Date: 17/08/2010

Measure RMS power in wirless sys using Linear's new LTC5587

Linear has unvieled the LTC5587, which it claims as industry's first 40dB dynamic range 6GHz RMS detector integrated with a high sampling rate 12-bit serial A/D converter. The digital output RMS RF detector provides +/-1dB measurement accuracy of high crest-factor signals, independent of the modulation used. The detector operates in the frequency range from 10MHz to 6GHz. The integrated 12-bit ADC captures and digitizes the detector measurement at a rate of up to 500k samples/second and delivers the data via a bit stream over a serial SPI interface port. The RF detector in 3mm x 3mm DFN package operates with single-ended input and requires noexternal balun transformer.

The LTC5587 offers 0.014dB per bit measurement resolution and is suggested for applications in cellular basestations, picocells, and femtocells supporting all standards including LTE, W-CDMA, TD-SCDMA, CDMA/2k, GSM/EDGE and WiMAX. Other applications include MIMO radios, repeaters, point-to-point microwave links, military radios with complex modulation, remote power measurements, and portable test and measurement instruments. The detector is particularly useful in FPGA-based systems where no A/D converters are available.

The LTC5587 is powered from a single 3.3V supply, consumes a total operating current of 3mA also has shutdown capability, drawing less than 10uA supply current when disabled.

Package: Small 3mm x 3mm 12-pin DFN

Price: Starts at each US$5.17 for 1,000 piece quantities

Availability: Now