十通道VCD/DVD激光读取头用PDIC的研制

提出了一种用于VCD/DVD视盘机激光读取头的十通道单片集成PDIC(PhotoDetecting Integrated Circuit)芯片设计方案.芯片采用0.6μm CMOS工艺制程,用于光检测的PIN先电探测器在入射光渡长分别为780 nm和650 nm时,响应度分别可达到0.36 A/W和0.32A/W.互阻放大器的-3 dB带宽分别可达到36 MHz和100 MHz.     

一种硅光电接收处理集成电路的技术研究

介绍了一种在硅衬底上集成光电二极管探测器和双极接收放大处理电路的单芯片光电集成电路OEIC。从理论上阐述了光电器件实现的原理;为实现光电探测二极管与单片双极集成电路的兼容,设计了光电探测器的专用结构,并研制了光电探测器的专用模型。对接收处理电路进行了模拟仿真和优化设计。建立了与双极工艺兼容的制作光电二极管探测器的专用工艺;采用该工艺,对光电器件进行了版图设计、工艺制作和测试研究,给出了初步试验的方法和结果。     

光电二极管推进光存储器的发展

光电二极管推进光存储器的发展虽然多数人对小型光盘如何工作已有些概念，但只有少数人能详细描述其过程，更少数人可以描述光电二极管对ＣＤ－ＲＯＭ驱动器工作的作用。然而，这种微型元件对驱动器功能有重要影响。ＣＤ－ＲＯＭ是个标准直径为１２０ｍｍ的塑料盘，在从盘...     

光电集成电路的CAD系统

介绍了光电集成电路 ( OEIC) CAD系统的设计技术和软件功能。     

一种光电隔离混合集成电路的研制

本文介绍了一种为满足计算机采集信号需要,对16路信号进行隔离、处理的混合集成光电隔离接口电路,详细叙述了采用光耦裸芯片设计、制作混合集成隔离电路的方法。     

模拟集成电路的测试与故障检测技术

本文综述了模拟集成电路的测试及故障检测等有关问题，首先介绍面向性能的测试方法，然后讨论故障模型和面向故障的测试方法，在介绍了模拟集成电路的可测性设计技术之后，讨论了利用电源监测进行故障检测的方法。     

新型DVD/VCD光学头用PDIC的研制

PDIC是DVD／VCD光学头的关键部件。基于硅基工艺并采用混合集成的方法，研制出DVD和VCD兼容的、功能与国外同类商用产品相当的PDIC。着重介绍了器件设计思想、实现方法和测试结果。     

光学头中单片光电集成硅基PDIC的设计

针对应用于DVD光学头的关键部件PDIC,设计了一种芯片面积小、输出失调电压低的单片集成的硅基PDIC.芯片采用CSMC的0.5 μm BCD工艺,集成了p-i-n探测器与前置放大电路.重点介绍了p-i-n光电探测器及前置放大电路的设计思想.仿真结果表明,用于光电检测的p-i-n光电探测器在650 nm光照下响应度达0.2 A/W,互阻放大器的-3 dB带宽达到94 MHz,跨阻增益达150 kΩ.可以满足DVD系统的性能要求.     

DVD激光头技术发展新趋势

随着社会信息化的发展,光存储以其容量大、寿命长、成本低、复制速度快等显著优点已经成为现代社会信息存储的重要手段之一,而DVD类产品更是新一代数字视听技术和数字化信息存储设备的典型代表和潮流。它已经广泛应用于广播、电视、数据处理、文字／图像贮存、社会文化活动和家庭娱乐等领域。其读写关键技术的DVD激光头,主要功能是信号的记录和读出,是利用聚焦的激光束来完成的。文章主要介绍了DVD激光头的结构与读出原理、DVD激光头技术应用等几个方面,重点阐述了DVD激光头发展状况及其未来的发展趋势。     

用于DVD光学成像系统的非球面透镜设计

分析了DVD光学成像系统中采用非球面透镜的意义．进而确定了系统的参数,其读出激光波长为0．65μm,NA为0．6．系统焦距为3．39mm。采用光学树脂。应用ZEMAX光学设计软件,设计了满足要求的DVD光学成像系统．并对结果进行了分析．其聚焦光斑尺寸小于衍射极限。     

