TA7371AF TOSHIBA | Alldatasheet

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TOSHIBA BIPOLAR LINEAR INTEGRATED CIRCUIT SILICON MONOLITHIC The TA7371AF is an FM FRONT END IC designed for low voltage operation (1.5V), which is suitable for Stereo Headphone Radio or Radio Cassette. This IC contains RF Amplifier, MIX, Local Oscillator and Varactor Diode for AFC. d It simplifies the design of FRONT END Circuit. ai, OTTO ZYa\\siSe FEATURES = @ Clamping diode for mixer output. @ Varactor diode for AFC. SOP8-P-225-1.27 @ Low quiescent current. Icc =1.8mA (Typ.) (Vcc = 1.5V, Ta = 25°C) © Low noise. @ Very few external parts. ©@ Operating supply voltage range. : Vcc =0.95~5V (Ta =25°C) BLOCK DIAGRAM

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961001 EBA2

© 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 stres. 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 foreign exchange and foreign trade control laws. © ‘he information contained herein 's presented only as a guide for the applications of our products. No_ responsibilty 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. 1997-07-07 1/7

EXPLANATION OF INNER CIRCUIT AND FUNCTIONS (1) RF block @-Hout oe - ‘ ANT vec The radio signal is applied to RF INPUT passed vv [J through the ANT and BPF. This RF block is composed of the common emitter iS amplifier. The output is designed to be the cascade Lor | RE >) connection, because of high sensitivity characteristic, INPUT] and excellent spurious radiation. (Fig.1) (Fig.1) (2) MIX block The MIX block is composed of the emitter coupled © pair amplifier. (Fig.2) O Vcc (3) OSC block | OSC block is composed of the colpitts oscillation circuit. IK—O 05¢ The capacitors C1 and Cp are built in this IC. to RF block i (Fig.2) Vec vec © oy (Fig.3) 1997-07-07 2/7

MAXIMUM RATINGS (Ta = 25°C) CHARACTERISTIC SYMBOL RATING UNIT Supply Voltage [vee] 5 |v] Pp (Note) Operating Temperature =25~75 = 55~150 (Note) Derated above Ta =25°C in the proportion of 2mW/°C.

ELECTRICAL CHARACTERISTICS

(Unless otherwise specified, Vcc =1.5V, Ta=25°C, f=83MHz, Af = +22.5kHz, fm = 1kHz) TEST} CHARACTERISTIC SYMBOL TEST CONDITION fw |v. [ax] unr | CUIT, Supply Curent Dec] 2 Wnso SSCS i | mA Input Limiting Sensitivity | Vin (lim) = 3dB Limiting Point [ — | 10[ 16 [dBuv EMF [Quiescent Sensitivity | Qs | 2 |S/N=30dB P= 2 | — 6b ewe Local Oscillator Voltage f= 60MHe [75 | 110-| 150. meme | Local Oscillator Stop AFC Diode Capacity | Care| 6 |f=70Mz, Varc=3v_| — | 50| — | pF _| mint input Impedance femme [= [300 — [a] |= | e7[—] pF Pin® Input Impedance feed a | f= 10.7MHz [=| woof — ft Ka | i P= | 22;— J ka | [= |] 48] —T pF | TERMINAL VOLTAGE Terminal voltage at no signal (Vcc =1.5V, Ta =25°C) TERMINAL VOLTAGE TERMINAL No. TERMINAL NAME eer SSCSsSCSC~—itSCCC*d a [3 [are prope (caTHoDe) | SS [4 [Arc piope (nope) | SS S—~*S [5 [toca osc [6 [mixer ourPuT [ere our 1997-07-07 3/7

Vosc: Vstop TEST CIRCUIT Vec=av vec=15v O74 = “ aes a]. |S ° ~ GR ©O—-D—-O—- Spr Cc. CS OO?) & 3 adjustment TEST CIRCUIT 2 Vec=1.5V Vec=4V ° z oO Sf}, ou stg ay ef. STs, Ss & q 3, ThA pt. t)| Ae 7 ' Ses z Lornnnn ' eye Et voo ©O-O-O-S " eo TOOPO-OHH-D o) vi 8 TA7371AF / TA7640AP VALVE VOLTMATER O-2-O-O O-2-O-~O-O-O-O-O “g egageas <a wt Vin EM ahoog O GND @ Conversion Gain : Gc (dB) =20¢og vit in TO 99OTOT

