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PRODUCT INFORMATION
Vol. 76
Optical Pickup High-Frequency Superposition IC Developed Industry's smallest device achieved by integration on a single chip
SMA4201
Background
Due to their short wavelengths and high outputs, single mode lasers are widely used as the lasing element in the optical pickups used in DVD, MD, CD-R, and similar equipment to read and write signals from the recording media. The high-frequency superposition technique is used as a means for reducing the laser noise associated with these devices. Until now, high-frequency superposition circuits have been implemented either as modules consisting of discrete transistors or as gallium arsenide (GaAs) ICs. However, due to desires for further miniaturization and reduced costs in these products, there are now strong desires for more compact high-frequency superposition circuits implemented as silicon-based ICs.
Overview
Sanyo's high-performance microwave silicon bipolar transistor and MMIC (monolithic microwave integrated circuits) products, which are based on Sanyo's unique silicon high-frequency device technology, have been well received in the market. Now, Sanyo has succeeded in developing and releasing as a commercial product the SMA4201 ultraminiature optical pickup high-frequency superposition IC, which is based on Sanyo's unique high-frequency device circuit technology and Sanyo's 16-GHz high fT (cutoff frequency) silicon bipolar fabrication process. Sanyo is committed to an active and forward-looking program of developing oscillator circuit device products using this unique silicon high-frequency device technology and expanding its business in this area. These products will be optimal for portable digital equipment applications, and will range from the optical pickup device mentioned above to devices for use in portable telephones and notebook personal computers.
SANYO Electric Co., Ltd. Semiconductor Company Overseas Marketing Division
TOKYO OFFICE: Tokyo Bldg., 1-10, 1 Chome, Ueno, Taito-ku, TOKYO, 110-8534 JAPAN 1
PRODUCT INFORMATION
Features
* Extreme miniaturization achieved by adopting a miniature molded package (MCP6: 2.0 x 1.25 mm) This IC integrates an oscillator circuit and an output amplifier circuit on a single chip packaged in the MCP6 package for ultracompact surface mounting. Thus this IC can contribute to miniaturization of optical pickup systems. * Low-voltage operation: VCC = 3.0 to 3.5 V This device achieves 3-V low-voltage operation and aims at improved reliability by adopting gold electrodes (a gold, platinum, and titanium alloy) and Sanyo's unique high-performance silicon bipolar process that features a transistor cell with a high-precision submicron emitter, an extremely shallow junction formation technology, and a process that reduces parasitic capacitances. * Allows the selection of an oscillator frequency in the 200-MHz to 700-MHz range Since the SMA4201 supports oscillator frequencies in the 200-MHz to 700-MHz range, it supports the optical pickups used in MD, CD-R, DVD and DVD-ROM players and drives.
Specifications
Electrical Characteristics at Ta = 25C
Item Circuit current Output power Symbol ICC POSC VCC = 3 V VCC = 3 V, fOSC = 450 MHz, RL = 50 Test condition Typical value 11 -3 Unit mA dBm
Sample Availability
Sample of the SMA4201 will be available in March 1999; production quantities will be anticipated in the end of 1999.
MARCH 3, 1999
SANYO Electric Co., Ltd. Semiconductor Company Overseas Marketing Division
2
PRODUCT INFORMATION
s Any and all SANYO 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 representative nearest you before using any SANYO products described or contained herein in such applications. s SANYO 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 products described or contained herein. s Specifications of any and all SANYO 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. s SANYO Electric 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. s In the event that any or all SANYO 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. s 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 Electric Co., Ltd. s 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 product that you intend to use. s Information (including circuit diagrams and circuit parameters) herein is for example only; it is not guaranteed for volume production. SANYO 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.
SANYO Electric Co., Ltd. Semiconductor Company Overseas Marketing Division
40299/76
3

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