Ordering number : ENA0306 Bi-CMOS IC LV3401M FM Multiplex Filter Overview The LV3401M is a filter IC for FM multiplex broadcasting reception which is used in combination with demodulation and error correction IC (LC72700 series). The use of switched capacitor filter (SCF) technique obviates the need for frequency adjustment and ensures stable operation. Functions • 76kHz BPF (Gaussian filter) • 54kHz HPF • 125kHz LPF • Anti-aliasing filter • Limiter circuit Specifications Maximum Ratings at Ta = 25°C Parameter Maximum supply voltage Symbol Conditions Ratings VCC max Input voltage V3, V12 Allowable power dissipation Pd max Unit 6 V -0.3 to VCC+0.3 Ta≤85°C * V 180 mW Operating temperature Topr -40 to +85 °C Storage temperature Tstg -55 to +125 °C * Mounted on a board:114.3×76.1×1.6mm3 Glass epoxy Operating Conditions at Ta = 25°C Parameter Recommended supply voltage Symbol Conditions VCC Allowable operating range VCC op Input signal voltage range VIN Baseband signal for FM : 100% modulation fin = 76kHz, CW Ratings Unit 5.0 V 3 to 5.5 V 200 to 300 mVrms 8 to 30 mVrms Clock frequency fck Rectangular wave 3.60 MHz Clock input voltage Vck Rectangular wave 1.0 to VCC Vp-p 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 / 30106 B8-6545 No.A0306-1/4 LV3401M Electrical Characteristics at Ta = 25°C, VCC = 5V, fck = 3.6MHz, Vck = 1Vp-p Parameter Symbol Ratings Conditions min Supply current SCF block common voltage typ Unit max ICCO Pin 14 current when VIN = no signal 3.8 6 8 V2 Pin 2 voltage when VIN = no signal 2.2 2.4 2.6 mA V Signal input resistance RIN3 Pin 3 input resistance 36 kΩ Clock input resistance RIN12 Pin 12 input resistance 5 kΩ [MSK output] MSK input sensitivity V3S Input level at which an MSK output having a frequency 4 mVrms of 76kHz is obtained when VIN = 76kHz, CW is applied. MSK output H level V10H MSK output L level V10L VIN = 76kHz, 4mVrms, CW 4 V 0.4 V Reference Characteristics Parameter Symbol Conditions Ratings Unit fAAF fHPF 300 kHz 54 kHz LPF cutoff frequency fLPF 125 kHz BPF center frequency fBPF 76 kHz fBPF-3dB 19 kHz BDL ±5 µs AAF cutoff frequency HPF corner frequency BPF-3dB frequency In-band maximum group delay time difference Pin Assignment Package Dimensions unit :mm 3111A 8.0 14 1 1.7max 7 0.35 0.15 0.1 (1.5) 1.0 1.0 0.63 4.4 6.4 8 SANYO : MFP14S(225mil) No.A0306-2/4 LV3401M Block Diagram and Test Circuit Pin Description Pin No. Pin name 1 GND Description 2 VCOM SCF block common pin. Decoupling capacitor connection. 3 SIG.IN Signal input pin. FM demodulation signal (composite signal) input. Demodulation signal 200 to 300mVrms input. 10 MSK OUT 11 VREF Limiter reference pin. Internal resistor and external capacitor are used to form LPF. 12 CLKIN 3.6MHz clock input. Since limiter amplifier provides DC bias, clock is input through capacitive coupling. 14 VCC 5, 8, 13 TEST PIN 4, 6, 7, 9 NC Ground pin When 76kHz only is input, input sensitivity is 4mVrms or less. MSK output (CMOS output) Power supply pin. Test pin. Left open. Idle pin. No.A0306-3/4 LV3401M Usage Notes (1) Leave pins 4 to 9 and pin 13 open. (2) Input the clock to pin 12, as such, through a capacitor (100pF) from the decoder(LC72700 series) clock output pin or input the clock to pin 12 through a capacitor after making the rising/trailing edge less steep by inserting a CR-formed LPF en route if it is desirable to reduce spurious radiation from the clock line. (3) 5ms or less are recommended at the rising time of the power supply. 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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 March, 2006. Specifications and information herein are subject to change without notice. PS No.A0306-4/4