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TRF3750: High Performance Integer-N PLL Frequency Synthesizer (Rev. B)
Texas Instruments
Description
The TRF3750 frequency synthesizer is ideal for designing the local oscillator portion of wireless transceivers by providing complete programmability and ultra-low phase noise. The device features a user-selectable dual-modulus 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 × 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.
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 ESD Protection Circuitry 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
Related Datasheets
| Part Number | Description | Category |
| • CDCE421 | Fully Integrated Wide Range Low-Jitter Crystal Oscillator Clock Generator (Rev. A) | Actives - Transistors and Diodes |
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