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ta2002f / fn 2002-10-30 1 toshiba bipolar linear integrated circuit silicon monolithic ta2002f,ta2002fn stereo headphone amplifier (3v use) the ta2002f, ta2002fn are developed for play ? back stereo headphone equipments (3v use). they are built in dual auto ? reverse preamplifier, dual ocl power amplifier, and a ripple filter. features power amplifier stage power amplifier stage power amplifier stage power amplifier stage ocl (output condenser ? less) low noise: v no = 22v rms (typ.) excellent ripple rejection ratio: rr = 62db (typ.) voltage gain: g v = 27db (typ.) built ? in a power amplifier mute built ? in input capacitor for reducing buzz noise preamplifier stage preamplifier stage preamplifier stage preamplifier stage auto ? reverse with f / r control switch input coupling condenser ? less low noise: v ni = 1 .3v rms (typ.) built ? in a preamplifier mute built ? in input capacitor for reducing buzz noise total total total total built ? in a ripple filter built ? in a power switch low quiescent current : i ccq = 11 .5ma (typ.) (v cc = 3v, ta = 25c) operating supply voltage range: v cc (opr) = 1 .8~4.5v (ta = 25c) weight ssop24 ? p ? 300 ? 1.00 : 0.32 g (typ.) ssop24 ? p ? 300 ? 0.65a : 0.14 g (typ.)
ta2002f / fn 2002-10-30 2 block dirgram ripple filter ? + v ref pre sw on in a ? r in b ? r 22 sw pw sw f r pw v cc off on off on mute sw pre out a nf a + ? pw gnd out c pw c pw in b out b r l r l out a pw in a pw b pw a pre gnd + ? base off rf out rf out ? + v cc v cc ? + pre out b in b ? f rf in f / r ? + in a ? f 24 1 8 22 21 13 14 1 9 17 1 5 2 0 2 3 3 2 1 0 5 7 12 11 6 1 8 9 pre a pre b 4 nf b 1 6
ta2002f / fn 2002-10-30 3 terminal explanation terminal voltage: typical terminal voltage at no signal with test circuit (v cc = 3v, ta = 25c) terminal no. name function internal circuit terminal voltage (v) 1 pre gnd the gnd, except the power drive stage. D 0 2 in a f 3 in a r 22 in b r 23 in b f input of preamplifier. f / r sw open: (2) / (23) pin "l" : (3) / (22) pin 1.3 4 nf a 21 nf b nf of preamplifier. 2 3 4 v ref 500 ? 500 ? 17 1.3 5 pre out a 20 pre out b output of preamplifier. 500 ? 17 5 1.3 6 pw in a 19 pw in b input of power amplifier. 1.3 11 out a 14 out b output of power amplifier. 6 500 ? 20k ? v ref 22k ? 1k ? 11 v ref 1.3 7 rf in ripple filter terminal. + 32k ? 4k ? 7 100k ? 2.6 8 pw sw power on / off switch. v cc : power on open or gnd : power off 20k ? 8 v cc 47k ? 10k ? D 9 pw mute muting switch for power amplifier. v cc : power amp. on open or gnd : power amp. off v cc 20k ? 6.8k ? 9 D
ta2002f / fn 2002-10-30 4 terminal no. name function internal circuit terminal voltage (v) 10 f / r sw forward / reverse mode switch. open : forward mode "l" level: reverse mode this terminal can't be connected with gnd line directly. in case of reverse mode, a resistor (r = 180k ? ~270k ? ) should be connected to gnd. 48k ? 17 to pre 1k ? 330k ? 10 sw 24k ? D 12 pw gnd gnd for power drive stage. D 0 13 out c output terminal of center power amplifier. + 30k ? 24 13 1.3 15 v cc D D 3 16 base base bias of an external pnp transistor for ripple filer. 2.3 17 rf out ripple filter output. ripple filter circuit supplies internal circuit except power amplifier circuit with power source. + 7 16 rf out + v cc q x 17 15 2.6 18 pre sw muting switch for preamplifier. v 17 (rf out) : preamp. off open : preamp. on this terminal can't be connected with gnd line directly. in case that terminal is connected with gnd line, a resistor (r 10k ? ) should be connected to gnd. 48k ? to f / r 24k ? 1k ? sw 17 18 100k ? D 24 v ref reference voltage. preamplifier and power amplifier operate on this reference. 13k ? 16.5k ? 17 + 24 1.3
