SI4126

Si4136/Si4126 I S M R F S Y N T H E S I ZE R W I T H I N T E G R A T E D V C O S F O R W I R E LE S S C O M M U N I C A T I O N S Features  Dual-band RF synthesizers RF1:       2300 MHz to 2500 MHz RF2: 2025 MHz to 2300 MHz   IF synthesizer 62.5 MHz to 1000 MHz Integrated VCOs, loop filters, varactors, and resonators Minimal external components required Low phase noise 5 µA standby current 25.7 mA typical supply current 2.7 V to 3.6 V operation Packages: 24-pin TSSOP, 28-lead QFN  Lead-free/RoHS-compliant options Ordering Information: See page 29. available Pin Assignments Applications   Si4136-BT/GT  ISM and MMDS band communications Wireless LAN and WAN Dual-band communications SCLK SDATA GND 1 2 3 4 5 6 7 8 9 10 11 12 24 23 22 21 20 19 18 17 16 15 14 13 SEN VDDI IFOUT GND IFLB IFLA GND VDDD GND XIN PWDN AUXOUT Description The Si4136 is a monolithic integrated circuit that performs both IF and RF synthesis for wireless communications applications. The Si4136 includes three VCOs, loop filters, reference and VCO dividers, and phase detectors. Divider and powerdown settings are programmable through a three-wire serial interface. http://www.DataSheet4U.net/ GND NC GND NC GND GND Functional Block Diagram Reference Amplifier Power Down Control GND RFOUT XIN ÷1/÷2 RRF1 Phase Detect RF1 VDDR PWDN NRF1 RRF2 Phase Detect 2 RFOUT Si4136-BM/GM SDATA IFOUT SCLK VDDI GND SEN GND SDATA SCLK SEN Serial Interface 22-bit Data Register ...