LA1837. Specifications. Monolithic Linear IC For Home Stereo IC with Electronic Tuning Support Single-Chip IC. Maximum Ratings at Ta = 25 C

Transcription

1 Ordering number : EN88C LA18 Monolithic Linear IC For Home Stereo IC with Electronic Tuning Support Single-Chip IC Overview The LA18 is a single-chip / IF and MPX IC that supports electronic tuning and was developed for use in home stereo systems. It is optimal for use in automatic station selection systems that use the SD and IF counting techniques. Features On-chip MPX VCO (no external components required). Adjacent channel interference rejection function (third and fifth order). Supports both the SD and the IF counting techniques. The and SD sensitivities can be set independently. The and output levels can be set independently. Improved practical sensitivity and high-input distortion characteristics. Functions : -IF : MPX : RF amplifier, mixer, oscillator, IF amplifier, detector AGC, oscillator buffer, S-meter, narrowband SD, IF buffer IF amplifier, quadrature detector, S-meter, Scurve detector, IF buffer output PLL stereo decoder, stereo display, forced mono, VCO stop, post amplifier, audio muting, adjacent channel interference rejection function Specifications Maximum Ratings at Ta = C Parameter Symbol Conditions Ratings Unit Maximum supply voltage max 1 V Allowable power dissipation Pd max Ta C mw Operating temperature Topr - to C Storage temperature Tstg - to 1 C Any and all SANYO Semiconductor 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. Specifications of any and all SANYO Semiconductor 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. 19 SY / 9 MS PC/89HA(OT) No.88-1/9

2 LA18 Operating Conditions at Ta = C Parameter Symbol Conditions Ratings Unit Recommended supply voltage 9 V Operating supply voltage range op to 11 V Electrical Characteristics at Ta = C, VCC = 9V, in the specified test circuit Parameter Symbol Conditions Mono characteristics fc = 1.MHz, fm = 1kHz, with the coil adjusted so that V AFC - V REG = V Ratings min typ max Current drain I CCO- With no input 18 1 ma Demodulation output V O 1dBμ, 1% mod. The pin 1 output 11 1 mvrms Channel balance C.B-mono 1dBμ, 1% mod. The pin 1 output/pin 1 output Total harmonic distortion (mono) Unit db THD (1) 1dBμ, 1% mod. The pin 1 output. 1. % THD () 1dBμ, 1% mod. The pin 1 output 1. % Signal-to-noise ratio S/N 1dBμ, 1% mod. The pin 1 output 8 db rejection ratio R 1dBμ, 1% mod. The pin 1 output db Limiting input voltage -dbl.s. 1dBμ, 1% mod. Referenced to the output. The input such that the output is down db. 8 dbμ LED sensitivity SD On- 1 9 dbμ LED bandwidth SD BW 1dBμ khz IF count buffer output V IFBuff- 1dBμ, The pin 1 output mvrms S-meter output V SM-(1) dbμ, The pin 11 output.1. V V SM-() 1dBμ, The pin 11 output... V Muting attenuation Mute-Att 1dBμ, 1% mod. The pin 1 output 8 db stereo characteristics fc = 1.MHz, 1dBμ, fm = 1kHz, L R = 9%, pilot = 1% Separation (left) Sep L L mod. The pin 1 output/pin 1 output db Separation (right) Sep R R mod. The pin 1 output/pin 1 output db Stereo on level ST ON The pilot modulation such that V is under.v. 1.. % Stereo off level ST OFF The pilot modulation such that V is over.v. 1. % Total harmonic distortion (main) THD-main L R mod. The pin 1 output. 1. % Adjacent channel interference rejection ratio Brej-rd fs = 11kHz, V S = 9%, Pilot = 1%, The pin 1 output vs. the L-R mod. 1kHz db demodulated output Brej-th fs = 189kHz, V S = 9%, Pilot = 1%, The pin 1 output vs. the L-R mod. 1kHz demodulated output db characteristics fc = 1kHz, fm = 1kHz Current drain I CCO- With no input 1 ma Detector output V O(1) dbμ, % mod. The pin 1 output 1 18 mvrms Signal-to-noise ratio Total harmonic distortion (mono) V O() 8dBμ, % mod. The pin 1 output mvrms S/N (1) dbμ, % mod. The pin 1 output 18 db S/N () 8dBμ, % mod. The pin 1 output 9 db THD (1) 8dBμ, % mod. The pin 1 output. 1. % THD () 8dBμ, 8% mod. The pin 1 output 1.. % LED sensitivity SD On- 1 dbμ Local oscillator buffer output V - With no input. The pin output 11 1 mvrms IF counter buffer output V IFBuff- 8dBμ, no modulation. The pin 1 output 1 mvrms ST-IF output V STIF- 8dBμ, no modulation. The pin output 1 8 mvrms S-merer output V SM- dbμ, no modulation.. V No.88-/9