ta2002f / fn 2002-10-30 5 application note ( 1 ) pw sw it is necessary to connect an external pull down resistor with the terminal pw sw (pin (8)), in case that this ic is turned on due to external noise etc. (2) pw mute the leak current flows through the terminal of pw mute (pin(9)), in case that the terminal is connected with v cc line independently, even though this ic is off mode (the terminal of pw sw (pin(8)) is off mode). it is advised to connect r 1 and c with the terminal of pw mute, to reduce a pop sound in switchover between pw mute on / off. and it is advised to connect r 2 , 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 r 1 P r 2 P 1 00k ? , c P 1 f at v cc = 3v. as for the constants, select the optimum one depending on each a set carefully. fig.1 pw mute circuit reducing a pop sound (3) f / r sw the terminal of f / r sw (pin( 1 0)) should not be applied to higher voltage than v 1 7 (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 r 3 ( 1 80~270k ? ) , because the f / r sw circuit doesn't operate normally. it is advised to connect an external capacitor (c 3 P 1 f), 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. fig.2 internal equivalent circuit of f / r sw and pre sw and the external circuits reducing a pop sound in switchover. 9 v cc r 1 r 2 c 24k ? 1k ? 100k ? pre sw 18 330k ? 17 10 rf out f / r sw r 4 c 4 1k ? 48k ? r 3 c 3
ta2002f / fn 2002-10-30 6 in controlling the f / r sw with voltage source, it is applied as follows; forward mode: 0.8v~v 1 7 (rf out) reverse mode: 0. 1 5v~0.35v (4) pre sw the terminal of pre sw (pin( 1 8)) should not be applied to higher voltage than v 1 7 (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 1 0k ? ). it is advised to connect a external resistor (r 4 = 1 00~330k ? ) and capacitor (c 4 P 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~ v 1 7 (rf out) (5) nf resistor of preamplifier the nf resistor (r = 39k ? ; 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 1 0k ? , it can be connected with power amplifier directly as fig.3 1 . in case more than 1 0k ? , 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. fig.3 1 volume connection (1) (r 10k ? ) fig.3 2 volume connection (2) (r > 10k ? ) pre out a 5 6 pw in a v ref pre out a 5 pw in a v ref 6
ta2002f / fn 2002-10-30 7 (7) increase of ripple filter current it is built in pnp transistor for a ripple filter, the current capacity is about 1 0ma. then this ic can be increased the current capacity of the ripple filter with an external transistor q x (exp. 2sa 1 362). in this case, as the current gain is up, it is necessary to connect external parts for phase compensation (see fig.4). and it is necessary to stabilize the ripple filter circuit carefully, because the ripple filter circuit supplies internal circuit except power amplifier circuit with power source. fig.4 increase of ripple filter current (8) pattern layout (a) the gnd line of pin( 1 ) (pre gnd) should be isolated from that of pin( 1 2) (pw gnd) at the gnd point, where the v cc 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( 1 2) (pw gnd). (c) the pattern diagram between the pin(24) (v ref ) and capacitor should be made shortly. as for pin( 1 ) (pre gnd), it's as well. (d) the pattern diagram between the pin( 1 2) (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(6), ( 1 9). (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. 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 v cc and gnd capacitor between v ref and gnd 43 ? 10k ? 16 15 rf out v cc ? + v cc q x rf out base monolithic ceramic condenser 0.22f ? + 17
ta2002f / fn 2002-10-30 8 an example of pattern layout maximum ratings (ta = 25c) characteristic symbol rating unit supply voltage v cc 6 v power i o (peak) 60 output current ripple filter i rf 30 ma ta2002f 400 power dissipation ta2002fn p d (note) 500 mw operating temperature t opr 25~75 storage temperature t stg 55~150 c (note) derated above ta = 25c in the proportion of 3.2mw / c for ta2002f, and of 4mw / c for ta2002fn. 0.22 + in a ? f in a ? r in b ? r gnd out c out b r l r l out a ? v cc in b ? f ? + ? + ? + 1000pf 1000pf 1000pf 1000pf 18k ? 10k ? 100k ? 470 ? 8200 p f 100k ? 470 ? 470k ? 8200pf 100k ? 220k ? 4.7 ? 4.7 ? rf out monolithic ceramic condenser 22f 22f 2sai362 ? y 22f 1f 4.7f 1f 1f 0.1f 47f 0.1f 1f 16 ? 16 ? f 1f 22f 1f + ? 24 1 8 22 21 13 14 1 9 1 6 17 15 2 0 2 3 3 2 1 0 5 7 12 11 6 1 8 9 4 + 10k ? 39k ? 470k ? 10k ? 43 ? 18k ? 39k ?
