Overview The LA1828 is a single-chip tuner IC for FM and AM with built-in MPX-VCO which requires no adjustment and no external parts.

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1 Ordering number : EN587A LA88 Monolithic Linear IC For Portable Radio/Cassette Recorders with Manual Tuning ingle-chip Tuner IC Overview The LA88 is a single-chip tuner IC for FM and AM with built-in MPX-VCO which requires no adjustment and no external parts. Features ingle-chip tuner with AM, FM-FE/FM-IF, MPX circuitry Built-in adjustment-free MPX-VCO (noceramic oscillator required) Reduced FM-FE oscillation level FM stereo indication and AM/FM tuning indication outputs can directly drive LEDs Functions AM : FM-FE : FM-IF : MPX : RF amplifier, mixer, oscillator, IF amplifier, detector, AGC, tuning display output RF amplifier, mixer, oscillator IF amplifier, quadrature detector, signal strength meter, tuning display output PLL stereo decoder, stereo display output, forced mono, internal VCO pecifications Maximum Ratings at Ta = 5 C Parameter ymbol Conditions Ratings Unit Maximum supply voltage V CC max 7. V Indicator drive current I LED pins 8, 9 ma Allowable power dissipation Pd max Ta 7 C mw Operating temperature Topr - to 7 C torage temperature Tstg - to 5 C Any and all ANYO emiconductor Co.,Ltd. products described or contained herein are, with regard to "standard application", intended for the use as general electronics equipment (home appliances, AV equipment, communication device, office equipment, industrial equipment etc.). The products mentioned herein shall not be intended for use for any "special application" (medical equipment whose purpose is to sustain life, aerospace instrument, nuclear control device, burning appliances, transportation machine, traffic signal system, safety equipment etc.) that shall require extremely high level of reliability and can directly threaten human lives in case of failure or malfunction of the product or may cause harm to human bodies, nor shall they grant any guarantee thereof. If you should intend to use our products for applications outside the standard applications of our customer who is considering such use and/or outside the scope of our intended standard applications, please consult with us prior to the intended use. If there is no consultation or inquiry before the intended use, our customer shall be solely responsible for the use. pecifications of any and all ANYO emiconductor Co.,Ltd. products described or contained herein stipulate the performance, characteristics, and functions of the described products in the independent state, and are not guarantees of the performance, characteristics, and functions of the described products as mounted in the customer's products or equipment. To verify symptoms and states that cannot be evaluated in an independent device, the customer should always evaluate and test devices mounted in the customer's products or equipment. 9 M PC/598RM(KI) No.587-/

2 Operating Conditions at Ta = 5 C LA88 Parameter ymbol Conditions Ratings Unit Recommended supply voltage V CC.5 V Operating supply voltage range V CC op.5 to. V Electrical Characteristics at Ta = 5 C, VCC =.5V, in specified test circuit, using Yamaichi Electronics socket IC-79- Parameter ymbol Conditions FM-FE characteristics fc = 98MHz, fm = khz, % mod. Local oscillator voltage V OC f OC = 8.7MHz, pin output *Measured with FET buffer (-db gain) Ratings min typ max Unit 8 mvrms db sensitivity db L dbμ, % mod. output, -db input dbμ Effective sensitivity Qs Input for /N = db dbμ FM-IF monaural characteristics fc =.7MHz, fm = khz, % mod. Quiescent current I CCO (FM) No input 8 ma Demdulator output V O dbμ, pin output 9 mvrms ignal-to-noise ratio /N dbμ, pin output 7 db Total harmonic distortion (mono) THD dbμ, pin output.. % db sensitivity db L dbμ, % mod. output, -db input dbμ TU-LED sensitivity D-ON dbμ FM-IF stereo characteristics fc =.7MHz, fm = khz, L R = 9%, pilot = % eparation EP dbμ, L-mod, pin /pin 7 output 5 db T-LED sensitivity T-ON dbμ, pilot modulation for pin 8 voltage <.5V.5.5. % Total harmonic distortion (main) THD dbμ, main modulation, pin output.5. % AM characteristics fc = khz, fm = khz, % mod. Quiescent current I CCO (AM) No input ma Demdulator output ignal-to-noise ratio Total harmonic distortion V O dbμ, pin output 8 7 mvrms V O 8dBμ, pin output 5 85 mvrms /N dbμ, pin output 5 db /N 8dBμ, pin output 7 5 db THD 8dBμ, pin output.5. % THD 7dBμ, pin output.5.5 % TU-LED sensitivity D-ON dbμ Package Dimensions unit : mm (typ) 7B..5min..9 max (.5) (.7).78.8 ANYO : DIP(mil) No.587-/

3 LA88 Block Diagram B.P.F. AM FM MN T R-OUT L-OUT DET FM Ant PHAE COMP DECODER VCC FM OC GND FM RF TRIG T-W VCO FF FF FF FM MIX PILOT DET DET -METER AM MIX AGC AM-IF T LED FM-IF TUN LED V-AGC V-M VCC GND AM OC AM RF REG V CC AM Ant FM T.7M 5k AM/FM TUN No.587-/

