ADRF6704ACPZ-R7

ANALOG DEVICES  ADRF6704ACPZ-R7  芯片, 射频模块, 2.05GHZ至3GHZ, LFCSP-40

Product Details

The ADRF6704 provides a quadrature modulator and synthesizer solution within a small 6 mm × 6 mm footprint while requiring minimal external components.

The ADRF6704 is designed for RF outputs from 2050 MHz to 3000 MHz. The low phase noise VCO and high performance quadrature modulator make the ADRF6704 suitable for next generation communication systems requiring high signal dynamic range and linearity. The integration of the IQ modulator, PLL, and VCO provides for significant board savings and reduces the BOM and design complexity.

The integrated fractional-N PLL/synthesizer generates a 2× fLO input to the IQ modulator. The phase detector together with an external loop filter is used to control the VCO output. The VCO output is applied to a quadrature divider. To reduce spurious components, a sigma-delta Σ-Δ modulator controls the programmable PLL divider.

The IQ modulator has wideband differential I and Q inputs, which support baseband as well as complex IF architectures. The single-ended modulator output is designed to drive a 50 Ω load impedance and can be disabled.

The ADRF6704 is fabricated using an advanced silicon-germanium BiCMOS process. It is available in a 40-lead, exposed-paddle, Pb-free, 6 mm × 6 mm LFCSP package. Performance is specified from −40°C to +85°C. A lead-free evaluation board is available.

**Applications**

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Cellular communications systems

GSM/EDGE, CDMA2000, W-CDMA, TD-SCDMA, LTE

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Broadband wireless access systems

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Satellite modems

### Features and Benefits

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IQ modulator with integrated fractional-N PLL

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Output frequency range: 2050 MHz to 3000 MHz

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Internal LO frequency range: 2500 MHz to 2900 MHz

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Output P1dB: 12.1 dBm @ 2700 MHz

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Output IP3: 27.2 dBm @ 2700 MHz

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Noise floor: −158.3 dBm/Hz @ 2700 MHz

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Baseband bandwidth: 750 MHz 3 dB

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SPI serial interface for PLL programming

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Integrated LDOs and LO buffer

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Power supply: 5 V/226 mA

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40-lead 6 mm × 6 mm LFCSP