TA2002F

TA2002F TOSHIBA | Alldatasheet

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TOSHIBA BIPOLAR LINEAR INTEGRATED CIRCUIT SILICON MONOLITHIC TA2002F, TA2002FN STEREO HEADPHONE AMPLIFIER (3V USE) The TA2002F, TA2002FN are developed for play-back TA2002F stereo headphone equipments (3V use). They are built in dual auto-reverse preamplifier, dual OCL power amplifier, and a ripple filter. _ i

FEATURES

SSOP24-P-300-1.00 © OCL (Output Condenser-Less) TA2002FN @ Low noise : Vag =22uVerms (Typ.) e Excellent ripple rejection ratio : RR=62dB (Typ.) @ Voltage gain : Gy=27dB (Typ.) X ON v aque @ Built-in a power amplifier mute NN TSS @ Built-in input capacitor for reducing buzz noise " Preamplifier stage ‘SSOP24-P-300-0.65A . . Weight © Auto-reverse with F/R control switch SSOP24-P-300-1.00 : 0.32g (Typ) . SSOP24-P-300-0.65A —_—: 0.14g (Typ.) @ Input coupling condenser-less @ Low noise : Vpj =1.34Vrms (Typ.) @ Built-in a preamplifier mute @ Built-in input capacitor for reducing buzz noise Total @ Built-in a ripple filter @ Built-in a power switch @ Low quiescent current : IccQ=11.5mA (Typ.) (Vcc =3V, Ta = 25°C) © Operating supply voltage range : Vc¢ (opr) = 1.8~4.5V (Ta = 25°C) 961001EBA2 @ TOSHIBA is continually working to improve the quality and the reliability of its products, Nevertheless, semiconductor devices in general can malfunction or fail due to their inherent electrical sensitivity and vulnerability to physical stress. It is the responsibility ‘of the buyer, when utilizing TOSHIBA products, to observe standards of safety, and to avoid situations in which a malfunction or failure of a TOSHIBA product could cause loss of human life, bodily injury or damage to property. In developing your designs, please ensure that TOSHIBA products are used within specified ‘operating ranger as tot forth in the most recent products epecificatione. Alzo, ploaze keep in mind the precautions and conditions tot forth in tho TOSHIBA Semiconductor Reliability Handbook. @ The products described in this document are subject to foreign exchange and foreign trade control laws. @ The information contained herein is presented only as a guide for the applications of our products. No responsibility is assumed by TOSHIBA CORPORATION for any infringements of intellectual property or other rights of the third parties which may result from its use. No license is granted by implication or otherwise under any intellectual property or other rights of TOSHIBA CORPORATION or others. © The information contained herein is subject to change without notice 1997-07-07 1/17

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Terminal voltage : Typical terminal voltage at no signal with test circuit (Vcc =3V, Ta=25°C) TERMINAL TERMINAL TNo.| NAME | FUNCTION INTERNAL CIRCUIT VOLTAGE (V) The GND, except the power drive stage. Input of preamplitier. INa-R F/R SW an 13 OPEN: @/@PIN —G) Lone -

22 E Ky

“LW”: @/@PIN al 3s 50002 NF of preamplifier. @ 1.3 5 | PRE OUT ) Output of preamplifier. Knol 1.3 occ aS Input of power amplifier. 3: 1.3 fr foure | Output of power amplifier. 1.3 OUT hi Vaer S = oak ot TPH. 7 |RFIN Ripple filter terminal. ES O/T S Power on/off switch. Hx PW.sw. (vec : Power-on vec T; 3 20k0)) = OPEN or GND : Power off o—(8) Muting switch for power amplifier. | vec 6ena® PW MUTE (vec : Power amp. on T, Oye OPEN or GND : Power amp. off 1997-07-07 3/17

No. | NAME] FUNCTION INTERNAL CIRCUIT Forward / Reverse mode switch. @) (OPEN : Forward mode Oo to PRE “L” level : Reverse mode |e sw XX This terminal can't be connected F/R Sw with GND line directly. On ai a. In case of reverse mode, a YTS. resistor (R = 180kQ~270k) ES should be connected to GND. PW_GND__|GND for power drive sage. a Output terminal of center power + @) KAS ©) 13 | OUT¢ amplifier. : S i g 13 BASE Base bias of an external PNP RF OUT O- WE vec transistor for ripple fitter. , t v 7 1) —1)—1) Ripple filter output. ror Ripple filter circuit supplies PRE 17 | RF OUT internal circuit except power s> amplifier circuit with power source. Muting switch for preamplifier. (v7 (RF OUT) : Preamp. off > OPEN : Preamp. on 6 ® ® 3X This terminal can’t be connected LA to F7R 43 sw PRE SW with GND line directly. [N In_case that terminal is Lgl L connected with GND line, a Fs resistor (R2 10kQ) should be connected to GND. OD) g Reference voltage. e Re 24 | VREF Preamplifier and power amplifier cS 1.3 operate on this reference. 5 ® eas G4) OTs 1997-07-07 4/17