ta2002f / fn 2002-10-30 9 electrical characteristics unless otherwise specified: v cc = 3v, f = 1khz, ta = 25c, sw 1 : a, sw 2 : a, sw 3 : open, sw 8 : on preamplifier stage: r g = 2.2k ? , r l = 10k ? , sw 2 : open, sw 4 : on / open, sw 5 : a / b, sw 6 : a power amplifier stage: r g = 600 ? , r l = 16k ? , sw 3 : on, sw 7 : a characteristic sym bol test cir cuit test condition min. typ. max. unit i ccq1 power off, sw 1 : b, sw 2 : b sw 3 : on D D 5 a i ccq2 power amp. off, sw 2 : b D 5 9 quiescent current i ccq3 D v in = 0 D 11.5 16.5 ma voltage gain g v 25 27 29 channel balance cb v o = 12dbv D 0 1.5 db p o1 r l = 16 ? 35 50 D output power p o2 thd = 10% r l = 32 ? D 33 D mw total harmonic distortion thd1 p o = 1mw D 0.2 0.8 % output noise voltage v no rg = 600 ? , sw 7 : b D 22 40 v rms ripple rejection ratio rr 1 f r = 100hz, v r = 22dbv sw 8 : open 45 62 D cross talk (ch a / ch b) ct 1 v o = 12dbv 35 42 D power amplifier stage power muting attenuation att1 D v o = 12dbv, sw 2 : a b D 80 D db open loop voltage gain g vo v o = 12dbv, sw 6 : b 70 80 D closed loop voltage gain g vc v o = 12dbv D 35 D db maximum output voltage v om thd = 1% 600 850 D mv rms total harmonic distortion thd2 v o = 12dbv D 0.02 0.1 % equivalent input noise voltage v ni r g = 2.2k ? , bpf = 20hz~20khz sw 5 : c nab (g v = 35db, f = 1khz) D 1.3 2.8 v rms cross talk (ch a / ch b) ct 2 D 70 D cross talk (forward / reverse) ct 3 v o = 12dbv D 70 D preamplifier stage pre muting attenuation att2 D v o = 12dbv, sw 3 : open on D 80 D db ripple filter output voltage v rf v cc = 2v, i rf = 0ma 1.76 1.8 D v ripple rejection ratio of ripple filter output rr 2 D v cc = 2v, i rf = 10ma f r = 100hz, v r = 22dbv sw 8 : open 45 53 D db power on current i 8 v cc = 1.8v, v 24 0.5v 5 D D a power on / off switch power off voltage v 8 D v cc = 1.8v, v 24 0.3v 0 D 0.3 v mute off current i 9 v cc = 1.8v, att1 3db 5 D D a power amp. mute switch mute on voltage v 9 D v cc = 1.8v, att1 60db 0 D 0.3 v
ta2002f / fn 2002-10-30 10 test circuit 10k ? 220f (a) 8200pf sw 6a pre out 4.7 ? 1000pf (b) (b) v cc pre out in a ? r in a ? f pw sw pw mute f / r sw pre out a nf a rf in pw gnd out a pw in a pre gnd (a) v cc v ref pre sw in b ? r nf b out c pw in b out b base rf out v cc pre out b in b ? f rf out ? + (a) (b) sw 5b 18k ? 39k ? r g = 600 ? 39k ? 470k ? 18k ? 220k ? 22f 1f 4.7f 1f 600 ? 1f (a) (a) (b) 1 f 16 ? 16 ? sw 2 sw 4 sw 1 8200pf 1000pf 1000pf 1000 p f r g = 600 ? 10k ? 1f 2.2k ? 1f 1f r g = 600 ? r g = 600 ? sw 5a sw 6b sw 7a sw 7b sw 3 sw 8 f r = 100hz (b) (a) (b) (a) (b) (c) (a) (b) (c) ~ ~ ~ ~ ? + ? + ? ? + 22f ~ ? + ? + ? + 0.1f 4.7 ? 600 ? 2.2k ? 470 ? + 220f monolithic ceramic condenser 24 18 22 21 1 3 14 1 9 1 6 17 1 5 2 0 2 3 470k ? 22f 2.2k ? 2.2k ? 3 2 1 0 5 7 12 11 6 1 8 9 4 47f 22f 470 ? 0.1 f
