LA1787NM

Ordering number : ENA0229 Monolithic Linear IC LA1787NM Overview Single-Chip Car Radio System IC 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 Maximum supply voltage Symbol VCC1 max VCC2 max Allowable power dissipation Operating temperature Storage temperature Pd max Topr Tstg Pins 6, 40, and 61 Pins 7, 45, 54, 59, and 60 Ta ≤ 55°C Conditions Ratings 9.0 12 950 -40 to +85 -40 to +150 Unit V V mW °C °C Recommended Operating Conditions at Ta = 25°C Parameter Recommended supply voltage Symbol VCC VCCST IND Operating supply voltage range VCC op Conditions Pins 6, 7, 40, 45, 54, 59, 60, and 61 Pins 26 Ratings 8.0 5 7.5 to 9.0 Unit V V V 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 8 9 10 min Ratings typ max Unit FM Characteristics - FM IF Input Quiescent current Demodulated output Pin 31 demodulated output Channel balance Total harmonic distortion Signal-to-noise ratio (IF) AM rejection ratio (IF) Muting attenuation (1) Muting attenuation (2) Muting attenuation (3) Separation Stereo on level Stereo off level Main distortion Pilot cancellation SNC output attenuation AttSNC Separation ST-ON ST-OFF THD-Main L PCAN Att-3 Att-2 Att-1 AMR IF S/N-FM IF CB 10.7MHz, 100dBµ, 1kHz, Pins 15, 16 ratio THD-FMmono 10.7MHz, 100dBµ, 1kHz, 100% modulation, pin 15 10.7MHz, 100dBµ, 1kHz, 100% modulation, pin 15 10.7MHz, 100dBµ, 1kHz, fm = 1kHz, pin 15 when 30% AM 10.7MHz, 100dBµ, 1kHz, The pin 15 attenuation when V33 is changed from 0 to 2V 10.7MHz, 100dBµ, 1kHz, The pin 15 attenuation when V33 is changed from 0 to 2V *1 10.7MHz, 100dBµ, 1kHz, The pin 15 attenuation when V33 is changed from 0 to 2V *2 10.7MHz, 100dBµ, L+R = 90%, pilot = 10%, the pin 15 output ratio The pilot modulation such that V26 is less than 0.5V The pilot modulation such that V26 is less than 3.5V 10.7MHz, 100dBµ, L+R = 90%, pilot = 10%, pin 15 10.7MHz, 100dBµ, pilot = 10%, Pin 15 signal The pilot level leakage, DIN audio 10.7MHz, 100dBµ, L-R = 90%, pilot = 10%, V28 = 3V→0.6V, pin 15 Continued on next page. ON B OFF B ON OFF OFF ON 1 5 9 dB ON B OFF B ON OFF OFF OFF /ON 20 30 dB ON B OFF B ON OFF OFF ON 0.3 1.2 % ON B OFF B ON OFF OFF ON 1.3 3.2 % ON B OFF B ON OFF OFF ON 2.1 4.1 6.1 % ON B OFF B ON OFF OFF ON 30 40 dB ON B OFF B ON ON OFF ON 28 33 38 dB ON B OFF B ON ON OFF ON 15 20 25 dB ON B OFF B ON OFF OFF ON 5 10 15 dB ON B OFF B ON OFF OFF ON 55 68 dB ON B OFF B ON OFF OFF ON 75 82 dB ON B OFF B ON OFF OFF ON 0.3 1 % ON B OFF B ON OFF OFF ON -1 0 +1 dB VO-FM31 VO-FM 10.7MHz, 100dBµ, 1kHz, 100% modulation, the pin 15 output 10.7MHz, 100dBµ, 1kHz, 100% modulation, the pin 31 output ON B OFF B ON OFF OFF ON 190 295 380 mVrms ON B OFF B ON OFF OFF ON 205 310 415 mVrms ICCO-FM No input, I40+I45+I54+I59+I60+I61 ON B OFF B ON OFF OFF ON 60 94 110 mA No.A0229-2/6 LA1787NM Continued from preceding page. Parameter HCC output attenuation (1) HCC output attenuation (2) Input limiting voltage Muting sensitivity SD sensitivity (1) SD sensitivity (2) SD-sen2FM SD-sen1FM Vi-mute Vi-lim AttHCC-2 Symbol AttHCC-1 Conditions 10.7MHz, 100dBµ, 10kHz, L+R = 90%, pilot = 10%, V29 = 3V→0.6V, pin 15 10.7MHz, 100dBµ, 10kHz, L+R = 90%, pilot = 10%, V29 = 3V→0.1V, pin 15 100dBµ, 10.7MHz, 30% modulation The IF input such that the output is -3dB down referenced to the input The IF input level when V33 = 2V, no modulation The IF input such that the IF counter buffer output goes to the on state (100mVrms or higher) The IF input such that the SD pin goes ON to the on state, no modulation ON ON ON ON ON ON ON B OFF B OFF OFF OFF OFF ON B OFF B B OFF B B OFF B B OFF B B OFF B B OFF B OFF OFF OFF ON OFF OFF OFF ON OFF OFF OFF ON OFF OFF OFF ON OFF OFF OFF ON OFF OFF OFF ON 130 0.0 0.4 2.0 4.7 150 0.00 200 0.1 1.0 2.7 