TA2022AFN TOSHIBA | Alldatasheet
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TOSHIBA BIPOLAR LINEAR INTEGRATED CIRCUIT SILICON MONOLITHIC 1.5V AM/FM IF + MPX TA2022AFN is the AM/FM IF +MPX system IC, which is developed for headphone radio in 1.5V use. This is included many functions and this can be used for Digital Tuning System with IF counter. FEATURE ANN @ Suitable for combination with Digital Tuning System See which is included IF counter. « Built-in AM/FM IF count output for IF counter of Digital Tuning system SSOP24-P-300-0.65A ‘9! 9 >y . Weight : 0.14g (Typ.) FM : 10.7MHz AM : 450kHz « Adjustable for stop pulse sensitivity (in FM mode) © For adopting ceramic discriminator, it is not necessary to adjust the FM QUAD detector circuit. @ Built-in AM IF output for AM stereo @ MPX input for main signal is independent of that for pilot signal. (MPX input for pilot signal is shared with AM input) @ MPX output is high-impedance in power off mode. @ Built-in power switch @ Low supply current (Vcc = 1.2V, Ta = 25°C) FM mode: Icc2=5.5mA (Typ.) AM mode: Icc3 =3.7mA (Typ.) @ Operating supply voltage range (Ta = 25°C) Vcc (opr) =0.95~2.2V @ Stereo operating supply voltage range (Ta = 25°C) Vc (opr) = 1.0~2.2V 9809 10EBA2 @ TOSHIBA is continually working to improve the quality and the reliability of its products, Nevertheless, semiconductor devices in general can malfunction or fall due to thei inherent electrical sensitivity and, vulnerability to physical stress. itis the responsibilty of the buyer, when utlizing 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 ranges as set forth in the most recent products specifications. Also, please keep in mind the precautions and conditions set forth in the TOSHIBA Semiconductor Reliability Handbook. @ 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 e The information contained herein is subject to change without notice. 1998-12-24 1/17
TOSHIBA —C—C—“‘CSCSCSCSCSC#STAQ202.2AFN BLOCK DIAGRAM Rout tour AM & FM. ON & OFF | d 5 I o( AMIE
4 STIND
69 IN et eet 6 IN en = as oo Go ot aot «3
sH{ ett = t+ +o mA =|] |e oT eS A\\ ae Ly Vee eM ‘Quad “acc ‘GND our re 1 e—t—-ll = ; ! { [bap ioe ‘OPEN : IF REQ vec | or
Terminal voltage : Typical terminal voltage at no signal with the test circuit 1 (Vcc =1.2V, Ta=25°C) FUNCTION INTERNAL CIRCUIT VOLTAGE (V) [No.[ Name _| [am | FM | Referential voltage VREF Bypass terminal for AM RF and FM IF Amplifier I Bae osc AM OSC 1.2 1.2 tel MIX Output of AM MIX Pe | 1.2 | 1.2 Input of FM IF signal =a! FM IF IN | @ Input impedance @ Kw Ls [vee | g S Input of AM IF signal . ° AM IF IN @ Input impedance (6) 1.2 1.2 3kQ (Typ.) i may $ Z| ¢ =] = 7 | QUAD FM QUAD Detector 1.2 1.2 1998-12-24 3/17
