器件名称:
SP5768MP1T
功能描述:
3.0 GHz Low Phase Noise Frequency Synthesiser
文件大小:
104.8KB 共10页
简 介:
SP5768 SP5768 3.0 GHz Low Phase Noise Frequency Synthesiser November 2004 Features Complete 3.0GHz single chip system Optimised for low phase noise, with comparison frequencies up to 4 MHz No RF prescaler Selectable reference division ratio Reference frequency output Selectable charge pump current Integrated loop amplifier Four switching ports Low power replacement for SP5658 and 5668 Downwards software compatible with SP5658 ESD protection, (Normal ESD handling procedures should be observed) Ordering Information SP5768/KG/MP1S (Tubes) SP5768/KG/MP1T (Tape and Reel) Description The SP5768 is a single chip frequency synthesiser designed for tuning systems up to 3.0GHz and is optimized for low phase noise with comparison frequencies up to 4 MHz. The RF programmable divider contains a front end dual modulus 16/17 functioning over the full operating range and allows for coarse tuning in the upconverter application and fine tuning in the downconverter. Comparison frequencies are obtained either from a crystal controlled on-chip oscillator or from an external source. A buffered reference frequency output is also available to drive a second SP5768. The device also contains 4 switching ports. Applications TV, VCR and Cable tuning systems Communications systems REF 13 BIT COUNT RF INPUT 16/17 4 BIT COUNT REFERENCE DIVIDER CRYSTAL CAP CRYSTAL CHARGE PUMP DRIVE 17 BIT LATCH 6 BIT LATCH DATA CLOCK ENABLE DATA INTERFACE 5 BIT LATCH & PORT/ TEST MODE INTERFACE ……
