LTC5533 - 300MHz to 11GHz Precision Dual RF Power Detector


  • Two Independent Temperature Compensated Schottky Diode RF Peak Detectors
  • 45dB Channel-to-Channel Isolation at 2GHz
  • Wide Input Frequency Range: 300MHz to 11GHz*
  • Wide Input Power Range: -32dBm to 12dBm
  • Buffered Detector Outputs with Gain of 2x
  • Adjustable VOUT Starting Voltage
  • Wide VCC Range of 2.7V to 6V
  • Low Operating Current: <500µA/Channel
  • Low Shutdown Current: <2µA/Channel
  • 4mm × 3mm DFN Package

Typical Application

LTC5533 Typical Application
LTC5533 Typical Application


The LTC5533 is a dual channel RF power detector for RF applications operating in the 300MHz to 11GHz range. Two independent temperature compensated Schottky diode peak detectors and buffer amplifiers are combined in a small 4mm × 3mm DFN package.

The RF input voltage is peak detected using on-chip Schottky diodes. The detected voltage is buffered and supplied to the VOUT pins. A power saving shutdown mode reduces current to less than 2µA/channel. The initial output starting voltages can be precisely adjusted using the VOS pins.

The LTC5533 operates with input power levels from -32dBm to 12dBm.

*Higher frequency operation is achievable with reduced performance. Consult factory for more information.


CAD Symbols and Footprints: The downloadable Zip file below contains the schematic symbol and PCB footprints.

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

Part Number Package Code Temp Package
LTC5533EDE#PBF 4x3 DFN-12 DE/UE E 05-08-1695 Yes
LTC5533EDE#TRPBF 4x3 DFN-12 DE/UE E 05-08-1695 Yes

LTC5533 Package Drawing

Order Info

  • Part numbers ending in PBF are lead free. Solder plated terminal finish (SnPb) versions are non-standard and special terms and conditions and pricing applies if available. Please contact LTC marketing for information.
  • Part numbers containing TR or TRM are shipped in tape and reel or 500 unit mini tape and reel, respectively
  • Please refer to our general ordering information or the product datasheet for more details

Package Variations and Pricing

Part Number Package Temp Price
LTC5533EDE#PBF 4x3 DFN-12 E $4.55 $3.20 Yes
LTC5533EDE#TRPBF 4x3 DFN-12 E $3.28 Yes
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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
DC821A LTC5533EDE | Dual RF Power Detector, 300MHz to 11GHz $100.00
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Click here to view our complete list of demo boards


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Design Tools

Linear Technology provides a variety of custom design simulation tools and device models to allow even novice designers to quickly and easily evaluate circuits using high performance switching regulators, amplifiers, data converters, filters and more. Please visit our Design Tools page to view and download:

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