RF & Wireless RF Log Detectors

LT5537 - Wide Dynamic Range RF/IF Log Detector

Features

  • Low Frequency to 1000MHz Operation
  • 83dB Dynamic Range with ±1dB Nonlinearity at 200MHz
  • Sensitivity –76dBm or Better at 200MHz
  • Log-Linear Transfer Slope of 20mV/dB
  • Supply Voltage Range: 2.7V to 5.25V
  • Supply Current: 13.5mA at 3V
  • Tiny 8-Lead (3mm × 2mm) DFN Package

Typical Application

LT5537 Typical Application
LT5537 Typical Application

Description

The LT5537 is a wide dynamic range RF/IF detector, operational from below 10MHz to 1000MHz. The lower limit of the operating frequency range can be extended to near DC by the use of an external capacitor. The input dynamic range at 200MHz with ±3dB nonlinearity is 90dB (from –76dBm to 14dBm, single-ended 50Ω input). The detector output voltage slope is nominally 20mV/dB, and the typical temperature coefficient is 0.01dB/°C at 200MHz.

Packaging

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

DFN-8

LT5537 Package Drawing

Order Info

Package Variations and Pricing

Part Number Package Pins Temp Price (1-99) Price (1k)* RoHS Data
LT5537EDDB DFN 8 E $4.34 View
LT5537EDDB#PBF DFN 8 E $4.34 View
LT5537EDDB#TR DFN 8 E $4.34 $3.03 View
LT5537EDDB#TRM DFN 8 E $4.34 $3.05 View
LT5537EDDB#TRMPBF DFN 8 E $4.34 $3.05 View
LT5537EDDB#TRPBF DFN 8 E $4.34 $3.03 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
DC747A LT5537EDDB | 90dB Dynamic Range Log RF/IF Detector $100.00
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Click here to view our complete list of demo boards

Applications

  • Linear-to-Log Signal Level Conversion
  • Received Signal Strength Indication (RSSI)
  • RF Power Control
  • RF/IF Power Detection
  • Receiver RF/IF Gain Control
  • Envelope Detection
  • ASK Receiver

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