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Power detector/controller combines low power, small packaging

Posted: 25 Aug 2005 ?? ?Print Version ?Bookmark and Share

Keywords:ad8319? analog devices? adi? power detector/controller?

Controller supports all cellular standards

Analog Devices claims that its latest power detector/controller accurately measures RF signals over the industry's widest frequency range of 1MHz to 10GHz, and delivers an exceptional combination of low power, small packaging and fast output response time.

Offered at the lowest price point in the AD831x family, the AD8319 allows wireless designers to trade off dynamic range for system cost. This device supports all cellular standards (GSM, CDMA, W-CDMA and TD-SCDMA), broadband wireless standards (WiFi, WiMAX and WiBro), and proprietary systems that operate in a variety of frequency bands.

A demodulating log amp, the AD8319 provides precise, temperature-stable performance over the full range of -40C to 85C, and offers accurate RF measurement of better than 1dB over a dynamic range of 40dB. This product can also be used as a power controller when its outputs are used to adjust a power amplifier or a VGA (variable-gain amplifier). For radar applications, it has an output response time of 8ns, enabling RF burst detection to beyond 125MHz.

Low power, small size
The AD8319 operates over a supply voltage range of 3V to 5.5V, consuming 20mA. ADI added that power consumption is reduced to

Already available for sampling, the AD8319 is priced at $2.99 per unit in 1,000-piece quantities and is packaged in a 2-by-3mm, 8-lead LFCSP. Volume production is scheduled in November 2005.




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