3 Package Dimensions unit : mm (typ) 19A.9 MAX. (.).1 MIN (1.) LA SANYO : DIPSD(mil) Allowable power dissipation, Pd max -- mw Pd max Ta Ambient temperature, Ta -- C Block Diagram BUFF SD ADJ VT SD BAND-W RF AGC L.P.F L.P.F -STEREO L/R-INPUT L R L-OUT R-OUT ALC BUFF REG MIX RF.P AGC P-DET φ rd th DECODER ANTI-BIRDIE STEREO SW MUTE SD COMP IF S-METER DET VCO khz FF 8k FF π 19k FF 19k θ PILOT DET S-METER IF S-CURVE DET / IF-BUFF TUNING DRIVE STEREO DRIVE GND IN (1.MHz) IFT TU-LED ST-LED -IF NARROW SD V SM V SM (SD-ADJ) / IF-BUFF MUTE ST MONO Top view No.88-/9

4 Test Circuit BUFF (1.MHz) 1pF 9pF.1kΩ -IN (1MHz) pf T1 Ω.μF.μF REG μf.μf 9mH 1kΩ.μF AFC μf LA18 18kΩ 91pF LA18.1μF 1μF.μF L.P.F.μF L.P.F 1μF.kΩ 1μF.kΩ L-OUT R-OUT IN SD ST (1.MHz).μF khz V SM V SM Ω Ω T.μF μf 8kΩ 1pF -ST 8kΩ.μF 1Ω 1μF T 1Ω.kΩ ( ).μf.μf kω 1μF 1kΩ NORMAL SEEK1pF V DD IF-BUFF kω 1μF.μF kω MONO STEREO kω 1μF 9.V Top view Pin Functions Pin No. Pin function Pin voltage (V) Pin description Equivalent circuit 1 IF input Vreg Input impedance r i = Ω 1 mixer output Connect the mixer coil between this pin and. IF input bypass Vreg Also functions as the MPX regulator filter. See pin 1. IF input Vreg Input impedance r i = kω GND V TU-LED ST-LED -IF output Active low Open collector output stereo IF output (pin ) The current input must not exceed 1μA. 8 9 detector Recommended detector coil : BEAS-91Z (The Toko Electric Corporation) 9 1 narrow band CF connection 1.V Recommended narrow band CF: BFU CN (Murata Mfg. Co., Ltd.) If the narrow band SD is not used, bypass this circuit with a Ω resistor and a.μf capacitor connected in series. 1 Continued on next page. No.88-/9

5 LA18 Continued from preceding page. Pin No. Pin function Pin voltage (V) Pin description Equivalent circuit 11 -S-meter output V R L = 8kΩ 11 1 S-meter output SD sensitivity adjustment V () The SD sensitivity is adjusted with the value of the external resistor connected between this pin and ground and IF buffer output, output control switch (mute switch) V V1. V : Reception state 1. V V1. V : IF buffer output turned on V1. V : IF buffer output and muting are turned on 1 1 Phase comparator low-pass filter (/ switching) -1. () V () Connecting this pin to ground through a resistor sets the IC to mode. Resistor value limits :.kω (when = V).9kΩ (8V).1kΩ (9V).kΩ (1V).kΩ (11V) 1 1 Pilot detector low-pass filter (forced mono) (VCO stop) -1. If a current of μa or greater flows from this pin, the system is forced to mono. Connecting this pin to ground stops the VCO. The resistor limit values are the same as for pin Post amplifier input and output Vreg Vreg Output impedance r o = Ω Pin 1 : right output, pin 1 : left output Inverting inputs Pin 18 : right input, pin 19 : left input R NF = kω MOX output.v.v Output impedance r o =.kω Pin : right de-emphasis Pin 1 : left de-emphasis 1 MPX input.9v Input impedance r i = kω demodulator output.8v ().8V () Output impedance r o =.kω The separation can be modified by inserting a capacitor between this pin and ground. Set V O sub/v O main to be about db. detector output V ().V () AGC V ().V () Output impedance r o =.kω The frequency characteristics can be modified by adjusting the time constants of the circuits between this pin and pin, and between this pin and ground. The built-in load resistor R = 11kΩ. Continued on next page. No.88-/9

