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Paper Abstract and Keywords
Presentation 2007-06-22 10:30
A Lateral Unified-CBiCMOS Buffer Circuit for Driving 5nF Maximum Load Capacitance per CCD Clock
Masatoshi Kobayashi, Takashi Hamahata, Toshiro Akino, Kenji Nishi, Cuong Vo Le, Kousei Takehara, T. Goji Etoh (Kinki Univ.) CAS2007-22 VLD2007-38 SIP2007-52
Abstract (in Japanese) (See Japanese page) 
(in English) Since 2001, we have been developing an in-situ storage image sensor (ISIS) that captures 100 to 150 consecutive images at a frame rate of 1 Mfps and an ultra-high-speed video camera for use with this ISIS. Currently, basic research is continuing in an attempt to increase the frame rate up to 100 Mfps. The CCD chip of this camera has a 10 V maximum voltage supply source and a 5 nF maximum load capacitance per CCD clock. The goal of this study is to design a prototype power supply chip for generating the CCD clock and for driving the load capacitance of the CCD chip. A further goal is to verify the circuit behavior, based on a 1-μm CMOS/SOI process having breakdown voltages of almost 20 V. A lateral unified-CBiCMOS buffer circuit consists of n- and p-channel MOSFETs that include parasitic lateral npn- and pnp-BJTs having partially depleted p- and n-base layers, respectively, on an epitaxial substrate and SOI. A forward current is applied to the base terminal of the channel MOSFET, adding a normal pull-up or pull-down MOSFET as a current source. A new device structure is designed to reduce the resistance values between the drains and the bases, while also keeping both MOSFETs inactive and activating either the lateral npn or pnp BJT. A clock generator consisting of a ring oscillator with a 21-stage CMOS inverter amplified and driven by a buffer circuit is designed. Circuit simulation using 1-μm LEVEL-3 model parameters for the MOSFETs and a current gain of βF = 100 for the BJTs reduced the delay time of the unified-CBiCMOS buffer circuit by approximately 1/4, compared to that for an equivalent two-stage CMOS inverter circuit designed on the basis of logical effort for driving a load capacitance of 5 nF at Vdd = 10 V. The power supply chip with the unified-CBiCMOS buffer circuit can drive the CCD chip at a frame rate of 10 Mfps for a 5-nF load capacitance
Keyword (in Japanese) (See Japanese page) 
(in English) Slanted linear CCD storage / ISIS / CMOS/SOI / Lateral unified-CBiCMOS / / / /  
Reference Info. IEICE Tech. Rep., vol. 107, no. 103, VLD2007-38, pp. 19-24, June 2007.
Paper # VLD2007-38 
Date of Issue 2007-06-15 (CAS, VLD, SIP) 
ISSN Print edition: ISSN 0913-5685  Online edition: ISSN 2432-6380
All rights are reserved and no part of this publication may be reproduced or transmitted in any form or by any means, electronic or mechanical, including photocopy, recording, or any information storage and retrieval system, without permission in writing from the publisher. Notwithstanding, instructors are permitted to photocopy isolated articles for noncommercial classroom use without fee. (No. 10GA0019/12GB0052/13GB0056/17GB0034/18GB0034)
Download PDF CAS2007-22 VLD2007-38 SIP2007-52

Conference Information
Committee CAS SIP VLD  
Conference Date 2007-06-21 - 2007-06-22 
Place (in Japanese) (See Japanese page) 
Place (in English) Hokkaido Tokai Univ. (Sapporo) 
Topics (in Japanese) (See Japanese page) 
Topics (in English)  
Paper Information
Registration To VLD 
Conference Code 2007-06-CAS-SIP-VLD 
Language Japanese 
Title (in Japanese) (See Japanese page) 
Sub Title (in Japanese) (See Japanese page) 
Title (in English) A Lateral Unified-CBiCMOS Buffer Circuit for Driving 5nF Maximum Load Capacitance per CCD Clock 
Sub Title (in English)  
Keyword(1) Slanted linear CCD storage  
Keyword(2) ISIS  
Keyword(3) CMOS/SOI  
Keyword(4) Lateral unified-CBiCMOS  
1st Author's Name Masatoshi Kobayashi  
1st Author's Affiliation Kinki University (Kinki Univ.)
2nd Author's Name Takashi Hamahata  
2nd Author's Affiliation Kinki University (Kinki Univ.)
3rd Author's Name Toshiro Akino  
3rd Author's Affiliation Kinki University (Kinki Univ.)
4th Author's Name Kenji Nishi  
4th Author's Affiliation Kinki University (Kinki Univ.)
5th Author's Name Cuong Vo Le  
5th Author's Affiliation Kinki University (Kinki Univ.)
6th Author's Name Kousei Takehara  
6th Author's Affiliation Kinki University (Kinki Univ.)
7th Author's Name T. Goji Etoh  
7th Author's Affiliation Kinki University (Kinki Univ.)
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Date Time 2007-06-22 10:30:00 
Presentation Time 20 
Registration for VLD 
Paper # IEICE-CAS2007-22,IEICE-VLD2007-38,IEICE-SIP2007-52 
Volume (vol) IEICE-107 
Number (no) no.101(CAS), no.103(VLD), no.105(SIP) 
Page pp.19-24 
#Pages IEICE-6 
Date of Issue IEICE-CAS-2007-06-15,IEICE-VLD-2007-06-15,IEICE-SIP-2007-06-15 

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