VCTCXOs target femtocell applications
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AEL Crystals has improved the performance of its VT53 range of VCTCXOs, which is aimed at the growing small cell market.
Initially available in the frequency range 10 to 26MHz, the oscillators are available in an ultra compact 5 x 3.2mm package.
They are rated at +/-100ppb (+/-0.10ppm) stability over a temperature range of 30 to 65°C; rising to +/-250ppb, +/-0.25ppm when operating at temperatures from -40 to 80°C.
The devices have been characterised for use with the growing range of chipsets available for femtocell development, and are said to increase network data range and throughput.
In addition to base stations, they can be used in ultra high stability applications. Stability with respect to load and voltage changes has been improved to meet +/10ppb and ageing is specified to +/-3.0ppm maximum over 10 years.
The VCTCXOs are available with clipped sine outputs and offer low power consumption (<2.0mA, <6.0mW typical). They operate from 3.3V and have strong hysteresis and holdover characteristics.
