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TRF3750: High Performance Integer-N PLL Frequency Synthesizer (Rev. B) - Texas Instruments Semiconductor
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TRF3750: High Performance Integer-N PLL Frequency Synthesizer (Rev. B) - Texas Instruments Semiconductor
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TRF3750: High Performance Integer-N PLL Frequency Synthesizer (Rev. B) - Texas Instruments Semiconductor
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TRF3750: High Performance Integer-N PLL Frequency Synthesizer (Rev. B) - Texas Instruments Semiconductor


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Text version of the page
TRF3750 SLWS146B - MARCH 2004 - REVISED AUGUST 2007 HIGH-PERFORMANCE INTEGER-N PLL FREQUENCY SYNTHESIZER FEATURES  Single Device Covers Frequencies Up to 2.4 GHz  Dual Supply Range: 3 V - 3.6 V and 4.5 V - 5.5 V  Separate Charge Pump Supply (VCP) Up to 8 V  Simple 3-Wire Serial Interface Allows for Fully Programmable: - A, B, and R Counters - Dual Modulus Prescaler [8/9, 16/17, 32/33, and 64/65] - Charge Pump Current  Lock Detect Output (Digital and Analog)  Versatile Hardware and Software Power Down  Packaged in a 16-Pin TSSOP Thin Quad FlatPack and a 20-Pin 4 x 4 mm QFN Package APPLICATIONS  Wireless Infrastructure - GSM, IS136, EDGE/UWC-136 - IS95, UMTS, CDMA2000  Portable Wireless Communications  Wireless LAN  Wireless Transceivers  Communication Test Equipment DESCRIPTION The TRF3750 frequency synthesizer is ideal for designing the local os cillator portion of wireless transceivers by providing complete programmability and ultra-low phase noise. The device features a user-selectable dualmodulus prescaler, a 14-bit reference (R) divider, a 6-bit A, and a 13-bit B counter. The R divider allows the user to select the frequency of choice for the phase-frequency detector (PFD) circuit, and with the use of the counters implement an N divider of value N = A + P x B. With an extended charge-pump supply (VCP) of up to 8 V, a wide variety of external VCOs can be used to complete the phase-locked loop. Ultra-low phase noise and reference spur performance make the TRF3750 ideal for generating the local oscillator in the most demanding wireless applications. 1 2 3 4 5 6 7 8 16 15 14 13 12 11 10 9 RSET CPOUT CPGND AGND RFIN RFIN AVDD REFIN VCP DVDD MUXOUT LE DATA CLOCK CE DGND PW PACKAGE (TOP VIEW) MUXOUT RGP PACKAGE (TOP VIEW) CPGND CPOUT RSET VCP DVDD DVDD REFIN DGND AVDD 1 2 3 4 5 15 14 13 12 11 6 7 8 9 10 20 19 18 17 16 AVDD DGND LE DATA CLOCK RFIN CE RFIN AGND AGND PRODUCTION DATA information is current as of publication date. Products conform to specifications per the terms of Texas Instruments standard warranty. Production processing does not necessarily include testing of all parameters. Please be aware that an important notice concerning availability, standard warranty, and use in critical applications of Texas Instruments semiconductor products and disclaimers thereto appears at the end of this data sheet. www.ti.com Copyright © 2007, Texas Instruments Incorporated
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