(1) PW SW It is necessary to connect an external pull-down resistor with the terminal PW SW (pin®), in case that this IC is turned on due to external noise etc. (2) PW MUTE Vec The leak current flows through the terminal of PW MUTE L Ry (pin®), in case that the terminal is connected with Vcc line 3 Cc independently, even though this IC is off-mode (the terminal of “ft 1] PW SW (pin®) is off-mode). . a - . A - Fig.1 PW MUTE circuit It is advised to connect Ry and ¢ with the terminal of PW reducing a pop MUTE, to reduce a pop sound in switchover between PW MUTE sound on/off. And it is advised to connect R2, to shorten a switchover time from PW MUTE off-mode to PW MUTE on-mode (see Fig.1). It is better that the constants are Ry=R25100kQ, CS1yuF at Vcc =3V. As for the constants, select the optimum one depending on each a set carefully. (3) F/R SW The terminal of F/R SW (pin@®) should not be applied to higher voltage than V7 (RF OUT), because the ripple filter circuit supplies the F/R SW circuit with power source. And in reverse mode, the terminal of F/R SW should be connected with GND line through R3 (180~270k), because the F/R SW circuit doesn’t operate normally. It is advised to connect an external capacitor (C341), in order to reduce a pop sound in switchover between F/R mode (see Fig.2). As for the constants, select the optimum one depending on each a set carefully. RF OUT me, Ra 1kQ, settee} w Longa YT? YTY F/R SW at fc Fig.2 Internal equivalent circuit of F/R SW and PRE SW and the external circuits reducing a pop sound in switchover 1997-07-07 5/17

In controlling the F/R SW with voltage source, it is applied as follows ; (Forward mode : 0.8V~V17 (RF OUT) Reverse mode : 0.15~0.35V (4) PRE SW The terminal of PRE SW (pin‘8) should not be applied to higher voltage than V17 (RF OUT), because ripple filter circuit supplies the PRE SW circuit with power source. And this terminal can’t be connected with GND line directly, because the PRE SW circuit doesn't operate normally. In case of preamplifier on-mode, this terminal should be opened or connected with GND line through a resister (R= 10k). It is advised to connect a external resistor (R4 = 100~330k) and capacitor (C4=1,F), in order to reduce a pop sound in switchover between PRE SW on/off mode (see Fig.2). As for the constants, select the optimum one depending on each a set carefully. In controlling the PRE SW with voltage source, it is applied as follows ; (Preamplifier on-mode_: 0.1~0.5V Preamplifier off-mode : 1.0V~V17 (RF OUT) (5) NF resistor of preamplifier The NF resistor (R=39kQ) ; see the test circuit) should be connected, to reduce a pop sound. (6) Input of power amplifier In case that the volume of power amplifier is less than 10k, it can be connected with power amplifier directly as Fig.3-1. In case more than 10kQ, it is necessary to insert the coupling capacitor between volume and PW IN terminal as Fig.3-2. In case that DC current or DC voltage is applied to the terminal of PW IN, the internal circuit has unbalance and the power amplifier doesn’t operate normally. VREF (5) PRE OUTa VREF TT (5) PRE OUTA (6) Pw ing ©) PW ing Fig.3-1 Volume connection (1) Fig.3-2 Volume connection (2) (RS 10kQ) (R>10kQ) 8997-07-07 6/17

