For price, delivery and to place orders: Hittite Microwave Corporation, 2 Elizabeth Drive, Chelmsford, MA 01824

Phone: 978-250-3343

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10

HMC702LP6CE

v10.0812

14 GHz 16-BIT FRACTIONAL-N PLL

Figure 4. Reference Path Block Diagram

VCO Path

the rF path from the Vco to the phase detector, is referred to as the Vco path. the Vco path consists of an input

isolation buffer and a multi-modulus prescaler, or simply the n divider. the n divider is controlled by the fractional

modulator. this path operates with inputs directly from the external Vco.

RF Input Stage

the synthesizer rF input stage routes the external Vco to the phase detector via a 16-bit fractional divider. the input

is protected by ESD diodes as shown in Figure 5.

Figure 5. RF Input Stage

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