Hello,

What are the best choices of HMC PLLs (External VCO) for designing a wideband PLL (1-10 MHz closed loop), and what are the recommended op amps for active filters?

Best regards,

Hussein

Hello,

What are the best choices of HMC PLLs (External VCO) for designing a wideband PLL (1-10 MHz closed loop), and what are the recommended op amps for active filters?

Best regards,

Hussein

- 1 person found this helpful
HMC703 is a integer/fractional-N PLL with sweeper for FMCW radar applications.

HMC704 is similar to the HMC703 but does not have any sweeper capability.

HMC701 is similar to the HMC703 but allows differential VCO and reference connections. FOM is -221 dBc/Hz compared to -227 dBc/Hz for the HMC703. Keep in mind all these parts have minimum N specifications. For example the HMC704 in fractional mode requires N>=20. With 1MHz VCO input the max PFD frequency is 50 KHz -- this reduces phase noise performance as shown by EQ1 in the datasheet.

If you do not require fractional operation consider HMC1031. This tiny PLL performs a jitter cleaner function and does not require any software configuration. Two pins select the N multiplier (x1, x5 or x10).

Use the AD8065 opamp for active filter circuits.

HMC703 is a integer/fractional-N PLL with sweeper for FMCW radar applications.

HMC704 is similar to the HMC703 but does not have any sweeper capability.

HMC701 is similar to the HMC703 but allows differential VCO and reference connections. FOM is -221 dBc/Hz compared to -227 dBc/Hz for the HMC703. Keep in mind all these parts have minimum N specifications. For example the HMC704 in fractional mode requires N>=20. With 1MHz VCO input the max PFD frequency is 50 KHz -- this reduces phase noise performance as shown by EQ1 in the datasheet.

If you do not require fractional operation consider HMC1031. This tiny PLL performs a jitter cleaner function and does not require any software configuration. Two pins select the N multiplier (x1, x5 or x10).

Use the AD8065 opamp for active filter circuits.