INPUT / OUTPUT IMPEDANCE TEST CIRCUIT Input/output impedance and AFC diode capacity test cirucit TEST CIRCUIT 3 Rip 1, Cip 1) TEST CIRCUIT 4 Rop 2, Cop 2) Pin@ input impedance Pin® output impedance Voc (1.5V) Vec (1.5V) oO o Od | red tO Vol |x oO “OW | m ©, 1 m | Fs METER 2 METER 2 u e) L y & Es TEST CIRUCIT 5 (Rop 3, Cop 3) TEST CIRUCIT 6 (Caro) Pin® output impedance AFC diode Vec(1.5¥) Varc GV) O re) 100k | ra | a || OWE ox "ote P METER < METER u 2) u ® COIL DATA FOR TEST CIRCUIT (Lower side heterodyne type) COIL NAME | fo | 2 | TURN CAPACITANCE COMMENT veo ly 0-@ 137 82pF Bobbin with ferrite core ® RF 4 | (External) | ¢0.5mm UEW Orgs lo 1 24pF Bobbin with ferrite core © osc | 1OMH2 | 100| 0-9 277! external) ¢0.5mm UEW Pin 14 @-@ 12T SUMIDA ELECTRIC Co. LTD. rome] 15 @6 11 | 7°°F _|0133-309-048 t T2 , SUMIDA ELECTRIC Co. LTD. ® sr® QUAD 10.7MHz| 150|@-© 14T A7pF 44M--037-933A o£ oO +O RF BPF SOSHIN ELECTRIC Co. LTD. BPW B6A (potmm view) IF BPF MURATA ELECTRIC Co. LTD. SFE 10.7 MA5 1997-07-07 5/7

2 Ic, Af - Ta ¢ Vin (lim). S/N - Ta = 400, 4 wu 80) 0 ira g = f=83MHz = 200) Vin=0 OE E 60 no Fy = fm= kHz 5 g AS Sg 2 8 oe) 2 ee eee 2 = Ed s Lie TTT TTT TT) * § Lp Reese GE ga LITT TTT itt = fl T TT vm] TTT | 8 -400 lo 2 leo i eT g Ss <2 0 2 50 75 100 AMBIENT TEMPERATURE Ta (°C) AMBIENT TEMPERATURE Ta (°C) g _ THD, Vop, AMR, S/N - Vin 5 35 'cc = Voc 258 £=83MHz, fm =1kHz, Af= #22.5kHz z z Veco en ee i 4 Kama] @ © | I I | ee Coe ee po es “TTIMeENT rere ge | tit TT TT ee oN ohe ote 8 CE ee LEAR Bp eee \\Sudeepteet Et 2 ee TTT TNS RES ayo #, gered, LIT TI Titi ti ty g2e =20 0 20 40 60 80 100 120 0 1 2 3 4 3 INPUT VOLTAGE Vin (dBpV EMF) SUPPLY VOLTAGE Vcc (V) z Af, Vin (lim) Q5 — Voc = Carc - VAFC = 200 40 2 10 a Pitt eit tet q Lt JL TT Jer encur t at g. f= 70H pt pee ee, fe

2 LLY TT I Jewroera f Se 8 INT TTT TT TTT |

g fm = kHz z ° N — 200) ‘m 20 EX 6 s LIN TTT | forsee Foe eg LTT REALE TT : ra a PCREEE gS Sf MEET Po PET ee 8 ft ET | | Ps eo LT Pe HH LT TTT Ter yy yy 3 = So ttt | [TTT 3s BERR a SUPPLY VOLTAGE Vcc (V) BIAS VOLTAGE Vgc (V) 1997-07-07 6/7

SOP8-P-225-1.27 Unit : mm 8 5 HAAD J nN a3) = J ale g| ¢ Fle ida S 1 4 0.595 al Lo4:0 erat see ELIC) 5.5MAX 5.0+0.2 Nn x 19 4 uo = 3 ite] ne cS 0.525+0.2 Weight : 0.08g (Typ.) 1997-07-07 7/7