Ordering number : ENA0229 Monolithic Linear IC LA1787NM Single-Chip Car Radio System IC 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 variations correction circuit for the FM IF circuit. (The SD, KEYEDAGC, MUTE ON, ADJ, MUTE ATT, SNC, and HCC pins can all used fixed resistors.) • Improved FM separation temperature 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. 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. 92706 / 12506 MS OT B8-7095 No.A0229-1/6 LA1787NM Specifications Maximum Ratings at Ta = 25°C Parameter Symbol Maximum supply voltage VCC1 max VCC2 max Allowable power dissipation Pd max Conditions Ratings Pins 6, 40, and 61 Unit 9.0 Pins 7, 45, 54, 59, and 60 Ta ≤ 55°C V 12 V 950 mW Operating temperature Topr -40 to +85 °C Storage temperature Tstg -40 to +150 °C Recommended Operating Conditions at Ta = 25°C Parameter Symbol Recommended supply voltage VCC VCCST IND Operating supply voltage range Conditions Ratings Pins 6, 7, 40, 45, 54, 59, 60, and 61 Unit 8.0 V 5 V 7.5 to 9.0 V Pins 26 VCC op Operating Characteristics at Ta = 25°C, VCC = 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 (Yamaichi Electronics Co., Ltd.). Parameter Symbol Conditions Switch settings 1 2 3 4 5 6 7 Ratings 8 9 10 min typ max Unit FM Characteristics - FM IF Input Quiescent ICCO-FM No input, I40+I45+I54+I59+I60+I61 ON B OFF B ON OFF OFF ON 60 94 110 mA 10.7MHz, 100dBµ, 1kHz, ON B OFF B ON OFF OFF ON 205 310 415 mVrms ON B OFF B ON OFF OFF ON 190 295 380 mVrms ON B OFF B ON OFF OFF ON -1 0 +1 dB ON B OFF B ON OFF OFF ON 0.3 1 % ON B OFF B ON OFF OFF ON 75 82 dB ON B OFF B ON OFF OFF ON 55 68 dB ON B OFF B ON OFF OFF ON 5 10 15 dB ON B OFF B ON ON OFF ON 15 20 25 dB ON B OFF B ON ON OFF ON 28 33 38 dB ON B OFF B ON OFF OFF ON 30 40 ON B OFF B ON OFF OFF ON 2.1 4.1 ON B OFF B ON OFF OFF ON 1.3 3.2 ON B OFF B ON OFF OFF ON ON B OFF B ON OFF OFF OFF current Demodulated VO-FM output Pin 31 100% modulation, the pin 15 output VO-FM31 demodulated 10.7MHz, 100dBµ, 1kHz, 100% modulation, the pin 31 output output Channel CB balance Total harmonic THD-FMmono 10.7MHz, 100dBµ, 1kHz, distortion Signal-to-noise 100% modulation, pin 15 S/N-FM IF ratio (IF) AM rejection 10.7MHz, 100dBµ, 1kHz, 100% modulation, pin 15 AMR IF ratio (IF) Muting 10.7MHz, 100dBµ, 1kHz, Pins 15, 16 ratio 10.7MHz, 100dBµ, 1kHz, fm = 1kHz, pin 15 when 30% AM Att-1 attenuation (1) 10.7MHz, 100dBµ, 1kHz, The pin 15 attenuation when V33 is changed from 0 to 2V Muting Att-2 attenuation (2) 10.7MHz, 100dBµ, 1kHz, The pin 15 attenuation when V33 is changed from 0 to 2V *1 Muting Att-3 attenuation (3) 10.7MHz, 100dBµ, 1kHz, The pin 15 attenuation when V33 is changed from 0 to 2V *2 Separation Separation 10.7MHz, 100dBµ, L+R = 90%, dB pilot = 10%, the pin 15 output ratio Stereo on level ST-ON The pilot modulation such that V26 is 6.1 % less than 0.5V Stereo off level ST-OFF The pilot modulation such that V26 is % less than 3.5V Main distortion THD-Main L 10.7MHz, 100dBµ, L+R = 90%, 0.3 1.2 % pilot = 10%, pin 15 Pilot PCAN cancellation 10.7MHz, 100dBµ, pilot = 10%, Pin 15 signal 20 30 1 5 dB /ON The pilot level leakage, DIN audio SNC output attenuation AttSNC 10.7MHz, 100dBµ, L-R = 90%, ON B OFF B ON OFF OFF ON 9 dB pilot = 10%, V28 = 3V→0.6V, pin 15 Continued on next page. No.A0229-2/6 LA1787NM Continued from preceding page. Parameter HCC output Symbol Conditions AttHCC-1 10.7MHz, 100dBµ, 10kHz, attenuation (1) Switch settings 1 2 3 4 5 6 7 Ratings 8 9 10 min typ max Unit ON B OFF B ON OFF OFF ON 0.5 4.5 8.5 dB ON B OFF B ON OFF OFF ON 6 10 14 dB ON B OFF B ON OFF OFF ON ON 33 40 47 dBµ ON B OFF B ON OFF OFF ON 27 35 43 dBµ ON B OFF B OFF OFF OFF OFF ON 54 62 70 dBµ B OFF B ON OFF OFF OFF ON 54 62 70 dBµ L+R = 90%, pilot = 10%, V29 = 3V→0.6V, pin 15 HCC output AttHCC-2 10.7MHz, 100dBµ, 10kHz, attenuation (2) L+R = 90%, pilot = 10%, V29 = 3V→0.1V, pin 15 Input limiting Vi-lim 100dBµ, 10.7MHz, 30% modulation voltage The IF input such that the output is -3dB down referenced to the input Muting Vi-mute The IF input level when V33 = 2V, sensitivity SD sensitivity no modulation SD-sen1FM The IF input such that the IF