The AD8319, the latest addition to Analog Devices’s family of power detectors/controllers, measures RF (radio frequency) signals over the range of 1 MHz to 10 GHz. 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 temperature-stable performance over the full range of –40 degrees C to +85 degrees C, and offers 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). 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 V to 5.5 V, consuming 20 mA; power consumption is reduced to less than 1 mW when the device is disabled.

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 × 3 mm, 8-lead LFCSP.