MITSUBISHI SOUND PROCESSOR ICs M51598FP PREAMPLIFIER FOR OPTICAL PICKUP DESCRIPTION The M51598FP is an optical pickup preamplifier for CD players. It has a built-in I-V amplifiers that convert current signals gained by photodetectors into voltage signals and HF (high frequency) mixing, FE (focus error), and TE (tracking error) amplifiers, as well as HF signal detector and mirror detector. FEATURES HFor 3 laser system WMCapable of being driven by either single or dual power supply HBuilt-in LPF (fc = 7OkHz) for TE and FE amplifiers MEF balance control pin (pin @) MBuiltin focus error balance control pin (pin @) WeExternal components----as few as 2 chemical capacitors, 3 ceramic capacitors, 2 volume controls, and 1 resistor W@W Built-in microminiature 24-pin flat package (0.8mm lead pitch) Outline 24P20-A RECOMMENDED OPERATING CONDITIONS 0.8mm pitch 300mil SSOP (5.3mm x 10.1mm x 1.8mm) Supply voltage FANGS sree recerec etree ee ee ete ee Vee = 4,75-~5.25V Rated supply voltages srcererereseseettestsesreneesnenaees Veo = BY Rated power dissipation deve e renee as een ener eeeeneweteeentenatawene 85mW SYSTEM CONFIGURATION | M51598FP a) HF AMP. HF OK LN M FE AMP. PICUP MR CIRCUIT osP D/A | L TE AMP. PICK-UP SERVO ( 9 MITSUBISHI me G249a2b 9018795 T17 ELECTRIC 5-125MITSUBISHI SOUND PROCESSOR ICs M51598FP PREAMPLIFIER FOR OPTICAL PICKUP PIN CONFIGURATION ETtJo 24] NC F 2] 23) TE AMP OUTPUT EF BALANCE [3] 22) GND ne [4] 21) NecAive input A&I z 20] HF AMP OUTPUT B [6] 2 19] HF SIGNAL INPUT c 7] & 18] SUPPLY VOLTAGE of6] 3% fi mr output vec/2 [8] 6] MR JUMP CONTROL FS BALANCE [iO [tS] MR CAPACITANCE REFERENCE [13] [4] HF OK OUTPUT LOGIC GNO [12 [a] FE AMP OUTPUT Outline 24P20-A NC: NO CONNECTION IC INTERNAL BLOCK DIAGRAM NC TE AMP GND HFO HF HF | vec MR JUMP MRC HF OK ~~ FE ak 30 301 r A 30 8 REF +\o CO 100 25k Je a 30k zon --O (9---~)@--4 E F EF NC o 2, FS Vref LGND BAL BAL . Units Resistance : Q Internal component values are typical Capacitance : F M@@ 62498eb 00148796 ISS ma 5-126 MITSUBISHI ELECTRICMITSUBISHI SOUND PROCESSOR ICs M51598FP PREAMPLIFIER FOR OPTICAL PICKUP ABSOLUTE MAXIMUM RATINGS (Ta = 25C, unless otherwise noted) Parameter Vcc lec Circuit current VI Vo voltage Pa Power T T 10 40 O~Vec O~Vcc 540 -~20~ +75 40~ +125 ELECTRICAL CHARACTERISTICS (Ta = 25, Vcc = 5V) mM 6249426 001879? 49) Symbol {Block Parameter Test coditions Min es Max Unit lec Cireuit_current No signal - 15 33} mA GvnF HF output voltage feo Vi= 78mVP_P O09} 1.1 1.3) Vp-p fHF HF frequency POM an BEimVe-p -5 -2 - dB VoHA HF High output voltage 3.8) 4.2 = Vv VOHF HF output offset voltage Input open -120 0 | +120] mV Gvre FE output voltage hse Vi=T8mVe-P O05] 0.7 0.9 | Vp-p VHAC f HF High output voltage Ri = 10kQ 3.6 4.1 = Vv Viac HF Low output voltage Ri = 10kQ - 0.5 1.2 4 VoFE Output offset voltage