- RF bandwidth: 55 MHz to 15000 MHz
- Maximum phase detector rate: 100 MHz
- Industry leading Phase Noise
- -115dBc/Hz Typical @ 100 kHz (7GHz)
- 114dBc/Hz Typical @ 100 kHz (10GHz)
- -110dBc/Hz Max @ 100 kHz (15GHz)
- RFOUT Power: +5dBm
- Figure of Merit, Int / Frac (FOM): −229 / -226 dBc/Hz
- 24-bit step size, 3 Hz typical resolution
- Exact frequency mode with 0 Hz frequency error
- Fast frequency hopping
- 48-lead, 7 mm × 7 mm LFCSP package: 49 mm2
The ADF5610 allows implementation of fractional-N or integer- N phase-locked loop (PLL) frequency synthesizers when used with an external loop filter and an external reference source. The wideband microwave VCO design permits frequency operation from 7000 MHz to 15000 MHz at a single radio frequency (RF) output. A series of frequency dividers with a differential frequency output allows operation from 55 MHz to 15000 MHz. Analog and digital power supplies for the phase locked loop (PLL) circuitry range from 3.0 V to 3.6 V, and the voltage controlled oscillator (VCO) supplies are between 4.75 V to 5.25 V. The charge pump can be operated up to 3.6V for improved frequency band overlap and extended upper frequency range.
The ADF5610 has an integrated VCO with a fundamental frequency of 3500 MHz to 7000 MHz. These frequencies are internally doubled and routed to the RFOUT pin. An additional differential output allows the doubled VCO frequency to be divided by 1, 2, 4, 8, 16, 32, 64 and 128 allowing the user to generate RF output frequencies as low as 55 MHz. A simple 3-wire serial port interface (SPI) provides control of all on-chip registers. To conserve power, this divider block can be disabled when not needed through the SPI interface. Likewise, the output power for both the single ended and differential outputs are programmable via VCO registers settings. The ADF5610 also contains power-down modes for the VCO and PLL circuitry.
The integrated phase detector (PD) and delta-sigma (Δ-Σ) modulator, capable of operating at up to 100 MHz, permit wide loop bandwidths and fast frequency tuning with excellent spectral performance.
Industry leading phase noise and good spurious performance, across all frequencies, enable the ADF5610 to minimize blocker effects, and to improve receiver sensitivity and transmitter spectral purity. The low phase noise floor eliminates any contribution to modulator/mixer noise floor in transmitter applications.
The ADF5610 is a market leading PLL with integrated VCO. It features an innovative programmable performance technology that enables the ADF5610 to tailor current consumption and corresponding noise floor performance to individual applications by selecting either a low current consumption modes or a high performance mode for improved noise floor performance.
Additional features of the ADF5610 include 4dB of RFOUT gain control in 1 dB steps and approximately 6dB of control on the differential port in approximately 3dB steps. Finally the Δ-Σ modulator with exact frequency mode enables users to generate output frequencies with 0 Hz frequency error.
- Cellular infrastructure
- Microwave radios
- WiMax, WiFi
- Communications test equipment
- CATV equipment
The ADF5610SD1Z evaluates the performance of the ADF5610BCCZ frequency synthesizer with integrated VCO for phase-locked loops (PLLs). The evaluation board contains the ADF5610 synthesizer with integrated VCO, a single ended 50 MHz, VCXO reference which can be used alone or with the on-board HMC1031 Clock Generator for synchronization with test equipment. Powered by a single supply, the multiple on-board LT3042 and LT3045 low noise, low voltage drop-out voltage regulators (LDO’s) allow for good isolation, use of an optional 3.6 V charge pump, as well as the ability to evaluate performance with only two (2) LDO’s. The USB interface, power supply connectors, subminiature Version A (SMA) connectors and loop filter are all part of the board design.
After connecting the ADF5610EB to a PC USB port by using the included USB interface board, ribbon and USB cables, the registers are ready to be initialized and configured. For easy programming of the synthesizer, download the Windows®-based software from ADF5610.
For full details on the ADF5610, see the ADF5610 data sheet, which must be consulted in conjunction with User Guide (UG-TBD) when using this evaluation board.
ADI has always placed the highest emphasis on delivering products that meet the maximum levels of quality and reliability. We achieve this by incorporating quality and reliability checks in every scope of product and process design, and in the manufacturing process as well. "Zero defects" for shipped products is always our goal.
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