会员体验
专利管家(专利管理)
工作空间(专利管理)
风险监控(情报监控)
数据分析(专利分析)
侵权分析(诉讼无效)
联系我们
交流群
官方交流:
QQ群: 891211   
微信请扫码    >>>
现在联系顾问~
热词
    • 10. 发明申请
    • Track and Hold Amplifiers and Digital Calibration for Analog-to-Digital Converters
    • 跟踪和保持放大器和模数转换器的数字校准
    • US20120188109A1
    • 2012-07-26
    • US13010285
    • 2011-01-20
    • Mihai Adrian TIberiu SanduleanuJean-Olivier PlouchartZeynep Toprak Deniz
    • Mihai Adrian TIberiu SanduleanuJean-Olivier PlouchartZeynep Toprak Deniz
    • H03M1/10G11C27/02
    • G11C27/02H03M1/1061H03M1/365
    • An exemplary differential track and hold amplifier includes a track stage including first and second linearized pairs connected in series at their respective inputs and in parallel at their respective outputs. The differential track and hold amplifier also includes a hold stage selectively coupled to the outputs of the first and second linearized pairs. The hold stage includes a unity gain buffer with feedback having a hold capacitor interconnected across its outputs. The differential track and hold amplifier also includes an output buffer coupled to the outputs of the hold stage. An exemplary analog-to-digital converter includes a differential track-and-hold amplifier, a voltage ladder, and a plurality of slices. Each of the slices in turn includes a differential preamplifier coupled to the track-and-hold amplifier and to a corresponding location on the voltage ladder; a current mode logic latch comparator coupled to the differential preamplifier; a large-swing latch coupled to the current mode logic latch comparator; a complementary metal oxide semiconductor latch having a dummy load; a calibration digital to analog converter connected across outputs of the differential preamplifier to inject calibration currents; and a register coupled to the calibration digital to analog converter and storing calibration values for use thereby. The analog-to-digital converter also includes a multiplexer which multiplexes outputs of the complementary metal oxide semiconductor latches down to a predetermined number of outputs.
    • 示例性的差分跟踪和保持放大器包括轨道平台,该轨道平台包括在其各自的输入处并联并联的第一和第二线性化对,并且在它们各自的输出处并联。 差分跟踪和保持放大器还包括选择性地耦合到第一和第二线性化对的输出的保持级。 保持级包括具有反馈的单位增益缓冲器,其具有在其输出端互连的保持电容器。 差分跟踪和保持放大器还包括耦合到保持级的输出的输出缓冲器。 示例性模数转换器包括差分跟踪保持放大器,电压梯和多个片。 每个切片依次包括耦合到跟踪保持放大器和电压梯上相应位置的差分前置放大器; 耦合到差分前置放大器的电流模式逻辑锁存比较器; 耦合到电流模式逻辑锁存比较器的大摆动锁存器; 具有虚拟负载的互补金属氧化物半导体锁存器; 连接在差分前置放大器的输出端的校准数模转换器,以注入校准电流; 以及耦合到校准数模转换器的寄存器,并存储用于其的校准值。 模数转换器还包括多路复用器,其将互补金属氧化物半导体锁存器的输出多路复用到预定数量的输出。