(7) Increase of ripple filter current - ee - - Ve x RF OUT capacity is about 10mA. 4 H — im ‘ Then this IC can be increased the current capacity of the Torn | ag fo22ye ripple filter with an external transistor Qx (exp. 2SA1362). 3 Monolithic ceramic condenser In this case, as the current gain is up, it is necessary to > 4) <) connect external parts for phase-compensation (see Fig.4). Vec BASE RF OUT And it is necessary to stabilize the ripple filter circuit Fig.4_ Increase of ripple filter current carefully, because the ripple filter circuit supplies internal circuit except power amplifier circuit with power source. (8) Pattern layout (a) The GND line of pin® (PRE GND) should be isolated from that of pin® (PW GND) at the GND point, where the Vcc decoupling condenser is placed. (b) The GND line of capacitor (for ripple filter) should be isolated from that of compensation capacitor, at the point of pin® (PW GND). (c) The pattern diagram between the pin®@ (Vref) and capacitor should be made shortly. As for pin® (PRE GND), it’s as well. (d) The pattern diagram between the pin@ (PW GND) and compensation capacitor, should be shortly. And this positive line of compensation capacitor should be kept away from the terminals of PW IN, pin®, @. (e) The lines of PW IN should be kept away from those of PW OUT. And each of the PW OUT lines should be kept away. 3X See the example of pattern layout as shown next page. (9) Oscillation precaution Small temperature coefficient and excellent frequency characteristic is needed by capacitors below. © Oscillation preventing capacitors for power amplifier output. @ Bypass capacitor for ripple filter © Capacitor between Vcc and GND @ Capacitor between Veer and GND 1997-07-07 7/17

AN EXAMPLE OF PATTERN LAYOUT NAR INaF INg-F INB-R o* 6 6 6 1000p F: 1 so00pF 1000pF ea + —@) 22yF A700 22K @ @ 22 4700, o | & [ro EIEIERC) OZ te Beers Sane 10K Pp © @ tyr} 0k © © 100kQ. ° <2: ©) or 47HF a= ‘O RF OUT s~—® Oegne “ ne gl OOK Si ts S = é 25A1362-Y a Ee | of * 220k2, ®) @® tak ®, ® S a7 uF mate rt 3% Monolithic ceramic condenser ev RS vee RL RL fe) 162 ) 01620 0 OUTA GND OUT¢ OUTg Vcc MAXIMUM RATINGS (Ta = 25°C) CHARACTERISTIC SYMBOL RATING UNIT Supply Votage [vec [6 |v] [Power | loipeak) | 60 Ourpos carert [Ripple Fifer [iar [30 | ™ Power TA2002F [| 400 | Po ote} Sop —| | Operating Temperature -25~75 °C (Note) Derated above Ta=25°C in the proportion of 3.2mW/°C for TA2002F, and of 4mW/°C for TA2002FN. 1997-07-07 8/17

ELECTRICAL CHARACTERISTICS

Unless otherwise specified : Vcc =3V, f= 1kHz, Ta=25°C, SW : a, SW2 : a, SW3 : OPEN, SWg : ON Preamplifier stage : Roe 2.2kQ, RL =10kQ, SW2 : OPEN, SWq : ON/OPEN, SWs : a/b, SWeg: a Power amplifier stage : Rg = 6000, Ri = 160, SW3 : ON, SW7 : a SYM- TEST CHARACTERISTIC BOL CIR- TEST CONDITION TYP. | MAX. | UNIT CUIT \\ Power off, SW, : b, SW2 : b - cca sw3 : ON HA Quiescent Current Fccoa| ~ [Power amo. of sw cb f= {sta na | liccos| —|Vin=O TE 5 | 165 | Voltage Gain ley | |v --azaav [25 27 23] ® aa [= | of 15] a & [Total Harmonic Distortion Po=imw ———SSSCid ‘| 02 | |

2 Output Noise Voltage Rg = 6000, SW7 : b [| — | 22] 40 [uVrms|

2 Ripple Rejection Ratio fers_| fry 1008 Wr ~22dBV | as] oe] — |

3 Cross Talk (CH-A/CH-B) Vo = - 12dBV | 35 | 42| — |

Power Muting . Open Loop Voltage Gain [Gyo _| Vo = - 12dBV, SWe : b | 7o]| so] — | Closed Loop Voltage Gain Vo = - 12dBV | — | 35| — | & [Maximum Output Voltage THD =1% [ 600 | 850 | — |mVrms| a [Vo=-i2dav | — oon on] % | Gy : : Rg =2.2kQ, BPF = 20Hz~20kHz = | Equivalent Input Noise Vai SWs :¢ 13 2.8 |1Vems = i : . s

5 Voltage NAB (Gy =35dB, f= 1kHz)

© | Cross Talk Vo = -12dBV Pre Muting Attenuation Vo = - 12dBV, SW3 : OPENDON| — | 80] — | Ripple Filter Output Voltage [cc=2V,ige=oma | 476 | 48[ — |v ; ; Vcc =2V, IpF=10mA Ripple Rejection Ratio Of § 00H RF = ~22dBV 45 53 Ripple Filter Output sWe OPEN Power-On = 20. Switch Power Off Mute Off a s weary [tee Io | Pecstouomsse | 5] —[- [oe Mute Switch | Mute On 1997-07-07 9/17

