Description
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RFLC GNDR RFLB RFLA GNDR GNDR RFOUT
The Si4133 is a monolithic integrated circuit that performs both IF and dualband RF synthesis for wireless communications applications.The Si4133 includes three VCOs, loop filters, reference and VCO dividers, and phase detectors.Divider and powerdown settings are programmable with a threewire serial interface.Functional Block Diagram
VDDR
XIN
SDATA
IFOUT
GNDR
Reference Amplifier
Powerdown Control
R
Si4133-GM
SCLK
RF1
Features
- Dual-band RF synthesizers.
- RF1:.
- 900 MHz to 1.8 GHz.
- RF2: 750 MHz to 1.5 GHz.
- IF synthesizer.
- IF:
62.5 to 1000 MHz
Integrated VCOs, loop filters,.
- varactors, and resonators Minimal (2) number of external components required
Low phase noise Programmable powerdown modes 1 µA standby current 18 mA typical supply current 2.7 to 3.6 V operation Packages: 24-pin TSSOP, 28-lead QFN.
- Lead-free
Ordering Information: See.