4 LA88 Test Circuit amp L.P.F amp L.P.F MN T B.P.F. AM FM.7μF μF pf FM ant-input (98MHz) db AM ant-input (khz) Ω R-OUT 5.V 5pF.7μF Ω pf Ω pf.μf.μf A-9.kΩ 8pF 8pF pf 8pF pf 5pF FM-OC A-5 FM-RF A-9 pf 5Ω 9mH V-REG μf FM T AM/FM D kω.kω.7m pf kω AM-IFT YD-7- FM-IFT YT- μf.7μf FM-DET YT- AM-OC HW-55.7μF μf Ω V-M VCC =.5V FM IF-input (.7MHz) 5Ω.7μF FM-Vosc (8.7MHz) K5 L-OUT kω LA88 No.587-/

5 LA88 Pin Description and Quiescent Voltage at VCC =.5V Quiescent voltage (V) Pin No. Pin function Description AM FM AM RF input.. AM antenna coil connected between pins and (reg). Equivalent circuit Reg.. Vreg =.V AM-OC.5.5 Oscillator coil connected between pins and (V CC ). V CC.5.5 AM/FM-IN/MPX block V CC 5 FM mixer output.5.5 Mixer coil connected between pins 5 and (V CC ). 5 GND AM/FM-IN/MPX section ground 7 AM mixer output.5.5 Mixer coil connected between pins 7 and (V CC ). 7 8 Tu-LED output.5.5 Active low Open-collector output can directly drive LED (I C max = ma) 8 Continued on next page. No.587-5/

6 Continued from preceding page. Pin No. Pin function 9 T-LED output and AM-IF output LA88 Quiescent voltage (V) Description AM FM.5.5 Active low Open-collector output can directly drive LED (I C max = ma) In AM operation, AM-IF signal (5kHz) is output here. Equivalent circuit 9 FM-IF input.. R IN = Ω RIN AM-IF input.. R IN = kω RIN AM-AGC output and FM meter output.7. Internal load resistance R =.kω R FM detector.5.5 Detector coil connected between pins and (V CC ). Pilot tone detector filter and forced mono switching.9.8 Mono mode is forced on by connecting pin to ground. 5 Phase comparator filter and AM/FM switching.8 FM reception mode is enabled when pin 5 is open. AM reception mode is enabled when pin 5 is connected to ground. 5 7 L output R output.. R OUT = 7.5kΩ ROUT 7 Continued on next page. No.587-/

7 LA88 Continued from preceding page. Quiescent voltage (V) Pin No. Pin function AM FM 8 MPX input.. R IN = 5kΩ Description 8 Equivalent circuit R IN 9 FM detector output and AM detector output.5.5 Output impedance AM : R OUT = 5kΩ FM : R OUT = 5Ω Capacitance between pin 9 and ground should be optimzed for the best separation characteristics. R OUT (FM) 9 R OUT (AM) FM-OC.5. Colpitts oscillator circuit FM oscillator coil is connected to pin. V CC.5. FM-FE block V CC Power is supplied from pin (V CC ) via external resistor (Ω). R FM-RF output.5. FM RF coil is connected between pins and (V CC ). FM-RF input. R IN =.8kΩ GND FM-FE brock ground No.587-7/

8 LA88 Coil specifications (bottom view) FM-BPF : A-9 (umida) 88 to 8MHz FM-RF : A-9 (umida).mm dia., air core,.mm wire, / T FM-OC : A-5 (umida).mm dia., air core,.mm wire, / T FM-Mix : A-5 (umida) AM-OC : A-8 (umida) - T - 7T - T - 7T.UEW fo =.7MHz.UEW fo = 79kHz Qo 5 With pf internal capacitor Qo 8 L = μh FM-Det : A- (umida) AM-IFT : A- (umida) - T - T.UEW - 9T fo =.7MHz Qo 7 - T.UEW With 8pF internal capacitor fo = 5kHz Qo 5 With 8pF internal capacitor FM-IF filter : FE.7M (Murata) AM-IF filter : FU5B (Murata) Poly-varicon : FT-7 (Toko) or PVC-KTL (Mitsumi) MW bar antenna : TYA-5 (Mitsumi) - 8T - 9T fo = 79kHz Qo L = μh FM-Mix : YT- (Mitsumi) for DUT AM-OC : HW-55 (Mitsumi) for DUT - T - T - 8T - 9T.UEW fo =.7MHz - 8T Qo 8 Qo 8 With 5pF internal capacitor L = 7μH FM-Det : YT- (Mitsumi) for DUT AM-IFT : YD-7- (Mitsumi) for DUT - T - 58T fo =.7MHz - 7T Qo 9 With 8pF - 9T fo = 5kHz internal capacitor FU5B With 8pF internal capacitor No.587-8/

9 ample Application Circuit LA88 V-M VCC =.5V MN T AM FM B.P.F..7μF Ω 9pF V-REG μf FM T 8pF.kΩ FM-DET A- FM antenna.7μf Ω pf Ω pf.μf.μf A-9.kΩ 8pF 8pF 8pF 8pF pf 5pF FM-OC A-5 FM-RF A-9 pf LA88 AM antenna TYA-5 kω AM/FM D kω AM-IFT.7MHz A- 5KHz FM-IFT A-5 7pF AM-OC A-8 μf.7μf.7μf μf No.587-9/