Input open -50 0 +50{ mV Gvte TE output voltage va a 07] 10] 13] Ve-e VHTE i TE High output voltage Ri=10kQ 3.6 4.1 - Vv Vie TE Low output voltage RL=10kQ - 05 1.2 v VoTTE Output offset voltage Input open -100 0 | +100] mV VHOK H | HFOK High output voltage 35| 4.1 - V VioK [HFOK Low output voltge No_ signal = of o4| Vv VTHK K | Threshold voltage 0.26 | 0.37 0.48 Vv VumR MR High output voltage No signal 3.5 4.1 = v VLMR MR Low output voltage - 0 0.4 v VITHN M Envelope ratio (normal) f = 500kHz (carrier) 0.26 | 036 | 0.46 - VTHu Envelope ratio Gump) f = 500kHz (carrier) 05 06 0.7 - fat MR _ frequency f = 500kHz (carrier), AM mod=55 % 47 60 - kHz MITSUBISHI ELECTRIC 5-127MITSUBISHI SOUND PROCESSOR ICs M51598FP PREAMPLIFIER FOR OPTICAL PICKUP TEST CIRCUIT Neoke (A) Toa! J at? + 22u 30k 36k 2 3 S&S 10k 001 wl 100k 100k 210% 24] [23] [22] [21] [20 a [is] [a7] [ie] L 14] [13 MS51598FP O 1} [2 3 4 5 6 7 8 [9] ro] fit] [12 L 10k S30k S30K SH1k | 30k 30k $30k S30k | | oVvcec/2 Units Resistance : Q Capacitance : F me 6249826 0018798 7c = 5-128 MITSUBISHI ELECTRICMITSUBISHI SOUND PROCESSOR ICs M51598FP PREAMPLIFIER FOR OPTICAL PICKUP TYPICAL CHARACTERISTICS OUTPUT OFFSET VOLTAGE VS. VOLTAGE GAIN VS. SUPPLY SUPPLY VOLTAGE @ VOLTAGE = 50 2.0 + : = Vour > VS. Veet | s Gye Vi = 78mVe-p, # = 500kHz 5 Nore Vote>VS Vcc w Gvte Vi= 38.4mVe-p, f = 1kHz * oN 3 ; Gvre Vi = 78mVp-p, f = kHz S . : VonF w GviF s VoFE PS Bo = 1.0 <= S . 3 x o Guie Zz ~ Vote j 05 GvrFe So lt = < eB -50 o 40 45 50 55 60 9 40 45 50 55 60 SUPPLY VOLTAGE Vcc (V) SUPPLY VOLTAGE Vcc (V) HFOK OUTPUT VOLTAGE VS. HFOK THRESHOLD VOLTAGE > SUPPLY VOLTAGE _ ~ VS. SUPPLY VOLTAGE = 09 ; ; , = & 05-4 + A Vuok A, B,C, D INPUT Vi= %Voct0. 5V y x A, B, C, D INPUT s Viok NO SIGNAL s HFOK (VS. Vref) VOLTAGE > x % 08 LZ 6 = wW VLoK ~ w = w 9 4 2 <x eR O7 4 5 g 7 04 2 L VuoK > 3 be EK A > 5 a 06 Z bo 4 & Ww E 2 x 3 oo c r v 5 % 5 05 3 f& Oo 03 ir 40 45 50 55 60 x x 40 45 50 55 60 SUPPLY VOLTAGE Vee (V) SUPPLY VOLTAGE Vcc (V) MR HIGH/LOW OUTPUT VOLTAGE VS. 3 SUPPLY VOLTAGE ENVELOPE RATIO VS. INPUT VOLTAGE 0.03 7 $ 1.0 Vue NO SIGNAL < , Vimr Vi =1.5Ve~P 2 z S f = 500kHz > > 08 q PIN INPUT [8 & z > Ww 6 H 9 oO 06 oT VTHU < 0.02 4115 # E i 7 a NS 5 VHMA 8 0.4 . 4 k a pve = 4 7, 4 E B< E 02 a ViMR L o a oc x 0.01 3 0 = 40 45 50 55 60 = 0 O02 O04 06 08 1.0 SUPPLY VOLTAGE Vcc (V) PIN INPUT VOLTAGE \V, (Ve-p) MITSUBISHI ELECTRIC 5-129 Me b2498cb 0018799 664MITSUBISHI SOUND PROCESSOR ICs M51598FP PREAMPLIFIER FOR OPTICAL PICKUP APPLICATION EXAMPLE +5V 36k 0.001 2.244 0.068 u Voc + KE 24] 23 |22} |21 20} Jio} fist fiz] fie] fis] fia] fis M51598FP O THA aoe ee oe 330p | 330p 3.6k 10k ~Yu wYVYRYsYsYV | song 27H tye vec > v 1/2Ve0 Internal component values are typical. Units Resistance : Q Capacitance : F i | be4dseb 00146800 106 et ' 5-130 ELECTRIC