counter (1) buffer output goes to the on state (100mVrms or higher) SD sensitivity SD-sen2FM The IF input such that the SD pin goes ON (2) to the on state, no modulation IF counter buffer VIFBUFF-FM 10.7MHz, 100dBµ, no modulation, output The pin 23 output ON B OFF B OFF OFF OFF OFF ON 130 200 270 mVrms S-meter output ON B OFF B OFF OFF OFF ON 0.0 0.1 0.3 V ON B OFF B OFF OFF OFF ON 0.4 1.0 1.5 V ON B OFF B OFF OFF OFF ON 2.0 2.7 3.5 V ON B OFF B OFF OFF OFF ON 4.7 5.5 6.2 V ON B OFF B OFF OFF OFF ON 150 220 290 kHz ON B OFF B OFF OFF OFF ON 0.00 0.03 0.20 V A ON B ON OFF OFF 81 88 95 dBµ A ON B ON OFF OFF 104 110 116 dBµ ON A ON B ON OFF OFF 19 30 48 mVrms ON A ON B ON OFF OFF 85 110 165 mVrms VSMFM-1 No input, the pin 24 DC output, no modulation VSMFM-2 50dBµ, the pin 24 DC output, no modulation VSMFM-3 70dBµ, the pin 24 DC output, no modulation VSMFM-4 100dBµ, the pin 24 DC output, no modulation Muting BW-mute 100dBµ, the bandwidth when V33 = attenuation Muting drive 2V, no modulation VMUTE-100 100dBµ, 0dBµ, the pin 33 DC output, output no modulation FM Front End Mixer Input N-AGC on input VNAGC 83MHz no modulation, the input such ON that pin 2 becomes 2.0V or lower W-AGC on VWAGC 83MHz no modulation, the input such ON input that pin 2 becomes 2.0V or lower (when the keyed AGC is 4.0V) Conversion gain A. V 83MHz, 80dBµ, no modulation, the FE CF output Oscillator buffer No input VOSCBUFFFM output Noise Canceller Block - NC Input (pin 30) Gate time τ GATE OFF A ON OFF OFF 55 µs ON OFF A ON OFF OFF 40 mVp-o The pulse exclusion effect due to ON/ OFF A ON OFF OFF noise canceller operation. OFF f = 1kHz, 1µs, with a 100mVp-o pulse ON input Noise sensitivity SN The 1kHz 1µs pulse input level such that noise canceller operation starts Noise canceller SN-NC effect 5 Repetition frequency for a 1µs pulse. The ratio of the FM mode pin 15 output referenced to the pin 15 output in 10kHz 150mVp-o AM mode. Multipath Rejection Circuit - MRC Input (pin 27) MRC output MRC operating VMRC V24 = 5V MRC-ON level ON OFF B ON OFF OFF 2.2 2.3 2.4 V The pin 32 input level such that pin 24 ON OFF B ON OFF OFF 10 15 20 mVrms = 5V and pin 27 = 2V, f = 70kHz AM Characteristics - ANT IN input Practical S/N-30 sensitivity Detection output 1MHz, 30dBµ, fm = 1kHz, OFF OFF B ON ON 20 OFF OFF B ON ON 130 dB 30% modulation, pin 15 VO-AM 1MHz, 74dBµ, fm = 1kHz, 195 270 mVrms 30% modulation, pin 15 Continued on next page. No.A0229-3/6 LA1787NM Continued from preceding page. Parameter Symbol Pin 31 detection VO-AM31 output AGC-F.O.M Switch settings Conditions 1MHz, 74dBµ, fm = 1kHz, 1 2 3 4 5 6 7 Ratings 8 9 10 min typ max Unit OFF OFF B ON ON 110 175 230 mVrms OFF OFF B ON ON 51 56 61 dB OFF OFF B ON ON 47 52 OFF OFF B ON ON 30% modulation, pin 31 VAGC-FOM 1MHz, 74dBµ, referenced to the output, the input width such that the output falls by 10dB, pin 15 Signal-to-noise S/N-AM ratio Total harmonic dB 30% modulation THD-AM distortion S-meter output 1MHz, 74dBµ, fm = 1kHz, 1MHz, 74dBµ, fm = 1kHz, 0.3 1 % 80% modulation VSMAM-1 No input OFF OFF B ON ON 0.0 0.2 0.5 V VSMAM-2 1MHz, 130dBµ, no modulation OFF OFF B ON ON 4.8 6.0 7.3 V OFF OFF B ON ON 185 230 Oscillator buffer VOSCBUFFAM1 No input, the pin 15 output mVrms output Wideband AGC W-AGCsen1 1.4MHz, the input when V46 = 0.7V OFF OFF B ON ON 92 98 104 dBµ sensitivity W-AGCsen2 1.4MHz, the input when V46 = 0.7V OFF OFF B ON ON 83 89 95 dBµ OFF OFF B OFF OFF 24 30 36 dBµ OFF OFF B OFF OFF 24 30 36 dBµ OFF OFF B OFF OFF 200 290 (during a seek) SD sensitivity SD-sen1AM 1MHz, the ANT input level such that the IF counter output turns on. SD-sen2AM 1MHz, the ANT input level such that the SD pin goes to the on state. IF buffer output VIFBUFF-AM 1MHz, 74dbµ non-mod, the pin 23 mVrms output *1: When the value of the resistor between pin 58 and ground is 200kΩ. *2: When the value of the resistor between pin 58 and ground is 30kΩ. Package Dimensions unit : mm 3159A No.A0229-4/6 LA1787NM IF limiter amplifier Block Diagram and Test Circuit PCA00627 No.A0229-5/6 LA1787NM 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 subject to change without notice. PS No.A0229-6/6