FUNCTION INTERNAL CIRCUIT VOLTAGE (V) [No.| NAME | [am [Mt | @ AM mode AGC time constant is "Kem am o determined by external L£ capacitor. AM DET AGC @ FM mode \\ The sudden change of stop oO pulse sensitivity is held in by * external capacitor. ; Po [eno Po Output of IF count signal In case of IF request mode, IF IF OUT count signal for IF counter is 9 taken from this terminal. ( FM : Vig (FM) =80mVp-p (Typ.) d AM : Vig (AM) = 100MVp-p (Typ.) ps IF request switch we ian (ce : Receive mode 4} OPEN :IF request mode < FM stop pulse sensitivity can Ooo] F | IF REQ . be changed by connecting 75mv Rsen in IF request mode. 47kQ Rsen should be smaller than L 100k. \\ Output of stop pulse VCO frequency can be a monitored, in case that this 3 terminal is connected with ~ 12 | SP OUT GND through a resistor eo (Ryco= 100k). wok (oN : VCO monitor OPEN : SP OUT Stereo indicator terminal @ This terminal shared with output of modulated AM IF 7 signal. e @ AM IF output : 6mV, 13 | ST IND (Rip = 3k, Typ) rms i © Rig should be smaller than inam @ & NP 3kQ. In case that Rip>3kQ, FS internal biasing circuit doesn’t operate normally in AM mode. 1998-12-24 4/17
FUNCTION INTERNAL CIRCUIT VOLTAGE (V) [No.| NAME | [am [Mt | LouT Output of stereo signal These terminals are high- o 1-0 impedance in power off ESaO) 15 | Rout mode. \\ LPF, LPF terminal for phase detector ic (ON : FM MONO. Voc vco veo The temperature characteristic 17 | VCO of free running frequency is 1.2 +350ppm/°C. Temperature coefficient : SH LPF terminal f h ae LPF24 erminal tor synchronous o—1 2) Tas S detector 3 por GP - (3) LPF terminal for synchronous na detector and AM/FM switch FM 1PF2B (Nes : AM mode i ie) 2 OPEN : FM mode am on Ly =z: PILOT IN Input of FM stereo pilot signal 10k2 37k Yo and AM signal a 1998-12-24 5/17
FUNCTION INTERNAL CIRCUIT VOLTAGE (V) [No.| NAME | [am [Mt | MPX IN Input of FM stereo main signal 14k 0.1 oo Q0) - FM aM. Detector output circuit DET DET © Output impedance (Typ.) 8,4kQ_10k2 | 5000 22 | DET OUT ( AM. : 10k yet eo FM: 1kQ y LY Vee a Power switch L, 23 | Pw Sw (Nec : IC on a ® 6 1.2 | 1.2 OPEN/GND : IC off Fa acc Input of AM RF signal a) 24 | AM RF IN @ Input impedance : 13kQ. [3 (Typ., at no signal) @) 30 f Macc S 1998-12-24 6/17
- Power switch It is necessary to connect an external pull-down resistor with the terminal of PW SW (pin®), in case that this IC is turned on due to external noise etc. 2. Mode switch The terminal of AM/FM changeover is pin. In controlling the AM/FM mode with voltage, it is applied as follows. ( Vcc : AM mode OPEN: FM mode In FM mode, care should be taken to eliminate influence due to external noise etc, because this terminal is opened. The leak current flows through this terminal, in the case that the terminal is connected to V¢c¢ line independently, even through this IC is off mode (the terminal of PW SW (pin®) is off mode). 