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Log amp spans 1 MHz to 10GHz

Wilmington, MA—The AD8319 is the latest addition to Analog Devices' AD831x family of power detectors/controllers, and it is designed to accurately measure RF signals over the frequency range of 1 MHz to 10 GHz. and delivers an exceptional combination of low power, small packaging and fast output response time. The AD8319 allows wireless designers to trade off dynamic range for system cost. The device supports all cellular standards (GSM, CDMA, W-CDMA and TD-SCDMA), broadband wireless standards (WiFi, WiMAX, 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 -40 degrees C to +85 degrees C, and offers accurate RF measurement of better than +/- 1 dB over a dynamic range of 40 dB. The device can also be used as a power controller when its outputs are used to adjust a PA (power
amplifier) or a VGA (variable-gain amplifier), such as ADI's ADL5330. For radar applications, the device has an output response time of eight nanoseconds, enabling RF burst detection to beyond 125 MHz.

The AD8319 operates over a supply voltage range of +3 to +5.5 VDC, consuming only 20 mA; power consumption is reduced to less than 1 mW when the device is disabled. Its low-power consumption and miniature single-chip 2 mm x 3 mm package makes the device ideally suited for portable communications applications.

The AD8319 is sampling now, with volume production scheduled for November 2005. It is priced at $2.99 per unit in 1,000-piece quantities and is packaged in a 2 mm x 3 mm, 8-lead LFCSP. . Click here for the data sheet.

Analog Devices, Inc., +1 800-262 5643, www.analog.com .

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