6 LA18 Continued from preceding page. Pin No. Pin function Pin voltage (V) Pin description Equivalent circuit AFC Vreg The SD bandwidth can be modified with the external resistor connected between this pin and pin 8. RF input Vreg Use this pin at the same potential as pin 8. 8 REG Vreg Vreg =.V 8 9 Vreg Use an oscillator coil between this pin and pin 8. 9 Oscillator buffer output, SD sensitivity adjustment 1.V () 1.V () The SD sensitivity can be modified with the external resistor connected between this pin and ground. Output impedance r o = Ω Coil specifications (bottom view) oscillator (for the DUT) HW- (Mitsumi Electric Co., Ltd.) IFT YD-1-1 (Mitsumi Electric Co., Ltd.) 1 - T - 9T -1 8T Qo 8 L = μh S 1 S YD-1 SFUB 1-8T - T - 9T fo = khz Qo = 11 Includes an internal 18pF capacitor. SFUB included. detector BEAS-91Z (The Toko Electric Corporation) -1 T f = 1.MHz Qo = Includes an internal 8pF capacitor. S 1 No.88-/9

7 LA18 Separation, Sep -- db Total harmonic distortion, THD -- % Output -- dbm Overall Characteristics. 1 V IN = 1dBμ fm = 1kHz, khzdev Out Out Noise THD Band Characteristics Total harmonic distortion, THD -- % S-meter output, V SM -- V Total harmonic distortion, THD -- % THD/VSM Characteristics = 9V fc = 1.MHz fm = 1kHz, khzdev V SM = 9V --8 fc = 1.MHz THD fm = 1kHz, khzdev Input -- dbμ Input -- dbμ Distortion vs. Frequency Characteristics Frequency fc -- MHz Frequency, freq -- khz Separation vs. Frequency Characteristics Adjacent Channel Interference Rejection Ratio IF = 1.MHz, 1dBμ, khzdev --1 V S = 9% PILOT = 1% -- Referenced to the L-R demodulated output. LA18 -- Sep-R Sep-L Vobat -- db MAIN LA18 SUB ST MONO --8 Capture range -- % Frequency, freq -- khz Frequency, fs -- khz 1 C R Capture Range Characteristics CR - SD on -- dbμ 9 1 SD Sensitivity Adjustment Characteristics Pilot -- mv Rsdadj -- kω No.88-/9

8 LA18 SD Sensitivity Adjustment Characteristics Overall Characteristics Out SD BW -- khz Output -- dbm % Total harmonic distortion, THD -- S-meter output, V SM -- V -- dbv Output voltage, VO -- 1 VCC = 9V fc = 1MHz -- fm = 1kHz, %mod Noise --8 S/N (8dBμ) = 8dB Radj -- kω Input -- dbμ. VCC = 9V, fc = 1MHz. fm =1kHz, %mod S/N (8dBμ) = 8dB THD / VSM Characteristics VSM THD = 8%mod R.1μF Detector Output Frequency Characteristics (1) R C. -- THD = %mod Input -- dbμ Frequency, fm -- khz Detector Output Frequency Characteristics () Output voltage, V O -- dbv C =.μf Frequency, fm -- khz Ambient temperature, Ta -- C 9 8 R = 1kΩ Separation vs. Ambient Temperature Characteristics S/N Mono S/N Stereo R = kω R = 18kΩ Total harmonic distortion, THD -- % 1. C =.1μF C =.μf Distortion vs. Ambient Temperature Characteristics THD sub THD Mono THD st THD Main db Separation, Sep -- S/N -- db Sep-R Sep-L Ambient temperature, Ta -- C No.88-8/9

9 LA18 SANYO Semiconductor 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 SANYO Semiconductor Co.,Ltd. products described or contained herein. SANYO Semiconductor 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. Such 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 SANYO Semiconductor 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 SANYO Semiconductor 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 Specification" for the SANYO Semiconductor 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 SANYO Semiconductor Co.,Ltd. or any third party. SANYO Semiconductor 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 July, 9. Specifications and information herein are subject to change without notice. PS No.88-9/9