用于PDIC的跨阻放大器的优化设计

提出了一种用于PDIC的跨阻放大器.电路由三级相同的推挽放大器级联而成,每级均采用一动态电阻对负载进行补偿,以提高放大器的相位裕度.反馈电阻由一栅极受控的PMOS管替代,避免了大尺寸多晶硅电阻引入的附加相移,增加了电路的稳定性.采用XFAB 0.6μm CMOS工艺提供的PDK,在Cadence Spectre环境下进行电路设计、仿真验证.仿真结果表明,电路的增益、带宽及稳定性均得到满意结果.

Abstract：

Presented is a transimpedance amplifier for PDIC.The designed amplifier is configured on three identical push-pull amplifier stages that use an active load compensated by an active resistor to improve the phase margin of the amplifier.The feedback resistor is replaced by a PMOS transistor which is biased by the gate voltage.The replacement not only avoids the phase-shift introduced by the large ploy-resistor but improves the stability performance of the transimpedance amplifier.Based on XFAB's 0.6 μm CMOS,circuit design and simulation were performed by using Cadence Spectre.The simulation results show that the gain,bandwidth and stability of the amplifier all achieve good performance.     

一种新的头盔显示器光学系统设计方案

设计了一套新颖的透视式液晶头盔显示器的光学系统,取消了中继光学系统,采用二元光学元件消除像差,采用全息护目镜作为光学组合玻璃．和传统的光学系统相比,质量小,体积小,结构紧凑,像差和畸变小,成像质量好．     

深紫外CMOS图像传感器测试匀光系统设计

匀光系统的均匀性是实现深紫外CMOS图像传感器参数测试的关键。根据傅里叶光学理论,结合ArF准分子激光输出光斑特点,设计了复眼阵列匀光系统的初始结构,并在ZEMAX非序列模式下建立了匀光系统模型。针对ZEMAX光源中光线采样随机性的特点及匀光系统均匀性的要求,对追迹光线数目及复眼阵列中透镜元个数进行了优化。在透镜元大小为1mm、采用1亿根光线并做30次平均后,在12mm×12mm光斑范围内获得了均匀性为0.986的均匀照明光斑,满足CMOS图像传感器测试对光斑均匀性优于0.97的要求。     

Scaleable CMOS Current-Mode Preamplifier Design for an Optical Receiver

We have designed a process-insensitive preamplifierfor an optical receiver, fabricated it in several different minimumfeature sizes of standard digital CMOS, and demonstrated designscaleability of this analog integrated circuit design. The sameamplifier was fabricated in a 1.2 µm and two different0.8 µm processes through the MOSIS foundry [1].The amplifier uses a multi-stage, low-gain-per-stage approach.It has a total of 5 identical cascaded stages. Each stage isessentially a current mirror with a current gain of 3. Threeof these preamplifiers have been integrated with a GaAs Metal-Semiconductor-Metal (MSM) photodetector and one with anInGaAs MSM detector by using a thin-film epilayer device separationand bonding technology [2]. This quasi-monolithic front-end of anoptical receiver virtually eliminates the parasitics between thephotodetector and the silicon CMOS preamplifier. We have demonstratedspeed and power dissipation improvement as the minimum feature sizeof the transistors shrink.     

A CMOS 4× speed DVD read channel IC

Optical disk is a data storage medium of the highest density, and is widely used for compact disk and digital versatile disk (CD/DVD) players and read-only memory and random-access memory (ROM/RAM) drives. In this work, all functions for 1× speed DVD read channels are integrated on a single 0.8-μm CMOS chip. A ninth-order pulse slimming equalizer with two zeros is made programmable to cover a frequency range of over five octaves from 0.7 to 25 MHz with high-frequency boost of 12 db and group delay variation of less than ±3%. A one-beam tracking error detector features six allpass delay equalizers with a tunable delay range of 93 ns at 2 MHz. Other control functions integrated on the chip are three-beam tracking error generator, laser power control circuit, and detectors for track crossing, disk defect, signal envelope, focus error, etc. The chip occupies 25 mm² and consumes 500 mW at 5 V