10 LA88 Output -- dbm Qs,Ls,D -- dbμ /N -- db Quiescent current, I CCO -- ma THD = 75kHzdev --9 Noise -- THD = 5kHzdev ANT input -- dbμ ANT input -- dbμ Power supply voltage, V CC -- V Power supply voltage, V CC -- V FM characteristics VCC =.5V fc = 98MHz fm = khz,.5khzdev ignal FM VCC characteristics fc = 98kHz VIN = dbμ fm = khz,.5khzdev Ls Qs V CC = V V IN = 8dBμ fm = khz D AM Out /N VO FM VCC characteristics Output, V O -- dbm Total harmonic distortion, THD -- % Total harmonic distortion, THD -- % Qs,Ls,D -- dbμ /N -- db VCC =.5V fc = 98MHz fm = khz fc = 98MHz VIN = dbμ fm = khz FM characteristics FM VCC characteristics THD = 75kHzdev THD =.5kHzdev fc =.5kHz V IN = dbμ fm = khz,.5khzdev Ls FM characteristics D Qs VM /N meter voltage, V M -- V Total harmonic distortion, THD -- % Power supply voltage, V CC -- V Reception frequency, fr -- khz 7 5 MPX characteristics V CC =.5V V CC =.5V 7 V IN = dbμ V IN = dbμ 5 fc = 98MHz L R = 9% fc = 98MHz 5 L R = 9% PILOT = % PILOT = % UB T MONO MAIN eparation, ep -- db MPX characteristics ep-r ep-l Modulation frequency, fm -- khz Modulation frequency, fm -- khz No.587-/

11 LA88 Output -- dbm AM characteristics VCC =.5V fc = MHz fm = khz, %mod ignal Noise AGC voltage, V AGC -- V VCC =.5V fc = MHz AM characteristics --9 Total harmonic distortion, THD -- % ensitity -- db/m /N -- db ANT input -- db/m ANT input -- db/m 5 8 ANT input -- db/m AM VCC characteristics ANT input -- db/m Power supply voltage, V CC -- V Power supply voltage, V CC -- V 7 VCC =.5V fc = MHz fm = khz fc = MHz V IN = 7dB/m fm = khz, %mod V CC =.5V V IN = 7dB/m fm = khz, %mod AM characteristics Maximum sensitivity (input for mv output) THD = 8% THD = % /N D AM characteristics V O Qs Detector output, V O -- dbm Output -- dbm Total harmonic distortion, THD -- % 5 VCC =.5V fc = 9kHz fm = khz, %mod fc = MHz V IN = 7dB/m fm = khz, %mod AM characteristics IF Beat AM VCC characteristics ignal ICCO THD = 8% THD = % Quiescent current, I CCO -- ma ensitity -- db/m /N -- db 5 /N D Qs Maximum sensitivity (input for mv output) 8 8 Reception frequency, fr -- khz No.587-/

12 LA88 ANYO emiconductor Co.,Ltd. assumes no responsibility for equipment failures that result from using products at values that exceed, even momentarily, rated values (such as maximum ratings, operating condition ranges, or other parameters) listed in products specifications of any and all ANYO emiconductor Co.,Ltd. products described or contained herein. ANYO emiconductor Co.,Ltd. strives to supply high-quality high-reliability products, however, any and all semiconductor products fail or malfunction with some probability. It is possible that these probabilistic failures or malfunction could give rise to accidents or events that could endanger human lives, trouble that could give rise to smoke or fire, or accidents that could cause damage to other property. When designing equipment, adopt safety measures so that these kinds of accidents or events cannot occur. uch measures include but are not limited to protective circuits and error prevention circuits for safe design, redundant design, and structural design. In the event that any or all ANYO emiconductor Co.,Ltd. products described or contained herein are controlled under any of applicable local export control laws and regulations, such products may require the export license from the authorities concerned in accordance with the above law. No part of this publication may be reproduced or transmitted in any form or by any means, electronic or mechanical, including photocopying and recording, or any information storage or retrieval system, or otherwise, without the prior written consent of ANYO emiconductor Co.,Ltd. Any and all information described or contained herein are subject to change without notice due to product/technology improvement, etc. When designing equipment, refer to the "Delivery pecification" for the ANYO emiconductor Co.,Ltd. product that you intend to use. Information (including circuit diagrams and circuit parameters) herein is for example only; it is not guaranteed for volume production. Upon using the technical information or products described herein, neither warranty nor license shall be granted with regard to intellectual property rights or any other rights of ANYO emiconductor Co.,Ltd. or any third party. ANYO emiconductor Co.,Ltd. shall not be liable for any claim or suits with regard to a third party's intellctual property rights which has resulted from the use of the technical information and products mentioned above. This catalog provides information as of June, 9. pecifications and information herein are subject to change without notice. P No.587-/