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    • 1. 发明授权
    • Semiconductor test system having double data rate pin scrambling
    • 具有双数据速率引脚扰码的半导体测试系统
    • US06754868B2
    • 2004-06-22
    • US09895439
    • 2001-06-29
    • Steven R. BristowPaul MaglioccoSeth W. Craighead
    • Steven R. BristowPaul MaglioccoSeth W. Craighead
    • G01R3128
    • G01R31/31917G01R31/31919G01R31/31921G01R31/31922
    • A method and apparatus are provided for high speed testing of devices having either logic circuits, memory arrays or both. Apparatus (100) includes: (i) pin electronics (P/Es 145) each coupling the apparatus to one of a number of pins (115) on device (110); (ii) timing and format circuits (T/Fs 150) for mapping a signal to one of P/Es (100); (iii) pattern generator (140) having a number of outputs for outputting signals for testing device (110); (iv) pin scrambling circuit (155) between pattern generator (140) and T/Fs (150), the pin scrambling circuit capable of mapping at least two signals from any of the pattern generator outputs to any of the T/Fs; and (v) clock (135) for providing a clock signal having a clock cycle to pattern generator (140) and T/Fs (150). T/Fs (150) are capable of switching the signals coupled to P/Es (100) at least twice each clock cycle.
    • 提供了一种方法和装置,用于具有逻辑电路,存储器阵列或两者的装置的高速测试。 装置(100)包括:(i)每个将装置连接到装置(110)上的多个销(115)中的一个的销电子装置(P / Es145); (ii)用于将信号映射到P / Es(100)之一的定时和格式电路(T / Fs 150); (iii)具有多个用于输出测试装置(110)的信号的输出的模式发生器(140); (iv)在模式发生器(140)和T / F(150)之间的引脚加扰电路(155),所述引脚加扰电路能够将来自任何模式发生器输出的至少两个信号映射到任何T / F; 和(v)时钟(135),用于向模式发生器(140)和T / F(150)提供具有时钟周期的时钟信号。 T / F(150)能够将每个时钟周期至少两次切换耦合到P / Es(100)的信号。
    • 3. 发明授权
    • Device under test power supply
    • 被测设备电源
    • US07999530B2
    • 2011-08-16
    • US12408157
    • 2009-03-20
    • Patrick SullivanSteven R. BristowWilliam Robert CreekJeffrey Allen King
    • Patrick SullivanSteven R. BristowWilliam Robert CreekJeffrey Allen King
    • H02M3/156G01R31/40
    • H03F3/72H03F3/45475
    • A power supply with and input and output includes an amplifier configured to set an output voltage of the power supply output equal to a fixed input voltage for the power supply. The power supply has a first output stage coupled to the amplifier and configured to source and sink current at the output of the power supply between a first voltage rail and a third voltage rail. The power supply has a second output stage coupled to the amplifier and configured to source and sink current to the output of the power supply between a second voltage rail and the third voltage rail. A selection device is configured to enable the first and second output stages based on a selection input signal. The selection device is situated outside of the first and the second output stages.
    • 具有输入和输出的电源包括放大器,其配置为将电源输出的输出电压设置为等于电源的固定输入电压。 电源具有耦合到放大器的第一输出级,并且被配置为在第一电压轨和第三电压轨之间的电源的输出处源极和吸收电流。 电源具有耦合到放大器的第二输出级,并且被配置为将电流源流和吸收到第二电压轨和第三电压轨之间的电源的输出。 选择装置被配置为基于选择输入信号启用第一和第二输出级。 选择装置位于第一和第二输出级之外。