RF detector chip has all bands covered
A novel RF log detector/controller accurately measures the power of radio signals from 1MHz to 10GHz, covering all cellular and broadband wireless applications
Analog Devices is releasing the industry's first RF log detector/controller that accurately measures the power of radio signals from 1MHz to 10GHz, covering all cellular standards and a variety of wireless infrastructure and broadband wireless applications. In addition, the device offers fast output response time - enabling superior RF burst detection in radar applications - a tiny 2 x 3mm package for space-constrained applications, and low power consumption for portable applications.
These features, packed into one small IC, allow manufacturers to reduce inventory and leverage design costs by having one device that can be used in several products.
Accurate power measurement and control are critical to improving system performance and ensuring regulatory compliance.
The AD8317 demodulating log amp offers accurate RF measurement of better than +/-1dB over a dynamic range of more than 50dB, and can function as a power controller when its outputs are used to adjust a power amplifier or a variable-gain amplifier, such as ADI's ADL5330.
The wide 1MHz to 10GHz 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 AD8317 provides precise, temperature-stable performance over the full range of -40 to +85C, and a very fast output response time of 5ns, enabling RF burst detection to beyond 125MHz.
The device operates over a supply voltage range of 3 to 5V, consuming only 20mA of current; power consumption is reduced to less than 1mW when the device is disabled.
The AD8317 is sampling now, with volume production scheduled for October 2005.
The device is priced at $3.93 per unit in 1000-piece quantities and is packaged in a space-saving 2 x 3mm, 8-lead LFCSP.
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