ADRF6701

400 MHz to 1250 MHz Quadrature Modulator with 750 MHz to 1150 MHz Frac-N PLL and Integrated VCO Data Sheet FEATURES IQ modulator with integrated fractional-N PLL Output frequency range: 400 MHz to 1250 MHz Internal LO frequency range: 750 MHz to 1150 MHz Output P1dB: 10.3 dBm @ 1100 MHz Output IP3: 30.1 dBm @ 1100 MHz Noise floor: −159.4 dBm/Hz @ 1100 MHz Baseband bandwidth: 750 MHz (3 dB) SPI serial interface for PLL programming Integrated LDOs and LO buffer Power supply: 5 V/240 mA 40-lead 6 mm × 6 mm LFCSP ADRF6701 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 ADRF6701 is fabricated using an advanced silicongermanium 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. Table 1. Part No. ADRF6701 ADRF6702 ADRF6703 Internal LO Range 750 MHz...