@ © 1k "0 gy 8 SW5p "0 tur [st] fells i 22] | Sls STs of [2 ST fs aye La ~~ - é | @) Nar Nar @3) zon @) iar Nar QD Btu SWea oa) ne aSWeb 1a ©) Fao) Fa Nta Dat? 5 ye PRE OUT Ot sic S StroPne our Fa TELS CE) wae out, pre OUTs Qd—+—4— Fs SWya (a) 1k tut — (a), SWrb Pw Ny PW IN Rq=6000 G) pO) © « a © 6) Rg= 6000 Sarat g 8 —a8t—© prin pre sw QS) z (@) \\sw3 a. SW ? e—(8) pw sw RF ouT (> © RF OUT vec Sat oy —® Pw MUTE aase GO) ws ts o—w-{(id) F/R SW vec +O) © vec 220k2 f= 100Hz “eS RS 4) outa, outs @ ~ at PW GND OUTC + | & oS = & Ie %X Monolithic ceramic condenser 1997-07-07 10/17

Unless otherwise specified : Vcc =3V, f= 1kHz, Ta=25°C power amplifier stage : Rg = 6002, RL = 160 preamplifier stage : Rg=2.2kQ, Ry = 10k Iccq - Vec Vo - Vcc Z fp et 5 it} } eit e Ll toee | | | ¢ He +-HH ¥ ow EERE | EEE i gs [i Yi tt tt ty P EEEEEEEE ES? EEE EE os 2 3 4 5 ° 2 3 4 5 SUPPLY VOLTAGE Vcc (V) SUPPLY VOLTAGE Vcc (V) d ee ae | eT Dobe=Cl) § Cee i 40f . oO a a | 5 || Yo Ry =320 --| | a ae A Phooepo)|Ot Le

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2 : ||) SESS ee a § Dew TTI Cl 2 3 4 5 02 o5 1 2 5 10 20 50 100 SUPPLY VOLTAGE Vcc (V) OUTPUT POWER Po (mW) Pw Gy -f Pw cm -f feesever HIME TE a ee To a a CTE ETE 5 a A > LUM Ti ¢ LM I TT eo IT TTI TEI eof LUI TTI

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= CONTE TTT TTI 8 LUM TUM TUM LEAT TATE TET] ot UUM TI TT J 20 50 100 200 500 1k 2k 5k 10k 20k 20 50 100 200 500 1k 2k Sk 10k 20k FREQUENCY f (Hz) FREQUENCY f (Hz) 1997-07-07 11/17

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0 2 3 4 5 So 50 100 200 500 1k 2k Sk 10k 20k SUPPLY VOLTAGE Vcc (V) FREQIENCY f (Hz)

20 PW Vo - Vin 100 PRE Gvo, Gvc - f

[tne || | $8 [vom -voey TTT TTI . vec=45V : pve ss COI ATE = Zvec=3V so th ’ x 3 OM INI Ss HA ee § OI SJtbPiAt tT TT) § se TIN zy 58 MTT TIEN P LIA TET) Oo ING i ge 5 | 8g LINITSN ee i S= 40) — eA 1 tt TTT | ge “nS CoO Cli titi tf ee LITT TET FT -60 -40 -20 0 20 ry 50 100 200 500 1k 2k Sk 10k 20k INPUT VOLTAGE Vin (dBV) FREQIENCY f (Hz) PRE Vom - Vec PRE THD2 - Vo Bop ome LP TT yy = COM TTT g PEELE a > a 2 od 7 ja 2 of LU TT Ti 8 i COPE 7 acdneneeee ee —— 3 od E005) FHSS 008 of — PCeooccor]) i TESS

