9173B

The 9173B provide the analog PLL circuit blocks to implement a frequency multiplier. Because the device is configured to use an external divider in the PLL clock feedback path, a large divider can be used to result in a large frequency multiplication ratio. This is useful when using a low frequency input clock to generate a high frequency output clock. The 9173B contains a phase detector, charge pump, loop filter, and voltage-controlled oscillator (VCO). The 674-01 can be used as the external feedback divider. A common application of the 9173B is the implementation of a video genlock circuit. Because of this, the 9173B inputs operate on the negative-going clock edge. The 9173B is pin and function compatible to the AV9173-01/15.