.01 %/ c measurement conditions: except where noted otherwise, v cc =3v, im=100ma, sw11=off, sw12=on
mitsumi ic for headphone stereos mm1104 3000 2500 2000 1500 1000 500 0 2468101 2141618 torque (g ?cm) v cc =3.0v v cc =1.8v v cc =2.0v motor frequency (rpm) n-t characteristic 30 20 10 40 1k 10k 100k 1m 10m frequency (hz) voltage gain-frequecy gain (db) power amp 60 50 40 30 20 10 0 0 - 10 - 20 - 30 - 40 ripple rejection rate-volume knob attenuation attenuation at vr (db) ripple rejection rate (db) pre+power amp
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