LT5581

PRODUCTION

6GHz RMS Power Detector with 40dB Dynamic Range

Part Models: 2
1ku List Price: Starting From $2.88

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Overview

Frequency Range: 10MHz to 6GHz
Accurate Power Measurement of High Crest Factor (Up to 12dB) Waveforms
40dB Log Linear Dynamic Range
Exceptional Accuracy Over Temperature
Fast Response Time: 1μs Rise, 8μs Fall
Low Power: 1.4mA at 3.3V
Log-Linear DC Output vs Input RF Power in dBm
Small 3mm × 2mm 8-Pin DFN Package
Single-Ended RF Input

The LT5581 is a 10MHz to 6GHz, low power monolithic precision RMS power detector. The RMS detector uses a proprietary technique to accurately measure the RF power from –34dBm to +6dBm (at 2.14GHz) of modulated signals with a crest factor as high as 12dB. It outputs a DC voltage in linear scale proportional to an RF input signal power in dBm. The LT5581 is suitable for precision power measurement and control for a wide variety of RF standards, including GSM/EDGE, CDMA, CDMA2000, W-CDMA, TD-SCDMA, UMTS, LTE and WiMAX, etc. The final DC output is connected in series with an on-chip 300Ω resistor, which enables further filtering of the output modulation ripple with just a single off-chip capacitor.

Applications

GSM/EDGE, CMDA, CDMA2000, W-CDMA, LTE, WiMAX RF Power Control
Pico-Cells, Femto-Cells RF Power Control
Wireless Repeaters
CATV/DVB Transmitters
MIMO Wireless Access Points
Portable RMS Power Measurement Instrumentation

Part Models: 2
1ku List Price: Starting From $2.88

Documentation

ADI has always placed the highest emphasis on delivering products that meet the maximum levels of quality and reliability. We achieve this by incorporating quality and reliability checks in every scope of product and process design, and in the manufacturing process as well. "Zero defects" for shipped products is always our goal. View our quality and reliability program and certifications for more information.

Part Model	Pin/Package Drawing	Documentation	CAD Symbols, Footprints, and 3D Models
LT5581IDDB#TRMPBF	8-Lead DFN (3mm x 2mm w/ EP)	Material Declaration Reliablity Data Package Resources	Ultra Librarian SamacSys
LT5581IDDB#TRPBF	8-Lead DFN (3mm x 2mm w/ EP)	Material Declaration Reliablity Data Package Resources	Ultra Librarian SamacSys

This is the most up-to-date revision of the Data Sheet.

Software Resources

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Hardware Ecosystem

Parts	Product Life Cycle	Description
Analog to Digital Converters (ADCs) 1
LTC2362	PRODUCTION	500ksps, 12-Bit Serial ADCs in TSOT-23
RF Power Detectors 1
LTC5582	PRODUCTION	40MHz to 10GHz RMS Power Detector with 57dB Dynamic Range