Datasheet STMicroelectronics STW81200T — Ficha de datos

STW81200
Multi-band RF fractional/integer frequency synthesizer with integrated VCOs
Datasheet - preliminary data Supply Voltage: 3.0 V to 5.4 V Small size exposed pad VFQFPN36 package 6 x 6 x 1.0 mm Process: BICMOS 0.25 µm SiGe
VFQFPN36 Applications Features Output frequency range: 46.875 to 6000 MHz Very Low Noise ­ Normalized in band phase noise floor: -227 dBc/Hz ­ VCO phase noise: -135 dBc/Hz @ 1 MHz offset, 4.0 GHz carrier ­ Noise floor: -160 dBc/Hz Dual architecture frequency synthesizer: Fractional-N and Integer-N Integrated VCOs with automatic center frequency calibration Programmable RF output dividers by 1/2/4/8/16/32/64 Dual RF Output broadband matched with programmable power level and mute function External VCO option with 5 V charge pump Integrated low noise LDO voltage regulators Maximum phase detector frequency: 100 MHz Exact frequency mode Fast lock and cycle slip reduction Differential reference clock input (LVDS and LVECPL compliant) supporting up to 800 MHz 13-bit programmable reference frequency divider Programmable charge pump current Digital lock detector Integrated reference crystal oscillator core R/W SPI interface Logic compatibility/tolerance 1.8 V/3.3 V Low Power Functional mode
April 2014 Cellular/4G infrastructure equipment Instrumentation and test equipment Cable TV Other wireless communication systems Table 1. Device summary
Order Code STW81200T STW81200TR Package VFQFPN36 VFQFPN36 Packing Tray Tape and reel Description
The STW81200 is a dual architecture frequency synthesizer (Fractional-N and Integer- N), that features three low phase noise VCOs with a fundamental frequency range of 3.0 GHz to 6.0 GHz and a programmable dual RF output divider stage which allows to cover from 46.875 MHz to 6 GHz. The STW81200 optimizes size and cost of the final application thanks to the integration of low noise LDO voltage regulators and internally broadband matched RF outputs. The STW81200 is compatible with a wide range of supply voltage (from 3.0 V to 5.4 V) providing to the end user a very high level of flexibility which trades off excellent performance with power dissipation requirements. A low power functional mode (software-controlled) gives an extra power saving. Additional features include crystal oscillator core, external VCO mode and output mute function. DocID025943 Rev 2 1/53
www.st.com This is preliminary information on a new product now in development or undergoing evaluation. Details are subject to change without notice Contents STW81200 Contents
1 2 3 4 5 6 7 Functional block diagram . 5 Pin definitions 6 Absolute maximu …