SKY73112-11

DATA SHEET SKY73112-11: 750-850 MHz High Performance VCO/Synthesizer With Integrated Switch Applications x 2G, 2.5G, and 3G base station transceivers:  GSM, EDGE, CDMA, WCDMA x General purpose RF systems Features x Frequency operation range: 750 to 850 MHz x Process-tolerant compensation for VCO x 24-bit 6' fractional-N synthesizer x Ultra-fine frequency resolution of 0.001 ppm x Flexible reference frequency selection x Three-wire serial interface up to 20 MHz clock frequency x Integrated PLL supply regulation for spur isolation x MCM (38-pin, 9 x 12 mm) SMT package (MSL3, 260 qC per JEDEC J-STD-020) Description Skyworks SKY73112-11 Voltage-Controlled Oscillator (VCO)/Synthesizer is a fully integrated, high performance signal source for high dynamic range transceivers. The device provides ultra-fine frequency resolution, fast switching speed, and low phase noise performance for 2G, 2.5G, and 3G base station transceivers. The SKY73112-11 VCO/Synthesizer is a key building block for high-performance radio system designs that require low power and a fine step size. Reference clock generators with an output frequency up to 52 MHz can be used with the SKY73112-11. A functional block diagram is shown in Figure 1. As indicated in this diagram, the reference frequency is divided down by 1, 2, 4, or 8 in the R1 divider, depending on the value of the reference divisor input (R1). Refer to the Reference Input Divider section (page 10) for more information. The SKY73112-11 VCO/Synthesi...