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SI4112-BM Datasheet(PDF) 1 Page - List of Unclassifed Manufacturers |
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SI4112-BM Datasheet(HTML) 1 Page - List of Unclassifed Manufacturers |
1 / 34 page Rev. 1.1 3/01 Copyright © 2001 by Silicon Laboratories Si4133-DS11 This information applies to a product under development. Its characteristics and specifications are subject to change without notice. Si413 3 Si4 123 /2 2/13 /1 2 D UAL -B AND RF S YNT H ESIZ E R W IT H I N T EGRATED VC O S F OR WIRELE S S C OM MUNICAT IONS Features Applications Description The Si4133 is a monolithic integrated circuit that performs both IF and dual- band RF synthesis for wireless communications applications. The Si4133 includes three VCOs, loop filters, reference and VCO dividers, and phase detectors. Divider and power-down settings are programmable through a three-wire serial interface. Functional Block Diagram ! Dual-Band RF Synthesizers " RF1: 900 MHz to 1.8 GHz " RF2: 750 MHz to 1.5 GHz ! IF Synthesizer " IF: 62.5 MHz to 1000 MHz ! Integrated VCOs, Loop Filters, Varactors, and Resonators ! Minimal (2) External Components Required ! Low Phase Noise ! Programmable Power Down Modes ! 1 µA Standby Current ! 18 mA Typical Supply Current ! 2.7 V to 3.6 V Operation ! Packages: 24-Pin TSSOP, 28-Lead MLP ! Dual-Band Communications ! Digital Cellular Telephones GSM, DCS1800, PCS1900 ! Digital Cordless Phones ! Analog Cordless Phones ! Wireless LAN and WAN IFO U T IFL A IFL B RFO UT XIN P W DNB SD AT A SC LK SENB IF RF2 RF1 Pow e r Down Con trol Refe re nce A m p lifie r Serial In te rfa ce AU XO U T IFD IV ÷ R ÷ R ÷ R ÷ N ÷ N ÷ N Pha se Detecto r 22-b it Data Reg ister Te st Mux RFLC RFLD RFLA RFLB Pha se Detecto r Pha se Detecto r Patents pending Ordering Information: See page 31. Pin Assignments Si4133-BT Si4133-BM 124 223 322 421 520 619 718 817 916 10 15 11 14 12 13 SCLK SDA TA GNDR RFLD RFLC RFLB GNDR RFLA GNDR GNDR RFOUT V DDR SENB V DDI IFOUT GNDI IFLB IFLA GNDD V DDD GNDD XIN PWDNB AUXOUT RFLD RFLC RFLB GNDR RFLA GNDI IFLB IFLA VDDD GNDD XIN 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 GNDR GNDR GNDD |
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