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A Self-Clocked ASIC Interface for MEMS Gyroscope with 1m°/s√Hz
A Self-Clocked ASIC Interface for MEMS Gyroscope with 1m°/s√Hz

... C. Capacitance to Voltage Front End (C/V) Interface The capacitance-to-voltage front end (C/V) interface, shown in Fig. 3, is implemented using a switched capacitor amplifier. The excitation signal is applied as a square wave common-mode signal on the Proof Mass (PM) of the mechanical element. This ...
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... The design of the AD711 gives careful attention to optimizing individual circuit components; in addition, a careful tradeoff was made: the gain bandwidth product (4 MHz) and slew rate (20 V/ms) were chosen to be high enough to provide very fast settling time but not too high to cause a significant r ...
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Heterodyne



Heterodyning is a radio signal processing technique invented in 1901 by Canadian inventor-engineer Reginald Fessenden, in which new frequencies are created by combining or mixing two frequencies. Heterodyning is used to shift one frequency range into another, new one, and is also involved in the processes of modulation and demodulation. The two frequencies are combined in a nonlinear signal-processing device such as a vacuum tube, transistor, or diode, usually called a mixer. In the most common application, two signals at frequencies f1 and f2 are mixed, creating two new signals, one at the sum f1 + f2 of the two frequencies, and the other at the difference f1 − f2. These new frequencies are called heterodynes. Typically only one of the new frequencies is desired, and the other signal is filtered out of the output of the mixer. Heterodynes are related to the phenomenon of ""beats"" in acoustics.A major application of the heterodyne process is in the superheterodyne radio receiver circuit, which is used in virtually all modern radio receivers.
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