3. IF count output IF count signal can be taken from IF output terminal (pin@®), when IF request terminal (pin{) is connected with GND through Rs_en and stop pulse sensitivity is on. SWITCH CONDITION OUTPUT OUTPUT OUTPUT (pind) | __pind9___| FREQUENCY | VOLTAGE (Typ.)| IMPEDANCE (Typ.) [Fw] Oren oka [aw (sen 100k) Table.1 IF count output SP2 - RSEN FM stop pulse sensitivity can be changed by z BNE connecting an external resistor RseN < \\ between IF request terminal (pind) and § 70 ERNE GND. The gain of FM IF amplifier is E PIXE EEE TI controlled by Rsen, and FM stop pulse 5 ‘ PF tE NEL 0 . sensitivity is changed. ca rt ty) ) {EL It is advised that Rsen is 100kQ or less. 3 rf? tLeee ef] S50 RESISTOR BETWEEN PINT) AND GND Rsen (k2) Fig.1 SP2 — Rsen 1998-12-24 7/17
- MPX IN This IC can attenuate only FM stereo main signal level. Because MPX input for main signal (pin®) is independent of that for pilot signal (pin@), this terminal is shared with AM input). ® Internal circuit of MPX IN terminal (pin@) is shown in Fig.2. FM stereo main signal level can be attenuated by connecting an 142 AQ external resistor Rx. Because FM stereo main signal level is ot RX o~ S attenuated by internal resistor (14k and 10k) and resistor IN 2 Rx. And it is applied to an emitter of transistor Q. Fig.2 Internal circuit of MPX 6. AM tweets IN terminal It is necessary to connect the capacitor Ct (about 330pF) vee our between Vcc terminal (pin®) and DET OUT (pin®), in case that AM tweets occurs by pattern layout. (Fig.3) This Ct can also functions as phase compensation of MPX stage. 3s0F 7. AM AGC Fig.3 Countermeasures for AM It is necessary to connect a capacitor C (about 68pF) between tweets Vcc terminal (pin®) and AM IF IN terminal (pin®), in case that AGC circuit doesn’t operate normally. Because second harmonic of local oscillator is applied AM IF terminal (pin®) by pattern “eo " layout. c In case that capacitor (C = 68pF) is connected, AM stop pulse it sensitivity is delayed about 1dB. 7 Output DC voltage of AGC terminal (pin®) is Vg =0.1V (Typ., Fig.4 AM trap circuit AM mode, at no signal). 8. Stereo indicator/AM IF output (for AM stereo) @ The terminal of pin® is built in stereo indicator function and modulated AM IF signal output. In AM mode, Rip (3kQ or less) should be connected between Vcc and pin®, or pin® = should connected to Vcc directly. (Fig.5) In case that Qe Rip>3kQ or pin® is opened, this IC doesn't operate No Kar normally in AM mode. Because transistor Q2 is saturated. In AM BS Fig.5 Internal circuit of pin® 1998-12-24 8/17
