开关电容仪表的应用

　　CMOS模拟集成电路设计主要是基于操作电荷。开关和电容是使用的元素控制和分发费用。整体式过滤器，数据转换器和电压转换器依靠优秀CMOS开关的特性。因为重要性在他们的电路开关，CMOS设计师发展的技术，以尽量减少开关引起的错误，特别是那些与杂散电容和开关时间。到现在为止，这些技术已被使用只有在单片器件内部结构。一新的设备，LTC1043，使得这些开关板级使用。多极开关与自驱动，非重叠时钟允许在电路中使用的设备这是不切实际的与其他开关。

　　Conceptually， the LTC1043 is simple. Figure 1 details its features. The oscillator， free-running at 200kHz， drives a non-overlapping clock. Placing a capacitor from Pin 16 to ground shifts the oscillator frequency downward to any desired point. The pin may also be driven from an external source， synchronizing the switches to external circuitry. A non-overlapping clock controls both DPDT switch sections. The non-overlapping drive prevents simultaneous conduction in the series connected switch sections.

　　Charge balancing circuitry cancels the effects of stray capacitance. Pins 1 and 10 may be used as guard points for Pins 3 and 12 in particularly sensitive applications