92706 / 12506 ms ot b8-7095 no.a0229-1/6 LA1787NM overview the LA1787NM integrates the six circuit blocks required in a car tuner on a single chip. features ? improved noise prevention and reduction. - excellent three-signal characteristics equivalent to the sanyo la1193 fm front end ic. - improved medium and weak field noise canceller characteristics provide superb listenability. - improved separation. - built-in anti-birdie filter. - improved am and fm temperature characteristics. - excellent fm s-meter linearity. - modified noise canceller circuit achieves improved noise rejection. ? improved am adjacent channel characteristics ( ? 40khz). ? double conversion am tuner (upconversion). - fewer external components required than earlier double conversion tuners, no crystal required (when used as a pair with the lc72144). ? built-in fm if circuit sample-to-sample varia tions correction circuit fo r the fm if circuit. (the sd, keyedagc, mute on, adj, mute att, snc, and hcc pins can all used fixed resistors.) ? improved fm separation te mperature characteristics. ? this product inherits the block arrangement of the la1780m, and allows pin compatible design in end products. ? the LA1787NM adds an fm s-meter shifter function to the la1787m. functions ? fm front end. ? multiplexer. ? fm if. ? am upconverter. ? noise canceller. ? fm/am switch. ? mrc. ordering number : ena0229 monolithic linear ic single-chip car radio system ic any and all sanyo semiconductor products described or contained herein do not have specifications that can handle applications that require extremely high levels of reliability, such as life-support systems, aircraft's control systems, or other applications whose failure can be reasonably expected to result in serious physical and/or material damage. consult with your sanyo semiconductor representative nearest you before using any sanyo semiconductor products described or contained herein in such applications. sanyo semiconductor 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 products described or contained herein.
LA1787NM no.a0229-2/6 specifications maximum ratings at ta = 25 c parameter symbol conditions ratings unit v cc 1 max pins 6, 40, and 61 9.0 v maximum supply voltage v cc 2 max pins 7, 45, 54, 59, and 60 12 v allowable power dissipation pd max ta 55 c 950 mw operating temperature topr -40 to +85 c storage temperature tstg -40 to +150 c recommended operating conditions at ta = 25c parameter symbol conditions ratings unit v cc pins 6, 7, 40, 45, 54, 59, 60, and 61 8.0 v recommended supply voltage v cc st ind pins 26 5 v operating supply voltage range v cc op 7.5 to 9.0 v operating characteristics at ta = 25c, v cc = 8.0v, in the specified test circuit, fm if input * : note that these tests are made using an ic socket, models ic-51-0644-824 and ks8277 (yam aichi electronics co., ltd.). switch settings ratings parameter symbol conditions 12345678910 min typ max unit fm characteristics - fm if input quiescent current i cco -fm no input, i40+i45+ i54+i59+i60+i61 on b off b on off off on 60 94 110 ma demodulated output v o -fm 10.7mhz, 100db , 1khz, 100% modulation, the pin 15 output on b off b on off off on 205 310 415 mvrms pin 31 demodulated output v o -fm31 10.7mhz, 100db , 1khz, 100% modulation, the pin 31 output on b off b on off off on 190 295 380 mvrms channel balance cb 10.7mhz, 100db , 1khz, pins 15, 16 ratio on b off b on off off on -1 0 +1 db total harmonic distortion thd-fmmono 10.7mhz, 100db , 1khz, 100% modulation, pin 15 on b off b on off off on 0.3 1 % signal-to-noise ratio (if) s/n-fm if 10.7mhz, 100db , 1khz, 100% modulation, pin 15 on b off b on off off on 75 82 db am rejection ratio (if) amr if 10.7mhz, 100db , 1khz, fm = 1khz, pin 15 when 30% am on b off b on off off on 55 68 db muting attenuation (1) att-1 10.7mhz, 100db , 1khz, the pin 15 attenuation when v33 is changed from 0 to 2v on b off b on off off on 5 10 15 db muting attenuation (2) att-2 10.7mhz, 100db , 1khz, the pin 15 attenuation when v33 is changed from 0 to 2v * 1 on b off b on on off on 15 20 25 db muting attenuation (3) att-3 10.7mhz, 100db , 1khz, the pin 15 attenuation when v33 is changed from 0 to 2v * 2 on b off b on on off on 28 33 38 db separation separation 10.7mhz, 100db , l+r = 90%, pilot = 10%, the pin 15 output ratio on b off b on off off on 30 40 db stereo on level st-on the pilot modulation such that v26 is less than 0.5v on b off b on off off on 2.1 4.1 6.1 % stereo off level st-off the pilot modulation such that v26 is less than 3.5v on b off b on off off on 1.3 3.2 % main distortion thd-main l 10.7mhz, 100db , l+r = 90%, pilot = 10%, pin 15 on b off b on off off on 0.3 1.2 % pilot cancellation pcan 10.7mhz, 100db , pilot = 10%, pin 15 signal the pilot level leakage, din audio on b off b on off off off /on 20 30 db snc output attenuation attsnc 10.7mhz, 100db , l-r = 90%, pilot = 10%, v28 = 3v 0.6v, pin 15 on b off b on off off on 1 5 9 db continued on next page.
