Analog Devices has announced the availability of a new PLL (phase locked loop) synthesizer for applications in microwave point-to-point systems, PMR (private mobile radio), VSATs (very small aperture terminals), test and instrumentation equipment, and aerospace systems. The ADF4150HV 4.4 GHz fractional-N or integer-N PLL synthesizer features a 30-V charge pump. The device can be used to directly drive high tuning-voltage external VCOs (voltage controlled oscillators), therefore it eliminates the need for active loop filters.

The ADF4150HV is designed based on RF and PLL synthesizer design. It exhibits improved synthesizer phase noise performance by allowing the use of passive loop filter topologies. The frequency divider allows the VCO frequency to be divided by 2, 4, 8 or 16 thus allowing generation of output frequencies as low as 31.25 MHz. This system is used in systems that require high performance and wide tuning angle. It is supported by ADIsimPLL Version 3.3 design tool

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RF modulator - Wikipedia, the free encyclopedia

In North America, RF modulators generally output on channel 3 or 4 (VHF), although the Atari consoles offer channels 2 and 3. In Europe standard modulators use channel 36 (UHF) by ...

Amazon.com: Philips RF Modulator (PH61159): Electronics

RF modulator will work with DVD players, VCRs, TVs, and other audio/video components; Can be used on channel 3 or channel 4 on your TV to show other components that are hooked up

Channel 3/4 RF Modulator - Smarthome

Connect any video device to TVs without audio/video jacks with this affordable device!

RF Modulator - RadioShack.com

This RF Modulator converts the video and stereo audio from any ... to the modulator's input jacks, then connect the modulator to your TV's antenna/cable input and select channel 3 or 4 ...

Amazon.com: Recoton DVD647 RF Modulator: Electronics

4.0 out of 5 stars Recoton DVD647 RF Modulator, update your old TV, January 8, 2003

RF Modulator

The RF modulator converts the video (and/or audio) output of a DVD player (or camcorder or video game) into a channel 3/4 signal that is compatible with a TV's cable or antenna ...