Quad band VCOs do not compromise on wideband or noise
Microwave applications need not compromise phase noise performance, in favour of wideband capabilities, says Analog Devices. The company has announced HMC8074, HMC8362 and HMC8364 quad band voltage controlled oscillators (VCOs) that offer a wider RF response and more frequency flexibility than narrowband VCOs, says ADI.
They also provide lower phase noise than traditional single band wideband VCOs, while continuing to provide low current consumption. These features enable faster time to market for the end applications, adds ADI.
The quadband VCO series offers wideband capabilities with fundamental frequencies ranging from 8.3 to 26.6GHz. In addition to providing low phase noise, the VCOs do not generate sub-harmonic frequency tones. This combination of wideband capability and low phase noise is essential in many of today’s high-end instrumentation and aerospace and defence applications, notes ADI.
The quadband VCOs integrate fundamental oscillators, resulting in no sub-harmonic tones being generated by any multiplication effects in the device. There is a short switching time between VCO bands without voltage overshoot and a low supply current consumption, down to 60mA (typical). The tuning voltage is lower than traditional single band wideband VCOs, and the narrower sensitivity versus frequency, reduces the complexity of the loop filter design
The VCOs are available now and supplied in a small 40-lead 6.0 x 6.0mm LFCSP SMT package.
