ADI ADRF6720-27ACPZ-R7

A wideband quadrature modulator with an integrated synthesizer ideally suited for 3G and 4G communication systems. It consists of a high linearity broadband modulator, an integrated fractional-N phase-locked loop (PLL), and four low phase noise multicore voltage controlled oscillators (VCOs). The local oscillator (LO) signal can be generated internally via the on-chip integer-N and fractional-N synthesizers, or externally via a high frequency, low phase noise LO signal. The internal integrated synthesizer enables LO coverage from 356.25 MHz to 2855 MHz using the multicore VCOs. In the case of internal LO generation or external LO input, quadrature signals are generated with a divide by 2 phase splitter. When operated with an external 1×LO input, a polyphase filter generates the quadrature inputs to the mixer. It offers digital programmability for carrier feedthrough optimization, sideband suppression, HD3/IP3 optimization, and high-side or low-side LO injection. It is fabricated using an advanced silicon-germanium BiCMOS process. It is available in a 40-lead, RoHS-compliant, 6 mm×6 mm LFCSP package with an exposed pad. Performance is specified over the -40°C to +85°C temperature range.

• I/Q modulator with integrated fractional-N PLL
• RF output frequency range: 400 MHz to 3000 MHz
• Internal LO frequency range: 356.25 MHz to 2855 MHz
• Output P1dB: 10.8 dBm at 2140 MHz
• Output IP3: 31.1 dBm at 2140 MHz
• Carrier feedthrough: −44.3 dBm at 2140 MHz
• Sideband suppression: −40.8 dBc at 2140 MHz
• Noise floor: −159.5 dBm/Hz at 2140 MHz
• Baseband 1 dB modulation bandwidth: >1000 MHz
• Baseband input bias level: 2.68 V
• Power supply: 3.3 V/425 mA
• Integrated RF tunable balun allowing single-ended RF output
• Multicore integrated VCOs
• HD3/IP3 optimization
• Sideband suppression and carrier feedthrough optimization
• High-side/low-side LO injection
• Programmable via 3-wire serial port interface (SPI)
• 40-lead 6 mm×6 mm LFCSP

• 2G/3G/4G/LTE broadband communication systems
• Microwave point-to-point radios
• Satellite modems
• Instrumentation