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Ordering number : ENA0304
LA2352M
Overview
Monolithic Linear IC
For Car-LAN
Transceiver IC
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 = 25C
Parameter Maximum supply voltage Allowable power dissipation Operating temperature Storage temperature Symbol VCC max Pd max Topr Tstg With no signal Ta85C * Conditions Ratings 7.0 500 -40 to +85 -55 to +150 Unit V mW C C
* Mounted on a board : 46.2x25.7x1.6mm3, material glass epoxy
Operating Conditions at Ta = 25C
Parameter Recommended supply voltage Operating supply voltage range DAC input Symbol VCC VCC op VOL VOH Send control input VOL VOH LPF input amplitude Output driver input amplitude Receiving amplifier input signal amplitude range (differential) Comparator input voltage range Comparator input signal amplitude Vcpdci Vcpi Vlpfi Vdrvi Vrxi Low level input High level input Low level input High level input 2.4 0.45 0.45 0.9 1.2 0.8 0.55 0.55 1.1 3.5 1.2 2.4 4.75 0 3.3 0.5 Conditions min Ratings typ 5.0 5.25 0.5 max V V V V V V Vp-p Vp-p Vp-p V Vp-p Unit
Operating Characteristics at Ta=25C, 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 Current dissipation without signal [DAC] Output Level (111)-(001) [LPF] Insertion loss (7.5Mbps mode) 13.25MHz attenuation degree (7.5Mbps mode) [Driver Amp] Output level Attenuation degree of 15MHz DRV01 DRV15 VIN2 = -2dBm input, TXEN (pin 25) = GND, Rl = 25 18PIN and 19PIN output 1 MHz output level VIN2 = -2dBm input, TXEN (pin 25) = GND, Rl = 25 Degree of attenuation of 15MHz for 1 MHz 1 1 0 1.5 3 3 dB dB LPF7513 LPF7501 VIN1 = -2dBm input, FCC (pin 9) = VCC Attenuation degree of 1MHz signal VIN1 = -2dBm input, FCC (pin 9) = VCC Degree of attenuation of 13.25MHz for 1MHz 1 2 3 4 dB 1 -1 0 1 dB DAC (111); TXI2 = TXI1 = TXI0 = 3.3V, (001); TXI2 = TXI1 = 0V, TXI0 = 3.3V Deviation for the output voltage difference of 0.5Vp-p 1 -1 0 1 dB Symbol ICCO Conditions With no signal, I1+I17+I24, pin 25 = 2.4V SW1 min 1 35 Ratings typ 50 max 70 mA Unit
[Attenuator & Receiver AMP & Noise Filter] GAIN (pin 15) RCV01 VIN3 = 4dBm input, VIN4 = 0V input (Connect RXI2 (pin 14) to GND in C connection pattern) 15pin input gain at 1 MHz input Degree of attenuation of 15MHz [Comparator] Output high voltage Output low voltage VH VL VIN6 = 4V input, VDDI(pin 20) = 3.3V CPD (pin 3) output DC voltage VIN6 = 1V input, VDDI(pin 20) = 3.3V CPD (pin 3) output DC voltage 2 2 3.0 0.2 3.1 0.4 3.2 0.6 V V RCV15 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 1 2.0 3.0 4.2 dB 1 -2 0 2 dB
No.A0304-2/5
LA2352M
Package Dimensions
unit : mm 3073C
15.2 30 16
10.5
7.9
1 (0.6)
1.0
0.4
15
0.25
SANYO : MFP30SD(375mil)
Block Diagram and Test Circuit Diagram
0.1 (2.25)
2.45max
0.65
No.A0304-3/5
LA2352M
Pin Description
Pin No. 1 2 3 4 5 6 7 8 9 Pin Name VCC2 GND3 CPD GND2 CP1 NFO CP2 GND1 FCC Pin Description Comparator power supply DAC GND Comparator non-inverted output Comparator GND Comparator input (+) Noise elimination filter output Comparator input (-) GND Baud rate setting System GND. 5Mbps as connected to GND and 7.5Mbps as connected to VCC1. 10 11 12 13 BIAS5 FADJ BIAS4 GCNT Comparator bias Fine adjustment of the noise elimination LPF shut-off frequency Bias voltage Receiving amplifier amplitude adjustment Connect to GND via capacitor. Adjust with a resistor to GND. (C connection with GND) 14 15 16 17 18 19 20 21 22 23 24 25 RXI2 RXI1 BIAS2 VCC3 TXO2 TXO1 VDDI BIAS3 DRVI LPFO VCC1 TXEN Receive signal inverted input Receive signal non-inverted input Bias voltage Power supply Send signal non-inverted output Send signal inverted output Comparator switch Bias voltage Output driver input LPF output Power supply Send/receive changeover control +5.0V 5% L for send and H for receive. (VOL = 0.5V, VOH = 2.4V) 26 27 28 29 30 LPFI DAO TXI2 TXI1 TXI0 LPF input D/A converter output D/A converter input (MSB) D/A converter input D/A converter input (LSB) 0.5Vp-p 1dB VOL = 0.5V, VOH = 2.4V VOL = 0.5V, VOH = 2.4V VOL = 0.5V, VOH = 2.4V Connect VDD to supply to the protocol chip. Connect to GND via capacitor. Connect to GND via capacitor. Same as VCC1 (pin 24) Standard: 0 Connect to GND via capacitor. Adjust with a resistor to GND. Standard: OPEN Standard: OPEN GND dedicated to comparator. Pin Function Same as VCC1 (pin 24) GND dedicated to DAC. Remarks
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

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