VIF (AM MOD) =6MVrms (Typ. Rif = 3k) The applications of this terminal are explained as follow. (a) Method to use stereo indicator and AM IF output. OVec External circuit is recommended as shown in Fig.6. @ #—~ am ie our ST IND Fig.6 Method to use stereo (b) Method to use stereo indicator. indicator and AM IF output. External circuit is recommended as shown in Fig.7. Rif is not needed in case that this IC is not use in AM é mode. ST IND Fig.7 Method to use stereo (c) Method to use AM IF output indicator. External circuit is recommended as shown in Fig.8. e pe AM IF output Fig.8 Method to use AM IF (d) In case that functions of this terminal are not used. output. External circuit is recommended as shown in Fig.9. o Rif is not needed in case that this IC is not used in AM = mode. Fig.9 In case that functions of this terminal are not used. MAXIMUM RATINGS (Ta = 25°C) CHARACTERISTIC SYMBOL RATING Supply Voltage [vee [#5 vd Stop Pulse Voltage [vse fa Stop Pulse Current Lisp | 10m Stereo indicator Voltage | Vsr | 45 | v_| Stereo Indicator Current Operating Temperature =25~75 Storage Temperature =55~150 (Note) Derated above Ta=25°C in the proportion of 4mW/°C. 8998-12-24 TT
ELECTRICAL CHARACTERISTICS
Unless otherwise specified Vec=1.2V, Ta= 25°C, SW1: a, SW4: OPEN, SWS: a, SW6: a/b, SW7 : ON FM IF: f=10.7MHz, fm =1kHz, Af= +22.5kHz, Vin = 80dByV EMF, SW2: ON, SW3:b AM: f=1MHz, fm = 1kHz, MOD =30%, Vin =60dBxV EMF, SW2: OPEN, SW3: a MPX : fm=1kHz, fp = 19kHz, SW3:b \\TEST| CHARACTERISTIC SYMBOL |CIR- TEST CONDITION TYP. | MAX. | UNIT (CUIT| Te PW OFF, SWi:b [— [=] sa Supply Current FM mode, Vin =0 P= [33 75) [AM mode, Vin=O_| — | 37| 55] Input Limiting Sensitivity -3dB Limiting uy Recovered Output Voltage 1] Vop1 | 35] 55] 70 |mVrms| ..[Signal To Noise Ratio | S/N1_| [= [60] — | as | ~[Total Harmonic Distortion 1] THD1 | — | o5[ — [| % | SAM Rejection Ratio [ AMR | MOD =30% | — | 40] — | ab | Stop Pulse Sensitivity 1 enone “ : oe | s0{ 55| 60] dByV tiv; 12=0.5mA, Rsen= EME Stop Pulse Sensitivity 2 SP2 SW6 : a, SW7 : OPEN | — | «| — | IF Output Voltage VIF (FM) [Af =0, SW7 : OPEN | — [| 80] — [mVpp| Vin= 26087 EMF [3 a7t— |, Recovered Output Voltage 2] Vop2_| | 30[ 45; «6o]| ™s Signal To Noise Ratio 2 S/N2 | — | 338[ — | a | ss[Total Harmonic Distortion 2 p—f 1s} — | q|Stop Pulse Sensitivity 142=0.5mA, SW6:a EME IF Output Voltage MOD =0, SW7 : OPEN | — | 100[ — [mVpo| Oscillator Vortage ; [30 | 55[ —_|mVvems Oscillator Stop Voltage P= = feast 1998-12-24 10/17
rest] CHARACTERISTIC SYMBOL |ciR- TEST CONDITION TYP. | MAX. | UNIT CUIT, Voltage Gain 1 [ =1.5] +05] +25] Voltage Gain 2 Vin=100mVems (MONO) [=05[ 415] +35] Channel Balance [-2,— [32 Maximum Composite Signal}, L+R=90%, P=10% Input Level Vin (MAX) rH =3% | - | 220 | = [rvems Total Harmonic FMONO_[ THOS] [Vin 100mVimg (WONO) | — [02] 05 feat L+R=90MVims, P=10MVims| — | 03] — | % “ [aM [THOS] |Vin=100mVims_ | — | 02] — | S| separation L+R=90mVrms ae 25 P P=10mVime em=tkHz | 25[ 35[ — | Stereo Indicator ilot si i Stereo indiator[ ON | ST(ony | Pt signal input [= ssl ah, sensitivity Iy3=0.5ma, sw5:a [2] al — | Stereo Indicator Hysteresis ro indicator turn off from | = [15] = frig Capture Range P=1mVims f= 19K | — | 27] — | % | Signal Noise Ratio 3 S7N3 Vin=100mVrms (MONO) | — | 65| — | aB | Power Switch [Off Voltage [wid | of — | 03] v_| vec=o.9sv [swss< | sof — | — | pa | FM MONO Mode On Voltage sw4:on [| — | o1/ — [| v | IF Request Off Voltage sw7:on | 09] — [| — | Vv | 1998-12-24 11/17