LA1787NM no.a0229-3/6 continued from preceding page. switch settings ratings parameter symbol conditions 12345678910 min typ max unit hcc output attenuation (1) atthcc-1 10.7mhz, 100db , 10khz, l+r = 90%, pilot = 10%, v29 = 3v 0.6v, pin 15 on b off b on off off on 0.5 4.5 8.5 db hcc output attenuation (2) atthcc-2 10.7mhz, 100db , 10khz, l+r = 90%, pilot = 10%, v29 = 3v 0.1v, pin 15 on b off b on off off on 6 10 14 db input limiting voltage vi-lim 100db , 10.7mhz, 30% modulation the if input such that the output is -3db down referenced to the input on b off b on off off on on 33 40 47 db muting sensitivity vi-mute the if input level when v33 = 2v, no modulation on b off b on off off on 27 35 43 db sd sensitivity (1) sd-sen1fm the if input such that the if counter buffer output goes to the on state (100mvrms or higher) on b off b off off off off on 54 62 70 db sd sensitivity (2) sd-sen2fm the if input such that the sd pin goes to the on state, no modulation on b off b on off off off on 54 62 70 db if counter buffer output v ifbuff-fm 10.7mhz, 100db , no modulation, the pin 23 output on b off b off off off off on 130 200 270 mvrms v sm fm-1 no input, the pin 24 dc output, no modulation on b off b off off off on 0.0 0.1 0.3 v v sm fm-2 50db , the pin 24 dc output, no modulation on b off b off off off on 0.4 1.0 1.5 v v sm fm-3 70db , the pin 24 dc output, no modulation on b off b off off off on 2.0 2.7 3.5 v s-meter output v sm fm-4 100db , the pin 24 dc output, no modulation on b off b off off off on 4.7 5.5 6.2 v muting attenuation bw-mute 100db, the bandwidth when v33 = 2v, no modulation on b off b off off off on 150 220 290 khz muting drive output v mute -100 100db, 0db, the pin 33 dc output, no modulation on b off b off off off on 0.00 0.03 0.20 v fm front end mixer input n-agc on input vnagc 83mhz no modulation, the input such that pin 2 becomes 2.0v or lower on a on b on off off 81 88 95 db w-agc on input vwagc 83mhz no modulation, the input such that pin 2 becomes 2.0v or lower (when the keyed agc is 4.0v) on a on b on off off 104 110 116 db conversion gain a. v 83mhz, 80db, no modulation, the fe cf output on a on b on off off 19 30 48 mvrms oscillator buffer output v osc bufffm no input on a on b on off off 85 110 165 mvrms noise canceller block - nc input (pin 30) gate time gate f = 1khz, 1 s, with a 100mvp-o pulse input on off a on off off 55 s noise sensitivity sn the 1khz 1 s pulse input level such that noise canceller operation starts on off a on off off 40 mvp-o noise canceller effect sn-nc the pulse exclusion effect due to noise canceller operation. repetition frequency for a 1 s pulse. the ratio of the fm mode pin 15 output referenced to the pin 15 output in 10khz 150mvp-o am mode. on/ off off a on off off 5 multipath rejection circuit - mrc input (pin 27) mrc output v mrc v24 = 5v on off b on off off 2.2 2.3 2.4 v mrc operating level mrc-on the pin 32 input level such that pin 24 = 5v and pin 27 = 2v, f = 70khz on off b on off off 10 15 20 mvrms am characteristics - ant in input practical sensitivity s/n-30 1mhz, 30db, fm = 1khz, 30% modulation, pin 15 off off b on on 20 db detection output v o -am 1mhz, 74db, fm = 1khz, 30% modulation, pin 15 off off b on on 130 195 270 mvrms continued on next page.
LA1787NM no.a0229-4/6 continued from preceding page. switch settings ratings parameter symbol conditions 12345678910 min typ max unit pin 31 detection output v o -am31 1mhz, 74db, fm = 1khz, 30% modulation, pin 31 off off b on on 110 175 230 mvrms agc-f.o.m v agc-fom 1mhz, 74db , referenced to the output, the input width such that the output falls by 10db, pin 15 off off b on on 51 56 61 db signal-to-noise ratio s/n-am 1mhz, 74db, fm = 1khz, 30% modulation off off b on on 47 52 db total harmonic distortion thd-am 1mhz, 74db, fm = 1khz, 80% modulation off off b on on 0.3 1 % v sm am-1 no input off off b on on 0.0 0.2 0.5 v s-meter output v sm am-2 1mhz, 130db, no modulation off off b on on 4.8 6.0 7.3 v oscillator buffer output v osc buffam1 no input, the pin 15 output off off b on on 185 230 mvrms w-agcsen1 1.4mhz, the input when v46 = 0.7v off off b on on 92 98 104 db wideband agc sensitivity w-agcsen2 1.4mhz, the input when v46 = 0.7v (during a seek) off off b on on 83 89 95 db sd-sen1am 1mhz, the ant input level such that the if counter output turns on. off off b off off 24 30 36 db sd sensitivity sd-sen2am 1mhz, the ant input level such that the sd pin goes to the on state. off off b off off 24 30 36 db if buffer output v ifbuff -am 1mhz, 74db non-mod, the pin 23 output off off b off off 200 290 mvrms *1: when the value of the resist or between pin 58 and ground is 200k ? . *2: when the value of the resistor between pin 58 and ground is 30k ? . package dimensions unit : mm 3159a
LA1787NM no.a0229-5/6 block diagram and test circuit pca00627 if limiter amplifier
LA1787NM ps no.a0229-6/6 specifications of any and all sanyo semiconductor 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. sanyo semiconductor co., ltd. strives to supply high-quality high-reliability products. however, any and all semiconductor products fail with some probability. it is possible that these probabilistic failures could give rise to accidents or events that could endanger human lives, that could give rise to smoke or fire, or 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 products (including technical data,services) described or contained herein are controlled under any of applicable local export control laws and regulations, such products must not be exported without obtaining 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 permission 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 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. sanyo semiconductor believes information herein is accurate and reliable, but no guarantees are made or implied regarding its use or any infringements of intellectual property rights or other rights of third parties. this catalog provides information as of january, 2006. specifications and information herein are subjec t to change without notice.
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