Si4136/Si4126 ISM RF SYNTHESIZER WITH INTEGRATED VCOS FOR WIRELESS COMMUNICATIONS - Silicon Laboratories - #1

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Rev. 1.41 1/10 Copyright © 2010 by Silicon Laboratories Si4136/Si4126 Si4136/Si4126 ISM RF SYNTHESIZER WITH INTEGRATED VCOS FOR WIRELESS COMMUNICATIONS Features Applications 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. Functional Block Diagram ƒÞ Dual-band RF synthesizers ƒÜƒnRF1: 2300 MHz to 2500 MHz ƒÜƒnRF2: 2025 MHz to 2300 MHz ƒÞ IF synthesizer ƒÜƒn62.5 MHz to 1000 MHz ƒÞ Integrated VCOs, loop filters, varactors, and resonators ƒÞ Minimal external components required ƒÞ Low phase noise ƒÞ 5 ìA standby current ƒÞ 25.7 mA typical supply current ƒÞ 2.7 V to 3.6 V operation ƒÞ Packages: 24-pin TSSOP, 28-lead QFN ƒÜƒnLead-free/RoHS-compliant options available ƒÞ ISM and MMDS band communications ƒÞ Wireless LAN and WAN ƒÞ Dual-band communications IFOUT IFLA IFLB RFOUT XIN PWDN SDATA SCLK SEN IF RF2 RF1 AUXOUT Phase Detect Phase Detect „i2 „i2 Phase IFDIV Detect Test Mux 22-bit Data Register Serial Interface Power Down Control Reference Amplifier „iRRF1 „iRRF2 „iRIF „iNRF1 „iNRF2 „iNIF ÷1/÷2 Patents pending Ordering Information: See page 29. Pin Assignments Si4136-BT/GT Si4136-BM/GM SCLK SDATA GND GND NC GND NC GND GND GND RFOUT VDDR SEN VDDI IFOUT GND IFLB IFLA GND VDDD GND XIN PWDN AUXOUT 1 2 3 4 5 6 7 8 9 10 11 12 24 23 22 21 20 19 18 17 16 15 14 13 SCLK SDATA GND GND NC NC GND GND RFOUT VDDR SEN VDDI IFOUT GND IFLB IFLA GND VDDD GND XIN PWDN AUXOUT 21 20 19 18 17 16 15 8 9 10 11 12 13 14 28 27 26 25 24 23 22 1 2 3 4 5 6 7 GND GND GND GND GND GND GND