摘要:
A monolithic optical detector for determining spectral content of an incident light includes at least a first and second well in a substrate, the second well formed proximate the first well. The first well is configured to be exposed to incident light and for generating a first photocurrent as a function of the incident light. The second well is configured to be shielded from the incident light and for generating a second photocurrent as a function of the incident light. Lastly, a processing and control unit, responsive to the first and second photocurrents, determines an indication of spectral content of the incident light. A method and device parameter controller are also disclosed.
摘要:
Semiconductor structures for optoelectronic sensors with an infrared (IR) blocking filter and methods for using such sensors with post-detection compensation for IR content that passes through the IR blocking filter are provided herein.
摘要:
A clock deskewing apparatus uses either a series terminated single transmission line system or a Thevenin terminated dual transmission line system to deliver a clock signal to a load. A plurality of series terminated clock deskewing apparatuses are implemented, one for each load, so that the clock signal is delivered to all loads coupled to the clock signal simultaneously. Each series clock deskewing apparatus has a single termination resistor with the same impedance value as the transmission line that it is coupled to. Each Thevenin termination system has a voltage divider resistor network. A variable delay line within each series clock deskewing apparatus can be adjusted so that each load receives the clock signal at the same time. A programmable output driver impedance network can be used for the single line termination resistor of the series terminated clock deskewing system in order that the series terminated clock deskewing apparatus can be used with transmission lines having different line impedances. A three input phase detector is coupled to a fixed delay line and to either the series terminated transmission line system or the Thevenin terminated transmission line system for eliminating phase shifts of the clock signals between the different loads.
摘要翻译:时钟去歪斜设备使用串行终端单传输线路系统或Th + E,acu e + EE静电放电终端双传输线路系统,将时钟信号传送到负载。 实现了多个串联终止的时钟去歪斜设备,每个负载一个,使得时钟信号被同时传送到耦合到时钟信号的所有负载。 每个系列时钟去偏移装置具有与其耦合的传输线具有相同阻抗值的单个终端电阻。 每个Th + E,acu e + EE静电放电终端系统都有一个分压电阻网络。 可以调整每个系列时钟去偏移装置内的可变延迟线,使得每个负载同时接收时钟信号。 可编程输出驱动器阻抗网络可用于串联端接时钟反相校正系统的单线终端电阻,以便串联端接时钟去偏置设备可与具有不同线路阻抗的传输线路一起使用。 三输入相位检测器耦合到固定延迟线以及串联端接传输线系统或Th + E,acu e + EE venin终端传输线系统,以消除不同负载之间的时钟信号的相移。
摘要:
A timing based adaptive equalization circuit (10) dynamically monitors a signal received at an input terminal (16) and compensates for attenuation losses in the transmission of the signal by adjusting an equalization value that increases or decreases the equalization of the signal. A digital phase locked loop control circuit (26) centers the transition of the equalized signal in a delay line circuit (31). An analog delay locked loop circuit (29) provides a fixed throughput time for matching delay elements of delay line circuits (31, 41 and 51) in the adaptive equalization circuit (10). Timing signals propagating in the delay line circuits (31, 41 and 51) are stored in sampler circuits (36, 46 and 56). The equalization value for equalizing the input signal is adjusted based on stored logic values of specific storage elements in the sampler circuits (46 and 56).
摘要:
A data communication system employing predetermined equalized waveforms for transmit equalization is disclosed. Serial NRZ data is received from a network controller and utilized to select from memory its equivalent as predistorted and filtered Manchester encoded data. Predetermined waveforms in memory are representative of the analog waveform produced when predistorted digital Manchester encoded data is passed through a high order transmit filter. Data from memory drives a digital to analog converter (DAC) to reconstruct the waveforms into analog form. A line driver having an integrated single pole low pass filter impresses the equalized waveform on to the transmission line.
摘要:
A transimpedance amplifier includes a first amplifier, a first MOS resistor device and a first voltage divider circuit. The source terminal of the first MOS resistor device is coupled to the first amplifier inverting input. The voltage divider circuit is coupled between the first amplifier output and the non-inverting input. The output of the first voltage divider is coupled to the first MOS resistor drain terminal. A second amplifier, second MOS resistor device and a second voltage divider circuit is also provided. The output of the second amplifier is coupled to the gate terminal of the first MOS resistor device. The gate terminal of the second MOS resistor device is coupled to the second amplifier output. The drain terminal of the second MOS resistor device is coupled to the second amplifier non-inverting input. The second voltage divider circuit is coupled between the first amplifier output and the second MOS resistor device source terminal, and has an output coupled to the second amplifier inverting input.
摘要:
A series clock deskewing apparatus uses a series terminated single transmission line system to deliver a clock signal to a load. A plurality of series clock deskewing apparatuses are implemented, one for each load, so that the clock signal is delivered to all loads simultaneously. Each series clock deskewing apparatus has a single series termination resistor with the same impedance value as the transmission line to which it is coupled. For each load, the clock signal travels the transmission line from a clock generator to the load and is simultaneously applied to the deskewing apparatus. A clock signal is reflected at the load back to the deskewing apparatus. The roundtrip transit time is determined by the deskewing apparatus which causes an appropriate delay to adjust each clock signal to arrive synchronously at all the loads. A programmable output driver impedance network can be used for the single line termination resistor of the series terminated clock deskewing apparatus can be used with transmission lines having different line impedances.