The SP5658 is a single chip frequency synthesiser designed for tuning systems up to 2.7GHz. The RF preamplifer contains a divide by two prescaler which can be disabled for applications up to 2GHz so enabling a step size equal to the comparison frequency up to 2GHz and twice the comparison frequency up to 2.7GHz. Comparison frequencies are obtained either from a crystal controlled on–chip oscillator or from an external source. The device contains two switching ports, in the 14 pin version and four in the 16 pin, together with an ‘‘in–lock” flag output. The device also contains a varactor line disable and charge pump disable facility.
The SP5658 is a complete 2.7GHz single chip system optimized for low phase noise applications such as SAT, TV, VCR, cable tuning, and communications systems. It features an RF preamplifier with a selectable divide-by-two prescaler to support step sizes equal to the comparison frequency up to 2GHz.
| Maximum Frequency | 2.7GHz |
|---|---|
| Operating Temperature Range | -20°C to +80°C |
It is designed for SAT, TV, VCR and Cable tuning systems as well as Communications systems.
Yes, the RF preamplifier contains a divide by two prescaler which can be disabled for applications up to 2GHz.