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
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
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 Drawing |
RoHS |
|---|---|---|---|---|---|
| LT5537EDDB#PBF | 3x2 DFN-8 | DDB | E | 05-08-1702 | Yes |
| LT5537EDDB#TRMPBF | 3x2 DFN-8 | DDB | E | 05-08-1702 | Yes |
| LT5537EDDB#TRPBF | 3x2 DFN-8 | DDB | E | 05-08-1702 | Yes |
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 (1-99) |
Price (1k)* |
RoHS | |
|---|---|---|---|---|---|---|
| LT5537EDDB#PBF | 3x2 DFN-8 | E | $4.34 | Yes | ||
| LT5537EDDB#TRMPBF | 3x2 DFN-8 | E | $4.34 | $3.05 | Yes | |
| LT5537EDDB#TRPBF | 3x2 DFN-8 | E | $4.34 | $3.03 | Yes | |
| Buy Now • Request Samples | ||||||
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 | |
| Buy Now | |||
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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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:
- LTspice - A powerful SPICE simulator, schematic capture and waveform viewer with enhancements and models for easing the simulation of switching regulators
- LTpowerCAD - A complete power supply selection, synthesis and design tool
- LTpowerPlay - A development environment supporting Linear Technology's Digital Power System Management (PSM) products
- PScope & QuikEval - USB-based product demonstration and data acquisition system for use with our ADCs, DACs, and more
- Linduino - Arduino compatible system for developing and distributing firmware libraries and example code
- LinearLab Tools - A collection of Matlab and Python programs that provide direct access to Linear Technology’s data converter evaluation boards
- And More!
Technical Support
- For immediate technical assistance, contact your local sales office or distributor or call 1-800-4-LINEAR (US customers only) or 408-432-1900.
- For less urgent requests, please complete our Technical Support Request Form. Please allow 2-3 business days for reply.
