ADRF6820-EVALZ I/Q Demodulators with Integrated LO by Analog Devices

I/Q Demodulators with Integrated LO
Status: Last Time Buy
Series: ADRF6820
RoHS: Compliant
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The ADRF6820 is a highly integrated demodulator and synthesizer ideally suited for next generation communication systems. The feature rich device consists of a high linearity broadband I/Q demodulator, an integrated fractional-N phase-locked loop (PLL), and a low phase noise multicore, voltage controlled oscillator (VCO). The ADRF6820 also integrates a 2:1 RF switch, an on-chip tunable RF balun, a programmable RF attenuator, and two low dropout (LDO) regulators. This highly integrated device fits within a small 6 mm × 6 mm footprint.The high isolation 2:1 RF switch and on-chip tunable RF balun enable the ADRF6820 to support two single-ended, 50 Ω terminated RF inputs. A programmable attenuator ensures an optimal differential RF input level to the high linearity demodulator core. The integrated attenuator offers an attenuation range of 0 dB to 15 dB with a step size of 1 dB.The ADRF6820 offers two alternatives for generating the differential local oscillator (LO) input signal: externally via a high frequency, low phase noise LO signal or internally via the on-chip fractional-N synthesizer. The integrated synthesizer enables continuous LO coverage from 356.25 MHz to 2850 MHz. The PLL reference input can support a wide frequency range because the divide or multiplication blocks can increase or decrease the reference frequency to the desired value before it is passed to the phase frequency detector (PFD). When selected, the output of the internal fractional-N synthesizer is applied to a divide-by-2 quadrature phase splitter. From the external LO path, a 1× LO signal can be applied to the built-in polyphase filter, or a 2× LO signal can be used with the divide-by-2 quadrature phase splitter to generate the quadrature LO inputs to the mixers.The ADRF6820 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 paddle. Performance is specified over the −40°C to +85°C temperature range.
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Features

I/Q demodulator with integrated fractional-N PLL
RF input frequency range: 695 MHz to 2700 MHz
Internal LO frequency range: 356.25 MHz to 2850 MHz
Input P1dB: 14.5 dBm at 1900 MHz RF
Input IP3: 35 dBm at 1900 MHz RF
Programmable HD3/IP3 trim
Single pole, double throw (SPDT) RF input switch
RF digital step attenuation range: 0 dB to 15 dB
Integrated RF tunable balun for single-ended 50 Ω input
Multicore integrated VCO
Demodulated 1 dB bandwidth: 600 MHz
Demodulated 3 dB bandwidth: 1400 MHz
4 selectable baseband gain and bandwidth modes
Digital programmable LO phase offset and dc nulling
Programmable via 3-wire serial port interface (SPI)
40-lead, 6 mm × 6 mm LFCSP

Alternative Descriptions

MODULATOR/DEMODULATOR | Richardson RFPD

Frequently Asked Questions

Where can I find additional details, specifications and documents for a ADRF6820-EVALZ?

Additional datasheets, footprints and schematics for ADRF6820-EVALZ are listed on our Part Details page. You can also find images and similar parts to ADRF6820-EVALZ on this page.

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What category does ADRF6820-EVALZ fall under?

The ADRF6820-EVALZ is listed under I/Q Demodulators with Integrated LO.

Can I view similar or alternative parts?

You can view similar parts to ADRF6820-EVALZ when available in the I/Q Demodulators with Integrated LO range under the specifications section at the bottom of the details page.

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Is the ADRF6820-EVALZ RoHS compliant?

Yes. This part has been flagged as RoHS Compliant by Analog Devices.

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