750 2700 ce om 22k 0.0226 500 7-2 veer AM | @®) x gS 00x *20098 5h gban ® vr 5 re Q) osc pw sw) 1 a ° | ( . FM 43k @ iF in oer our +A at te © Det ouT gs 3 Sy dg sw2 ©) mix PiLoT In @)) \\ 47 pF Vee CP ©) vec Px IN QO) e o Sh © abs, by ° CF, am f LO, ne OA —_ FH] oy & 2() S IL—@) quad LPF2q OD > eOpr cr 12k 720K. ace veo (3) S f+ om swa ° 0.047 uF avo else [3 g 0.082 uF 4.7K fs Ts 8] core
4 Ss -
iF OuT © S 3
8 R 8
SIF | sw y 84 So +1) iF REQ tour Oe te © tour ® sy ® IC) S sw5 Tip o—() sp out st ino (3) ° vco ° i Lixo MONITOR S * Temperature coefficient : SH (~330ppm/°C) CF}: SFE10.7MAB (MURATA Co,, Ltd.) CF2 : PFAASOA (MURATA Co., Ltd.) L 33K0 CR: CDA10.7MG5O (MURATA Co., Ltd.) OUT Oo Rout © S ‘© For measurement of the THD4, Vin (Max). and SEP the filter shown in Figure 10 is used bi ATT : ATT=60dB (f= 19~100kH2) Filter : 4501-054 (SUMIDA ELECTRIC Co., LTD) with insertion loss of 0.348 Fig.10 Filter circuit 1998-12-24 12/17
COIL TEST L Co TURNS WIRE REFERENCE FREQUENCY | (iH) | (pF) [a2 [23 | 13] 46 | (mm¢g) | (COILNo) TAM Ose | 7s6KH2 | 100 | — | 8 | 13 | 55 | — | — | O.06uEW | Oa1e7-144 T amet | —a50nHz | — [10 | 65 [| — | — [19a] 29 | o0suew | Garer-2aa © : SUMIDA ELECTRIC Co., LTD. L T Vr Vee CF, ma @ O77 me a ore | O- © O+ © Vee Pin® Vee (Bottom view) TEST CIRCUIT 2 © Vcc a\\ D. wt ® a. > @) Ao Bs @ x @y swa | 8 AMRF Pw Der PILOT MPX LPFap LPF2q VCO LPF} our tour ST. TA2022AFN FM IF AM IF ia ij sp Veer OSC =OIN = MIX Vcc IN. QUAD. AGC GND) OUT REQ. our O- WOO) 0) I i \\, SW7 Ly ers af 8] apa read 3. Fe “Be vo} Te ane (Note) Unless otherwise speicfied : C=0.022F ; 2200p cs a Teh? vose * The resistance (2k{2) should be adjusted so that the gain is = Fs oa. 1998-12-24 13/17
20 Vop, Vno, THD, AMR - Vin Vop, THD - Af
rTTT TT TTT ITT) ¢ ¢ LT pel TTT, 2 ft ttt tt bo TT 2 6. LAT TT PN LY oe , PUA: ? Jan, So A yromom Sb FE UTI e LEENA es mL, & BENE AA 2 4D Richee OOM afeoz LNgNEe| fo ea DNC | - Sa a 5 fm = 1kH: 4 | / a fm = 1kHz | ALA Tar samy | # 3 are272 50H CNS & 0 20 40 60 80 100 120 = 300 200 -100 0 100 200 300 INPUT VOLTAGE Vin (dBuV EMF) CHANGE IN FREQUENCY Af (kHz) lec - Vec Vop. Vin (lim). SP - Voc By ave TTT TTT TTT ¢ PUI ITH, # Z Poe} pL eg LTIIT TTI Te TTTT © tT ET <r Sof ome TTT TTT ¥ | | te TT [| £ Af= £22.5kHz LTTE ttre z a Pe S| Ninrtoeeev ee nt 2e zg 4 = -49 Vin (lim) 40 5S é [TTT Titty ty 2 | EER EFFEC e JUTE TTT TT 8 eee. 28 a z 23 LEE T TET ty ty ae Eee PLETE ETT TT TTT £ ta LLTITTITIT IT t| 3s SUPPLY VOLTAGE Vcc (V) SUPPLY VOLTAGE Vcc (V) Von. S/N, AMR, Vin (lim) - Ta 5
