STW81200 Datasheet, PDF (1/58 Pages) STMicroelectronics – Wideband RF PLL fractional/integer frequency synthesizer with integrated VCOs and LDOs

STW81200
Wideband RF PLL fractional/integer frequency synthesizer
with integrated VCOs and LDOs
Datasheet - production data
VFQFPN36
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
• 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
Applications
• Cellular/4G infrastructure equipment
• Instrumentation and test equipment
• Cable TV
• Other wireless communication systems
Table 1. Device summary
Order Code
Package
Packing
STW81200T
STW81200TR
VFQFPN36
VFQFPN36
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 coverage 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-
matched broadband RF outputs.
The STW81200 is compatible with a wide range
of supply voltages (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.
January 2016
DocID025943 Rev 7
1/58
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