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0 2 3 4 5 0.01 0 100-200 500 1000 SUPPLY VOLTAGE Vcc (V) OUTPUT VOLTAGE Vo (mVrms) 1997-07-07 12/17

ee tone TTT ITE wom TT | TT [| TM gee eM IE TT bg = 0 ze Titi tity tl BIE IE TT TTvonee 4 ag UTM TN aera] by eOcomcooe LEE EET eS = . TT TA I i 4 a ” "CATIIE CATIT CAT 1 ~ LEETTT ETT] 20 50 100 200 500 1k 2k Sk 10k 20k 0” 2 3 4 5 FREQIENCY f (Hz) SUPPLY VOLTAGE Vcc (V) RF VRE - IRF Iccq - Ta ae ee dt tT > 'TTTTTTPHL ¢ “EEE Pan ¢g «tt ttt ty yyy a 2 EOE : PLT i (ee @ {ft ttelet 2 EL ETT TTT iT tt | Zz go 5] 4 @ -LTTTTITTee Pel Ti iit tt CELE Eee | ° 5 10 15, 20 e -20 0 20 40 60 80 RIPPLE FILTER OUTPUT CURRENT Ipp (mA). AMBIENT TEMPERATURE Ta (°C) Vo - Ta Pw Po - Ta [TT TTT TT] [wo-om [ TTT TTT TI 2 80} s TT Teel [| se LLELITTTIT TT es fii} TT Trey ee » B= se g SS eT Se eo 3 | | : a | |

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e tT TT TTT Ty | e Jee iy | -EeS 5 05} 3 20 3 “EEE TTT PEE ° -20 0 20 40 60 80 ° -20 0 20 40 60 80 AMBIENT TEMPERATURE Ta (°C) AMBIENT TEMPERATURE Ta (°C) 1997-07-07 13/17

Pw Gy, THD1 - Ta PRE Vom, THD2 - Ta a5 a 5 [TTT TTT TTT, & 2 TT TTT 4... @ CECCEEE ECE? s & Peer s score, 8 sooo, E re ee ft ine bos 5 ee wot eet] Pe TI E z = a 5 ge Li itty tT tii tt, & ¢ “epi yeti y tT ry & gs ofttt tir rT Pry yr : ¢ BP PT a x ag 6 E700 Sa ro 3

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PPT yt fe PPP 2 2b wt PP ET 3 15) — < S 600) < a < = Eerrr TTT T Tt. & ¢ LLETT TTT tty & AMBIENT TEMPERATURE Ta (°C) AMBIENT TEMPERATURE Ta (°C) PRE Gvo, Gvc - Ta RR - Ta as ° [--vw TT TTT TT] ~ [wom LETT Tt tI sy J TTT TE TT So fvcmem | TT |

2 LL |] | TTT e TTT TTT TTT TT

ge tt Pitty 2 Jt TTT Tr tty ty oe od Zz ad # COCCCCeCeeee » LOO & Jt tt ttt tt ty ee 38 a | roy lope oF 3: tet ttt & Pet AMBIENT TEMPERATURE Ta (°C) AMBIENT TEMPERATURE Ta (°C) cT - Ta [vermve TT TT] TT] 40) a Ltt} rr 7 ae LT wt || ty gd

6 LT ETT TT TT yy

BLL [rreecnracn rwormew || TTT TTT TT TT 80 -20 oO 20 40 60 80 AMBIENT TEMPERATURE Ta (°C) 1997-07-07 14/17

we) ‘ey Sy rah | PoP 1000pH 1000pF| a 1000pF |1000pF 10) @ PRE GND VREF @ @) Nee 22uF op 4 o a ee — 2 vas Penn | ES © Ws a 2g 83 G8 hon FB & 6 Sy 233 Var PRE OUTA PRE OUTg. lar 10k, eee ore @ oa © ae our Vee oN PW SW sw RIPPLE 3 as 7 ON 5 10K (3) FILTER GQ FLK 2501362-¥ 8 “re ce ss ine O (5) are vec R 220ki1 at i) @) Aur OUTa OUTa PW GND oute rs [rity & oh ais Es oFs =

3 Monolithic ceramic condenser

SSOP24-P-300-1.00 Unit : mm 24 13 HHARRAAAAAAG J x x) al] = | 2 &é os] 2 nis wo ~~ ~~ HE AAAHAHHAHE 5 1 12 1.0TYP 0.440.1 fel0.2@0) 13.5MAX 13.0+0.2 o 8 G8 J a, a = = nN o cag 0.525+0.2 Weight : 0.32g (Typ.) 1997-07-07 16/17

SSOP24-P-300-0.65A Unit : mm 24 13 DHAAHORRRARY PLEO, ay} 9 a) SF e| © wl oN BOOHER AAAHHG HOOOMHOBOoOO 1 i 12 0.325T YP 0.22+0.1 + 8.3MAX 7.840.2 Nx Q gS = Sarid = = <8 2 a 0.45+0.2 o Weight : 0.14g (Typ.) 1997-07-07 17/17