LTC5582 Datasheet | Linear Technology

LTC5582 40MHz to 10GHz RMS Power Detector with 57d B Dynamic Range Features Frequency Range: 40MHz to 10GHz n Linear Dynamic Range: Up to 57d B n Accurate RMS Power Measurement of High Crest Factor Modulated Waveforms n Exceptional Accuracy Over Temperature: ±0.5d B (Typ) n Low Linearity Error within Dynamic Range n Single-Ended or Differential RF Inputs n Fast Response Time: 90ns Rise Time n Low Supply Current: 41.6m A at 3.3V (Typ) n Small 3mm × 3mm DFN10 n .. Description The LTC®5582 is a 40MHz to 10GHz RMS responding power detector. It is capable of accurate power measurement of an AC signal with wide dynamic range, from - 60d Bm to 2d Bm depending on frequency. The power of the AC signal in an equivalent decibel-scaled value is precisely converted into DC voltage on a linear scale, independent of the crest factor of the input signal waveforms. The LTC5582 is suitable for precision RF power measurement and level control for a wide variety of RF standards, including LTE, Wi MAX, W-CDMA, CDMA2000, TD-SCDMA, and EDGE. The DC output is buffered with a low output impedance amplifier capable of driving a high capacitance load. Consult factory for more information. The part is packaged in a 10-lead 3mm × 3mm DFN. It is pin-to-pin patible with the LT5570. L, LT, LTC, LTM, Linear Technology and the Linear logo are registered trademarks of Linear Technology Corporation. All other trademarks are the property of their respective owners. Protected by U.S. Patents including 7262661, 7317357, 7622981. Applications n n n n RMS Power Measurement PA Power Control Receive and Transmit Gain Control LTE, Wi MAX, W-CDMA, CDMA2K, TD-SCDMA, EDGE Basestations n Point-to-Point Microwave Links n RF Instrumentation Typical Application 40MHz to 6GHz RMS Power Detector 3.3V 1µF 1n F VCC IN+ 270p F 68Ω DEC IN- 1n F GND LTC5582 100n F LINEARITY ERROR (d B) FLTR EN RT1 RT2 OUT 5582 TA01a Linearity Error vs RF Input Power 2140MHz Modulated Waveforms 3 2 1 0 - 1 - 2 -...