I would like to drive LTC1043 (Dual Precision Instrumentation Switched Capacitor Building Block)'s clock externally. In the datasheet (http://www.analog.com/media/en/technical-documentation/data-sheets/1043fa.pdf ), it is stated that "The LTC1043 can also be driven with an external CMOS clock". Then, i figure out it can be driven from the pin number 16 (Cosc).
My question is how can I simulate this clock working in LTSPICE? And How can I make sure that the internal clock frequency is actually the clock I applied externally? This is important for me because i will use this clock rate to simulate a switched capacitor resistance emulation and this resistance value depends on the clock rate.