Ordering number : ENA0304 LA2352M Monolithic Linear IC For Car-LAN Transceiver IC Overview The LA2352M is Low-noise transceiver IC for car-LAN. Either a 5Mbps or a 7.5Mbps automotive LAN can be formed by combining this IC with an automotive LAN protocol chip. Features • Combining this IC with protocol IC TMC20040C series* for automotive LAN can compose an automotive LAN. • Supports both 3-bit digital and staircase signals as the input signal. When a 3-bit digital signal cannot be used for wiring runs due to EMI considerations, you can provide an R-2R ladder in the vicinity of the protocol chip, use the post-D/A converter signal for the wiring, and connect that signal to the low-pass filter input. • Built-in adjustment-free low-pass filter. • Provides low-noise data communication. *: The TMC20040C series is IC made of SMSC Japan (Standard Microsystems Kabushiki Kaisha). Functions Transmitter block • D/A converter (3 bit). • LPF (for prevention of EMI). • Output driver. Receiver block • Attenuator. • Receiving amplifier. • Noise eliminating LPF (for the receive signal). • Comparator (for waveform shaping). 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 / 22806 MS OT B8-5777 No.A0304-1/5 LA2352M Specifications Maximum Ratings at Ta = 25°C Parameter Maximum supply voltage Allowable power dissipation Symbol VCC max Pd max Conditions Ratings With no signal Ta≤85°C * Unit 7.0 V 500 mW Operating temperature Topr -40 to +85 °C Storage temperature Tstg -55 to +150 °C * Mounted on a board : 46.2×25.7×1.6mm3, material glass epoxy Operating Conditions at Ta = 25°C Parameter Symbol Ratings Conditions min Recommended supply voltage VCC Operating supply voltage range VCC op DAC input VOL Send control input typ Unit max 5.0 4.75 Low level input VOH High level input VOL Low level input VOH High level input 0 2.4 V 5.25 V 0.5 V 3.3 V 0.5 2.4 V V LPF input amplitude Vlpfi 0.45 0.55 Vp-p Output driver input amplitude Vdrvi 0.45 0.55 Vp-p Receiving amplifier input signal Vrxi 0.9 1.1 Vp-p 1.2 3.5 V 0.8 1.2 Vp-p amplitude range (differential) Comparator input voltage range Comparator input signal Vcpdci Vcpi amplitude Operating Characteristics at Ta=25°C, VCC=5.0V Designated test circuit Note that this test was made with the IC socket made by Yamaichi Electrics, IC-51-0302-426. Parameter Symbol Conditions Ratings SW1 min Current dissipation without signal ICCO typ Unit max With no signal, I1+I17+I24, pin 25 = 2.4V 1 35 50 70 mA (111); TXI2 = TXI1 = TXI0 = 3.3V, 1 -1 0 1 dB 1 -1 0 1 dB 1 2 3 4 dB 0 1.5 3 dB 3 dB [DAC] Output Level DAC (111)-(001) (001); TXI2 = TXI1 = 0V, TXI0 = 3.3V Deviation for the output voltage difference of 0.5Vp-p [LPF] Insertion loss LPF7501 (7.5Mbps mode) 13.25MHz attenuation degree VIN1 = -2dBm input, FCC (pin 9) = VCC Attenuation degree of 1MHz signal LPF7513 (7.5Mbps mode) VIN1 = -2dBm input, FCC (pin 9) = VCC Degree of attenuation of 13.25MHz for 1MHz [Driver Amp] Output level DRV01 VIN2 = -2dBm input, TXEN (pin 25) = GND, Rl = 25Ω 18PIN and 19PIN output 1 MHz output level 1 Attenuation degree of 15MHz DRV15 VIN2 = -2dBm input, TXEN (pin 25) = GND, Rl = 25Ω Degree of attenuation of 15MHz for 1 MHz 1 VIN3 = 4dBm input, VIN4 = 0V input (Connect RXI2 (pin 14) to GND in C connection pattern) 1 -2 0 2 dB 1 2.0 3.0 4.2 dB [Attenuator & Receiver AMP & Noise Filter] GAIN (pin 15) RCV01 Degree of attenuation RCV15 15pin input gain at 1 MHz input of 15MHz VIN3 = 4dBm input, VIN4 = 0V input (Connect RXI2 (pin 14) to GND in C connection pattern) Degree of attenuation of 15 MHz for 1 MHz [Comparator] Output high voltage VH VIN6 = 4V input, VDDI(pin 20) = 3.3V CPD (pin 3) output DC voltage 2 3.0 3.1 3.2 V Output low voltage VL VIN6 = 1V input, VDDI(pin 20) = 3.3V CPD (pin 3) output DC voltage 2 0.2 0.4 0.6 V No.A0304-2/5 LA2352M Package Dimensions unit : mm 3073C 15.2 0.65 7.9 16 10.5 30 1 1.0 0.4 15 0.25 0.1 (2.25) 2.45max (0.6) SANYO : MFP30SD(375mil) Block Diagram and Test Circuit Diagram No.A0304-3/5 LA2352M Pin Description Pin Pin No. Name Pin Description Pin Function 1 VCC2 Comparator power supply Same as VCC1 (pin 24) 2 GND3 DAC GND GND dedicated to DAC. 3 CPD 4 GND2 5 CP1 6 NFO Noise elimination filter output 7 CP2 Comparator input (-) 8 GND1 9 FCC Remarks Comparator non-inverted output Comparator GND GND dedicated to comparator. Comparator input (+) GND Baud rate setting Standard: OPEN System GND. 5Mbps as connected to GND and 7.5Mbps as connected to VCC1. 10 BIAS5 Comparator bias Connect to GND via capacitor. 11 FADJ Fine adjustment of the noise elimination LPF Adjust with a resistor to GND. Standard: OPEN shut-off frequency 12 BIAS4 Bias voltage Connect to GND via capacitor. 13 GCNT Receiving amplifier amplitude adjustment Adjust with a resistor to GND. Standard: 0Ω (C connection with GND) 14 RXI2 Receive signal inverted input 15 RXI1 Receive signal non-inverted input 16 BIAS2 Bias voltage Connect to GND via capacitor. 17 VCC3 Power supply Same as VCC1 (pin 24) 18 TXO2 Send signal non-inverted output 19 TXO1 Send signal inverted output 20 VDDI Comparator switch Connect VDD to supply to the protocol chip. 21 BIAS3 Bias voltage Connect to GND via capacitor. 22 DRVI Output driver input 23 LPFO LPF output 24 VCC1 Power supply +5.0V ±5% 25 TXEN Send/receive changeover control L for send and H for receive. 26 LPFI LPF input 27 DAO D/A converter output 28 TXI2 D/A converter input (MSB) VOL = 0.5V, VOH = 2.4V 29 TXI1 D/A converter input VOL = 0.5V, VOH = 2.4V 30 TXI0 D/A converter input (LSB) VOL = 0.5V, VOH = 2.4V (VOL = 0.5V, VOH = 2.4V) 0.5Vp-p ±1dB No.A0304-4/5 LA2352M Example of Application Circuit 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 February, 2006. Specifications and information herein are subject to change without notice. PS No.A0304-5/5