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Direct conversion receiver solution reduces component count by 60 percent

Norwood, Mass. — Analog Devices, Inc. has expanded its radio frequency (RF) product portfolio, adding the ADL5380 quadrature demodulator and the AD8366 dual gain trim amplifier for direct conversion receivers in next-generation cellular 3G/4G and broadband wireless 802.16 applications.

Touted as the industry's first product capable of operating from 400 MHz to 6 GHz, the ADL5380 demodulator allows radio designers to apply the same device across a range of products and frequency variants, while the companion AD8366, touted as the industry's first dual-channel digital gain trim amplifier (DGTA), is designed to enable, integrate and cost reduce direct conversion radio receivers. The combined two-chip solution can reduce the active component count by 60 percent within a radio design, providing considerable board area and bill of material (BOM) savings, Analog Devices said.

The ADL5380 also claims the industry's highest dynamic range with the highest linearity specifications, exemplified by second- and third-order intercept point specifications of 31 dBm and 60 dBm respectively at 2500 MHz. The ADL5380 also provides typical 3-4 dB of conversion gain, helping to minimize the gain requirements of the receiver front end.

The AD8366 claims the industry's first dual-channel digitally controlled gain trim amplifier with 0.25 dB step over a 4.5 to 20.5 dB gain range. The AD8366 is suitable for analog I/Q quadrature ADC driving. The fine gain control allows flexible and precise tuning of gain-critical to multi-standard and wideband radio receivers. Other features include adjustable output common mode for matching to ADC input ranges, and DC output offset correction loops to minimize demodulator DC offsets.

Pricing: The ADL5380 demodulator (24-lead, 4 x 4 mm LFCSP) is priced at $5.22 each and the AD8366 DGTA (32-lead, 5 x 5 mm LFCSP) is priced at $6.49 each, both in quantities of 1,000.
Product information: ADL5380 and AD8366

Analog Devices Inc. , www.analog.com

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