Norwood, MAAnalog Devices has released the industry's first RF logarithmic detector/controller that accurately measures the power of radio signals from 1 MHz to 10 GHz, covering all cellular standards and a variety of wireless infrastructure and broadband wireless applications. In addition, the device is designed for fast output response time (5 ns), small size (housed in a 2 x 3 mm package), and low-power consumption (consuming only 20 mA of current and less than 1 mW when disabled) for portable applications.
The device offers accurate RF measurement of better than +/- 1 dB over a dynamic range of more than 50 dB, and can function as a power controller when its outputs are used to adjust a power amplifier (PA) or a variable-gain amplifier (VGA). The 1 MHz to 10 GHz operating frequency range supports all cellular standards (GSM, CDMA, W-CDMA and TD-SCDMA), broadband wireless standards (802.16, WiMAX, WiBro), and proprietary systems that operate in a variety of frequency bands.
The log amp provides precise, temperature-stable performance over the full range of -40 degrees C to +85 degrees C, and an output response time of 5 nanoseconds, which enables RF burst detection to beyond 125 MHz. It operates over a supply voltage range of +3 to +5 VDC.
The AD8317 $3.93 per unit in 1,000-piece quantities and is packaged in a 2 mm x 3 mm, 8-lead LFCSP. It is sampling now, with volume production scheduled for October 2005. Click here for more information.
Analog Devices, Inc.