5.5 220 0.03 270 0.3 1.5 3.5 6.2 290 0.20 mVrms V V V V kHz V B OFF B ON OFF OFF OFF ON 54 62 70 dBµ ON B OFF B OFF OFF OFF OFF ON 54 62 70 dBµ ON B OFF B ON OFF OFF ON 27 35 43 dBµ ON B OFF B ON OFF OFF ON ON 33 40 47 dBµ ON B OFF B ON OFF OFF ON 6 10 14 dB Switch settings 1 ON 2 3 4 5 6 7 8 9 10 min 0.5 Ratings typ 4.5 max 8.5 Unit dB B OFF B ON OFF OFF ON IF counter buffer VIFBUFF-FM 10.7MHz, 100dBµ, no modulation, output The pin 23 output S-meter output VSMFM-1 VSMFM-2 VSMFM-3 VSMFM-4 Muting attenuation Muting drive output FM Front End Mixer Input N-AGC on input W-AGC on input Conversion gain Oscillator buffer output Noise Canceller Block - NC Input (pin 30) Gate time Noise sensitivity Noise canceller effect τ GATE SN SN-NC A. V VOSCBUFFFM No input, the pin 24 DC output, no modulation 50dBµ, the pin 24 DC output, no modulation 70dBµ, the pin 24 DC output, no modulation 100dBµ, the pin 24 DC output, no modulation 100dBµ, the bandwidth when V33 = 2V, no modulation 100dBµ, 0dBµ, the pin 33 DC output, no modulation BW-mute VMUTE-100 VNAGC VWAGC 83MHz no modulation, the input such ON that pin 2 becomes 2.0V or lower 83MHz no modulation, the input such ON that pin 2 becomes 2.0V or lower (when the keyed AGC is 4.0V) 83MHz, 80dBµ, no modulation, the FE CF output No input ON ON A A ON ON B B ON OFF OFF ON OFF OFF 81 104 88 110 95 116 dBµ dBµ A A ON ON B B ON OFF OFF ON OFF OFF 19 85 30 110 48 165 mVrms mVrms f = 1kHz, 1µs, with a 100mVp-o pulse ON input The 1kHz 1µs pulse input level such that noise canceller operation starts The pulse exclusion effect due to noise canceller operation. 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. ON/ OFF ON OFF A OFF A OFF A ON OFF OFF ON OFF OFF ON OFF OFF 5 55 40 µs mVp-o Multipath Rejection Circuit - MRC Input (pin 27) MRC output MRC operating level AM Characteristics - ANT IN input Practical sensitivity Detection output VO-AM S/N-30 1MHz, 30dBµ, fm = 1kHz, 30% modulation, pin 15 1MHz, 74dBµ, fm = 1kHz, 30% modulation, pin 15 Continued on next page. OFF OFF B ON ON 130 195 270 mVrms OFF OFF B ON ON 20 dB VMRC MRC-ON V24 = 5V = 5V and pin 27 = 2V, f = 70kHz ON OFF B OFF B ON OFF OFF ON OFF OFF 2.2 10 2.3 15 2.4 20 V mVrms The pin 32 input level such that pin 24 ON No.A0229-3/6 LA1787NM Continued from preceding page. Parameter Pin 31 detection output AGC-F.O.M VAGC-FOM Symbol VO-AM31 Conditions 1MHz, 74dBµ, fm = 1kHz, 30% modulation, pin 31 1MHz, 74dBµ, referenced to the output, the input width such that the output falls by 10dB, pin 15 Signal-to-noise ratio Total harmonic distortion S-meter output VSMAM-1 VSMAM-2 output Wideband AGC sensitivity SD sensitivity W-AGCsen1 W-AGCsen2 SD-sen1AM SD-sen2AM IF buffer output VIFBUFF-AM Switch settings 1 OFF OFF 2 3 4 5 6 7 8 9 10 min 110 51 Ratings typ 175 56 max 230 61 Unit mVrms dB OFF B OFF B ON ON ON ON S/N-AM THD-AM 1MHz, 74dBµ, fm = 1kHz, 30% modulation 1MHz, 74dBµ, fm = 1kHz, 80% modulation No input 1MHz, 130dBµ, no modulation OFF OFF OFF OFF OFF OFF OFF OFF OFF OFF OFF B OFF B OFF B OFF B OFF B OFF B OFF B OFF B OFF B OFF B ON ON ON ON ON ON ON ON ON ON ON ON ON ON OFF OFF OFF OFF OFF OFF 47 52 0.3 1 0.5 7.3 dB % V V mVrms 104 95 36 36 dBµ dBµ dBµ dBµ mVrms 0.0 4.8 185 92 83 24 24 200 0.2 6.0 230 98 89 30 30 290 Oscillator buffer VOSCBUFFAM1 No input, the pin 15 output 1.4MHz, the input when V46 = 0.7V 1.4MHz, the input when V46 = 0.7V (during a seek) 1MHz, the ANT input level such that the IF counter output turns on. 1MHz, the ANT input level such that the SD pin goes to the on state. 1MHz, 74dbµ non-mod, the pin 23 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 Block Diagram and Test Circuit IF limiter amplifier 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