ta2002f / fn 2002-10-30 11 characteristics curves unless otherwise specified: v cc = 3v, f = 1khz, ta = 25c power amplifier stage: r g = 600 ? , r l = 16 ? preamplifier stage: r g = 2.2k ? , r l = 10k ? 60 0 2 40 20 3 4 5 pw p o ? v cc supply voltage v cc (v) maximum output power p o (mw) r l = 16 ? r l = 32 ? thd = 10% pw thd1 ? p o output power p o (mw) total harmonic distortion thd1 (%) 20 0.2 10 5 2 1 0.5 0.2 0.5 1 2 5 10 20 50 100 f = 10khz f = 100hz f = 1khz pw ct 1 ? f frequency f (hz) cross talk (ach / bch) ct 1 (db) 0 80 20 20 40 60 50 100 200 500 1k 2k 5k 10k 20k v o = ? 12dbv 20 40 30 20 50 100 200 500 1k 2k 5k 10k 20k pw g v ? f frequency f (hz) voltage gain g v (db) v o = ? 12dbv supply voltage v cc (v) output dc voltage v o (v) v o ? v cc 3 0 2 2 1 3 4 5 v rf v o (c), v ref supply voltage v cc (v) quiescent current i ccq (ma) i ccq ? v cc 12 0 2 8 4 3 4 5 v in = 0 pw mute on
ta2002f / fn 2002-10-30 12 2 50 1 0.5 0.2 0.1 0.05 0.02 100 200 500 1000 0.01 pre thd2 ? v o output voltage v o (mv rms ) total harmonic distortion thd2 (%) f = 10khz f = 100hz f = 1khz 20 60 40 20 50 100 200 500 1k 2k 5k 10k 20k 0 pw v no ? r g freqiency f (hz) output noise voltage v no (v rms ) r g = 600 ? 20 80 2 40 60 3 4 5 0 supply voltage v cc (v) ripple rejection ratio of power amplifer rr 1 (db) pw rr 1 ? v cc f r = 100hz v r = ? 22dbv 100 20 20 80 60 40 50 100 200 500 1k 2k 5k 10k 20k pre g vo , g vc ? f freqiency f (hz) v o = ? 12dbv open loop voltage gain g vo (db) closed loop voltage gain g vc (db) g vo g vc 20 ? 40 ? 40 0 ? 20 ? 20 0 20 ? 60 pw v o ? v in input voltage v in (dbv) output voltage v o (dbv) v cc = 4.5v v cc = 3v f = 1khz v cc = 1.8v 1.2 2 0.8 0.4 3 4 5 0 supply voltage v cc (v) maximum output volotage v om (v rms ) pre v om ? v cc f = 1khz thd = 1%
ta2002f / fn 2002-10-30 13 1.8 0 5 1.6 1.4 10 15 20 rf v rf ? i rf ripple filter output current i rf (ma) ripple filter output voltage v rf (v) v cc = 2v 15 0 ? 20 10 5 0 40 80 20 20 60 ambient temperature ta (c) quiescent current i ccq (ma) i ccq ? ta v in = 0 pw mute on 40 20 60 80 100 50 100 200 500 1k 2k 5k 10k 20k pre ct ? f freqiency f (hz) v o = ? 12dbv cross talk (ach / bch) ct 2 (db) cross talk (fwd / rev) ct 3 (db) fwd / rev ach / bch 0 60 2 20 40 3 4 5 0 supply voltage v cc (v) ripple rejection ratio of ripple filter rr 2 (db) rf rr 2 ? v cc f r = 100hz v r = ? 22dbv i rf = 10ma 60 0 ? 20 40 20 20 40 80 80 0 60 pw p o ? ta ambient temperature ta (c) output power p o (mw) r l = 16 ? r l = 32 ? thd = 10% 1.5 0 ? 20 1 0.5 0 40 80 2 20 60 ambient temperature ta (c) output dc voltage v o (v) v o ? ta v rf ( v cc = 2v ) v o (c), v ref
