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TRF3750 Dataheets PDF



Part Number TRF3750
Manufacturers Texas Instruments
Logo Texas Instruments
Description HIGH-PERFORMANCE INTEGER-N PLL FREQUENCY SYNTHESIZER
Datasheet TRF3750 DatasheetTRF3750 Datasheet (PDF)

www.ti.com TRF3750 SLWS146B − MARCH 2004 − REVISED AUGUST 2007 HIGH-PERFORMANCE INTEGER-N PLL FREQUENCY SYNTHESIZER FEATURES D Single Device Covers Frequencies Up to 2.4 GHz D Dual Supply Range: 3 V − 3.6 V and 4.5 V − 5.5 V D Separate Charge Pump Supply (VCP) Up to 8 V D 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 D Lock Detect Output (Digital and Analog) D Versatile Hardwar.

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www.ti.com TRF3750 SLWS146B − MARCH 2004 − REVISED AUGUST 2007 HIGH-PERFORMANCE INTEGER-N PLL FREQUENCY SYNTHESIZER FEATURES D Single Device Covers Frequencies Up to 2.4 GHz D Dual Supply Range: 3 V − 3.6 V and 4.5 V − 5.5 V D Separate Charge Pump Supply (VCP) Up to 8 V D 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 D Lock Detect Output (Digital and Analog) D Versatile Hardware and Software Power Down D Packaged in a 16-Pin TSSOP Thin Quad FlatPack and a 20-Pin 4 x 4 mm QFN Package APPLICATIONS D Wireless Infrastructure − GSM, IS136, EDGE/UWC−136 − IS95, UMTS, CDMA2000 D Portable Wireless Communications D Wireless LAN D Wireless Transceivers D 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. PW PACKAGE (TOP VIEW) RSET CPOUT CPGND AGND RFIN RFIN AVDD REFIN 1 2 3 4 5 6 7 8 16 VCP 15 DVDD 14 MUXOUT 13 LE 12 DATA 11 CLOCK 10 CE 9 DGND RGP PACKAGE (TOP VIEW) CPOUT RSET VCP DVDD DVDD CPGND AGND AGND RFIN RFIN 1 20 19 18 17 16 15 2 14 3 13 4 12 5 11 6 7 8 9 10 MUXOUT LE DATA CLOCK CE AVDD AVDD REFIN DGND DGND 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. 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. Copyright © 2007, Texas Instruments Incorporated TRF3750 SLWS146B − MARCH 2004 − REVISED AUGUST 2007 www.ti.com This integrated circuit can be damaged by ESD. Texas Instruments recommends that all integrated circuits be handled with appropriate precautions. Failure to observe proper handling and installation procedures can cause damage. ESD damage can range from subtle performance degradation to complete device failure. Precision integrated circuits may be more susceptible to damage because very small parametric changes could cause the device not to meet its published specifications. FUNCTION.


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