8 GHz 19-Bit Fractional-N PLL

The HMC704 has been designed for the best phase noise and lowest spurious content possible in an integrated synthesizer. Fabricated in a SiGe BiCMOS process, this Fractional-N frequency synthesizer consists of a very low noise digital phase detector, VCO divider, reference divider and a precision controlled charge pump.

Ultra low in-close phase noise and low spurious allows wide loop bandwidths for faster frequency hopping and low micro-phonics. Exact frequency mode with 24-bit fractional modulator provides the ability to generate fractional frequencies with zero frequency error, an important feature for Digital Pre-Distortion systems.

The serial interface offers read back capability and is compatible with a wide variety of protocols.

Rochester Electronics has partnered with Analog Devices to offer continuity of supply for this product which has now become EOL at Analog Devices. Please contact adirf@rocelec.com for ordering support for this EOL product.

Applications

* Microwave Point-to-Point Radios

* Base Stations for Mobile Radio

(GSM, PCS, DCS, CDMA, WCDMA)

* Wireless LANs, WiMAX

* Communications Test Equipment

* CATV Equipment

* Automotive

* Wide band: DC - 8 GHz RF Input, 4 GHz 19-Bit Prescaler

* Industry Leading Phase Noise & Spurious -112 dBc/Hz @ 8 GHz Fractional, 50 kHz Offset

*

-230 dBc/Hz Frac. Mode

* -233 dBc/Hz Int. Mode 100 MHz PFD

* High PFD rate: 100 MHz

* 24 Lead 4x4mm SMT

Package: 16mm²