LTC5583 - Matched Dual-Channel 6GHz RMS Power Detector

Features

  • Frequency Range: 40MHz to 6GHz
  • Linear Dynamic Range: Up to 60dB
  • ±0.5dB (Typ) Accuracy Over Temperature
  • 40dB Channel-to-Channel Isolation at 2GHz Even with Single-Ended RF Inputs
  • Matched Dual-Channel Outputs: <1.25dB (Typ)
  • Single-Ended RF Inputs—No Transformer Required
  • Accurate RMS Power Measurement of High Crest Factor Modulated Waveforms
  • Difference Output Provides VSWR Measurement
  • Fast Envelope Detector Outputs
  • Fast Response Time: 140ns Rise Time
  • Small 4mm × 4mm QFN24 Package
 

Typical Application

LTC5583 Typical Application
LTC5583 Typical Application

Description

The LTC5583 is a dual-channel RMS power detector, capable of measuring two AC signals with wide dynamic range, from –59dBm to 4dBm, depending on frequency. Each AC signal’s power in decibel-scaled value is precisely converted to a DC voltage on a linear scale, independent of the crest factor of the input signal waveforms. The LTC5583 is suitable for precision power measurement and level control for a variety of RF standards, including LTE, EDGE, W-CDMA, CDMA2000, TD-SCDMA, and WiMAX.

Good channel-to-channel isolation is necessary for operating the dual channels simultaneously. For applications where the two input signals are at the same frequency (e.g. measuring VSWR), the LTC5583 provides 40dB isolation at 2.14GHz even with single-ended inputs. No baluns are needed. When the two input signals are at different frequencies, the isolation can be as high as 50dB. The isolation can be improved to >55dB with differential inputs.

The power difference of the two input signals is provided at a difference output pin. Each channel also has a fast envelope detector, which tracks the RF input signal’s envelope and outputs a voltage directly proportional to the signal’s instantaneous power. The envelope detectors can be disabled to reduce power consumption.

 

Packaging

For complete and up to date package information and drawings, please refer to our packaging page

QFN-24

LTC5583 Package Drawing

Order Info

Package Variations and Pricing

Part Number Package Pins Temp Price (1-99) Price (1k)* RoHS Data
LTC5583IUF#PBF QFN 24 I $13.58 $9.50 View
LTC5583IUF#TRPBF QFN 24 I $9.56 View
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* The USA list pricing shown is for BUDGETARY USE ONLY, shown in United States dollars (FOB USA per unit for the stated volume), and is subject to change. International prices may differ due to local duties, taxes, fees and exchange rates. For volume-specific price or delivery quotes, please contact your local Linear Technology sales office or authorized distributor.

Demo Boards

Linear Technology offers many demo boards free of charge to qualified customers. Contact your local sales office or distributor to inquire about a demo board. Certain demo boards are also available for sale via credit card on this website. Demo boards are for evaluation purposes only. It remains the customer’s responsibility to verify proper and reliable operation in the actual end application.

Part Number Description Price Documentation
DC1599A LTC5583IUF#PBF | Dual RMS Power Detector Demo Board, set up for 40MHz to 3GHz operation.. $100.00
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Click here to view our complete list of demo boards

Applications

  • VSWR Monitor
  • MIMO Transmit Power Control
  • Basestation PA Control
  • Transmit and Receive Gain Control
  • RF Instrumentation
 

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