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Aero dual-band W-CDMA RF frequency synthesizers
This highly integrated, low-power RF synthesizer for W-CDMA supports IF and dual-band, low-noise RF frequency synthesis. It uses a 75% smaller footprint, improves power efficiency, and eliminates external interference.
General description
The NXP Aero dual-band W-CDMA RF frequency synthesizer AERO4133 performs IF and dual-band, low-noise RF frequency synthesis with very low power consumption and in a footprint that is 75% smaller than competing solutions. It is available in versions optimized for GSM/GPRS and W-CDMA.
Very high integration serves to reduce external component count and shrink the design footprint. It includes three voltage-controlled oscillators (VCOs), loop filters, reference and VCO dividers, and phase detectors.
A three-wire serial interface (Data, Clock, Enable) and a 22-bit internal shift register serve to simplify system configuration and design. Channel selection and power-down settings are programmable, as are variables for dividers and settings for phase-detector gains.
Features
- Dual-band RF synthesizer
- RF1 VCO range = 2.3 to 2.6 GHz
- RF2 VCO range = 750 MHz to 1.5 GHz
- IF synthesizer
- IF output range = 62.5 MHz to 1.0 GHz
- Fully integrated VCOs
- Programmable loop filters
- Programmable power-down modes
- Only two external passive components
- Automatic selection of optimal phase-detector gain and modulus-prescaler values
- Low phase noise
- Fast settling times: 200 µS for GSM applications
- Standby current at 3 V = 5 µA
- Supply current at 3 V = 18 mA
- Operation: 2.9 to 3.6 V
- Process technology: 0.35-�m CMOS
- 28-lead MLP package
Applications
- 3G wireless communications
- UMTS/W-CDMA mobile handsets
- High-speed wireless data terminals
- Broadband wireless communications