2 TTI CLILIITLO «3
e EERE eH, eee > TT £ - PITT T tT Ty set & . ons
3 SEE nim TT Ty” 338
eo titi ti tit ti, 283 g CELT Tse TT) 28: C4 qaZ -20 0 20 40 60 80 AMBIENT TEMPERATURE Ta (°C) 1998-12-24 14/17
Vop. Vno, THD = Vin 0 Vop, THD - MOD [TTT TT Tet tT] 2 2 sme CETTE) 2 TO ELLELLIZL EL, 2 E hint TT costar ene] 2 in 10048 2 _ I ARLE = A [7 [| Viye604 a em oo . 8 aL YON [; ee P| 3 ¢ CLINT Pere) sg “CTT ert, 8 bo CNet 8 § EE eaniar|? & COORDS, § og “EEA el | mur [Nit rte, bo: coer: i 00) ene 4 2 2 LR EP i toss eve |, 2 mows | | TTT TTI Ti) & 63 Sere be o> 460 a0 T0020 a a a INPUT VOLTAGE Vin (dByV EMF) MODURATION MOD (%) S60 Von, Gv, SP, Icc - Vin 3 Vop, Gy, S/N - Ta seCTTPTCereobeeet 2 pas “te Deere e HE ee» ft ee Sr se peer ref ad ee eee per ee PCS PPOPECLLLEEE UT? g PCS ee ee LTT Try tp | Ho Ae eee Cee G0 12 14 +16 18 20 22 233 =20 0 20 40 60 80 SUPPLY VOLTAGE Vcc (V) AMBIENT TEMPERATURE Ta (°C) MPX +00, CR &LR SEP, THD - fyco > RSS Sse ee LLL, ¢ ae eee eeeee denne sal Thamar ne 2 “CRN EEE Eee eae fneme™ | | | |] | tt] e re te | @ As pA. F £ ott AN teat YET a) TN — PIN 3g
2 UMN) (EROS I
2 ARS SSE - TTTTPitTLeeeey ¢
5 Se CoN COREE < é
2 COOOL ce ee
2 JT TP AMAT ETT Te rT NEL Leary =
CTT Tem PS | 54 a o 2 z 1@ 16 °~«18~«20:2=«sCSC 175. 180 185 190 195 200 205 FREE RUNNING FREQUENCY fycg (kHz) FREE RUNNING FREQUENCY fycg (kHz)
«o SEP, THD - Vin o +o SEP, THD - fm _ofittoe he sqteroimme (TNE TTT. S| mathe Heat ea APH * g [frente TTT TTT & 2 (eR, 2 er NOT 8 2 See ss g 5 FAN : ee NSS é PCO PENS * tT TT | lox | IN |g et TY, q COPE Pt Pst et F JETT, & de}, INPUT VOLTAGE Vin (mVrms) MODURATION FREQUENCY fm (Hz) Gy, SEP, THD - Vcc ST (ON). ST (OFF). fvco - Vcc SSS a, 2) Go” a -EEEEEE awe] Bs Be ott ; 3 | Eee wem | fo = p> e POT = Lo) a. 4 ot SEP. $40.6 Z}- -18 6| ST (ON) - & Se go2 & (eee 3 of PTE ma é ett tt TT | mon TTI s e [A TERT | LH gs § 2 LTT Titty Tey, z eT ime ee FP ETT Teg ee z 8 LEP EEe Tre lke |g e tit TT TTT Ty Tit, = lp LL LL | TT I estontins J, 8 2g LELITITITi til g o¢ 49 42 4a 16 18 20 22 a aT eT ee Ye SUPPLY VOLTAGE Vcc (V) SUPPLY VOLTAGE Vcc (V) 10 SEP, S/N, THD - Ta ST (ON). ST (OFF) - Ta ae PEEP) eg 3 Pee TTT TT
8 J [TT] tt ts) , eT] CELL Le
ae Vec=1.2V (i]t TTT ty = 5 a teresomime PTT gS LT 2 lee romy 1s E 5 a= é m CPP Perrys = PPE | ter po 8 Fe TTT a5 Dee eee se Ft) tite eeel 52 gate YY | te $2 ate peer: 2 LETTE TTT TTT 2 == ae “20 Fr a TY a 2 a 60 30 AMBIENT TEMPRATURE Ta (°C) AMBIENT TEMPERATURE Ta (°C) 1998-12-24 16/17
SSOP24-P-300-0.65A Unit : mm 24 13 DHEAAORHRERG AFAAAARAR AAA AA ay 2 S| & e| © wo n ROO w hw OHH HHe HOOOHRORHAoG 1 i 12 ff oes pose 8.3MAX 7.840.2 Nx 2 ° < erat ==. “= w oO a 0.45+0.2 o Weight : 0.14g (Typ.) 1998-12-24 17/17