ADRF6720 Wideband (700 MHz to 3 GHz) Quadrature Modulator with Integrated PLL/VCOs and 0.5 V Input Bias
The ADRF6720 is a wideband quadrature modulator with an integrated synthesizer ideally suited for 3G and 4G communication systems. The ADRF6720 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 ADRF6720 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 the ADRF6720 is operated with an external 1 × LO input, a polyphase filter generates the quadrature inputs to the mixer.
The ADRF6720 offers digital programmability for carrier feedthrough optimization, sideband suppression, HD3/IP3 optimization, and high-side or low-side LO injection.
The ADRF6720 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.
Applications
- 2G/3G/4G/LTE broadband communication systems
- Microwave point-to-point radios
- Satellite modems
- Military/aerospace
- Instrumentation
Features and BenefitsI/Q modulator with integrated fractional-N PLLRF output frequency range: 700 MHz to 3000 MHzInternal LO frequency range: 356.25 MHz to 2855 MHzOutput P1dB: 12.2 dBm at 2140 MHzOutput IP3: 32.6 dBm at 2140 MHzCarrier feedthrough: −40.3 dBm at 2140 MHzSideband suppression: −37.6 dBc at 2140 MHzNoise floor: −157.9 dBm/Hz at 2140 MHzBaseband 1 dB modulation bandwidth: >1000 MHzBaseband input bias level: 0.5 VPower supply: 3.3 V/425 mAIntegrated RF tunable balun allowing single-ended RF outputMulticore integrated VCOsHD3/IP3 optimizationSideband suppression and carrier feedthrough optimizationHigh-side/low-side LO injectionProgrammable via 3-wire serial port interface (SPI)40-lead 6 mm × 6 mm LFCSP | S-ParametersReference DesignsSoftware & Systems Requirements |
Data Sheets
User Guides
Order Information
| Part Number | Package | Packing Qty | Temp Range | Price 100-499 | Price 1000+ | RoHS |
|---|
| ADRF6720ACPZ-R7 Production | 40 ld LFCSP (6x6mm w/4.4mm pad) | REEL 750 | -40 to 85C | 0 | 0 | Y |
Evaluation Boards
| Part Number | Description | Price | RoHS |
|---|
| ADRF6720-EVALZ | Evaluation Board | 200 | Y |
Reference Materials