ta2002f / fn 2002-10-30 14 50 80 ? 20 60 70 20 40 80 40 0 60 ambient temperature ta (c) cross talk ct (db) pw (ach / bch) pre (ach / bch, fwd / rev) v o = ? 12dbv ct ? ta 900 600 ? 20 800 700 0 40 80 1000 20 60 0 0.02 0.04 0.06 0.08 ambient temperature ta (c) maximum output voltage v om (mv rms ) v om thd2 pre v om , thd2 ? ta total harmonic distortion thd2 (%) 30 15 ? 20 25 20 0 40 80 35 20 60 0 0.5 1.0 1.5 2.0 ambient temperature ta (c) voltage gain g v (db) g v thd1 pw g v, thd1 ? ta total harmonic distortion thd1 (%) 60 ? 20 40 20 0 40 80 80 20 60 pre g vo , g vc ? ta ambient temperature ta (c) open loop voltage gain g vo (db) closed loop voltage gain g vc (db) g vc v o = ? 12dbv g vo 20 80 ? 20 40 60 0 40 80 0 20 60 ambient temperature ta (c) ripple rejection ratio rr (db) rr ? ta rf pw f r = 100hz v r = ? 22dbv
ta2002f / fn 2002-10-30 15 application circuit 470 ? 22 f 22f 470 ? 8200 p f 220k ? + ? + pre a v ref pre sw on in a ? r in a ? f in b ? r pw sw f r v cc off on off on pw mute f / r sw nf b pre out a nf a rf in + ? monolithic ceramic condenser pw gnd out c pw c pw in b out b out a pw in a pw b pw a pre gnd + ? base off rf out ? + v cc v cc ? + pre out b in b ? f pre b r l ? 4.7 ? 0.22 43 ? 10k ? 10k ? 18k ? 100k ? 470k ? 2sai362 ? y 22f 1f 1000pf 47f 1f 1f 0.1f 1000pf f 1f 22f 0.1 f 4.7 ? 10k ? 100k ? 100k ? 1000pf 1f 8200pf 1000pf 1f 4.7f 39k ? 39k ? 18k ? 470k ? 3 2 1 0 5 7 12 11 6 1 9 8 ripple filte r sw r l 4 24 1 8 22 21 1 3 14 1 9 1 6 17 1 5 20 2 3 rf out
ta2002f / fn 2002-10-30 16 package dimensions weight: 0.32g (typ.)
ta2002f / fn 2002-10-30 17 package dimensions weight: 0.14g (typ.)
ta2002f / fn 2002-10-30 18 toshiba is continually working to improve the quality and 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 comply with the standards of safety in making a safe design for the entire system, and to avoid situations in which a malfunction or failure of such toshiba products 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 ranges as set forth in the most recent toshiba products specifications. also, please keep in mind the precautions and conditions set forth in the ?handling guide for semiconductor devices,? or ?toshiba semiconductor reliability handbook? etc.. the toshiba products listed in this document are intended for usage in general electronics applications (computer, personal equipment, office equipment, measuring equipment, industrial robotics, domestic appliances, etc.). these toshiba products are neither intended nor warranted for usage in equipment that requires extraordinarily high quality and/or reliability or a malfunction or failure of which may cause loss of human life or bodily injury (?unintended usage?). unintended usage include atomic energy control instruments, airplane or spaceship instruments, transportation instruments, traffic signal instruments, combustion control instruments, medical instruments, all types of safety devices, etc.. unintended usage of toshiba products listed in this document shall be made at the customer?s own risk. the products described in this document are subject to the foreign exchange and foreign trade 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. 000707eb a restrictions on product use

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