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Power detector targets closed-loop 3G handset apps

Posted: 18 May 2007 ?? ?Print Version ?Bookmark and Share

Keywords:linear power detector? 3G handset applications? reduce output variation?

Maxim's linear power detector

Maxim Integrated Products introduces the MAX2204, a linear power detector for mobile applications designed to compensate for temperature and process shifts.

The power detector reduces output variation to 0.5dB at full power (5dBm) and to 1.5dB at low power (-16dBm). This enables fewer end-of-line calibration tests during handset manufacturing.

MAX2204 uses Maxim' silicon bipolar technology to achieve this performance, and also operates from 450MHz to 2.5GHz. This performance and flexibility make it suitable for demanding closed-loop architecture mobile applications for cellphones and data cards, such as HSDPA/HSUPA, W-CDMA and cdma2000 handset designs.

The chip features a detection range of -16dBm to 5dBm. It supports both resistive-tapping and directional-coupler architectures. The use of external termination at the input of the device allows a single MAX2204 to be connected to multiple direction couplers.

MAX2204 is specified over the extended temperature range of -40C to 85C. The device is housed in a 2-by-2.2mm, Pb-free, 5-pin SC70 package.

An evaluation kit is now available to speed designs. Prices start at 39 cents for 10,000-unit quantities (FOB USA).

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