LT5521 - Very High Linearity Active Mixer
Features
- Wideband Output Frequency Range to 3.7GHz
- +24.2dBm IIP3 at 1.95GHz RF Output
- Low LO Leakage: –42dBm
- Integrated LO Buffer: Low LO Drive Level
- Single-Ended LO Drive
- Wide Single Supply Range: 3.15V to 5.25V
- Double-Balanced Active Mixer
- Shutdown Function
- 16-Lead (4mm x 4mm) QFN Package
Typical Application
Description
The LT5521 is a very high linearity mixer optimized for low distortion and low LO leakage applications. The chip includes a high speed LO buffer with single-ended input and a double-balanced active mixer. The LT5521 requires only –5dBm LO input power to achieve excellent distortion and noise performance, while reducing external drive circuit requirements. The LO buffer is internally 50 Ohm matched for wideband operation.
With a 250MHz input, a 1.7GHz LO and a 1.95GHz output frequency, the mixer has a typical IIP3 of +24.2dBm, –0.5dB conversion gain and a 12.5dB noise figure.
The LT5521 offers exceptional LO-RF isolation, greatly reducing the need for output filtering to meet LO suppression requirements.
The device is designed to work over a supply voltage range from 3.15V to 5.25V.
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 |
|---|---|---|---|---|---|
| LT5521EUF#PBF | 4x4 QFN-16 | UF | E | 05-08-1692 | Yes |
| LT5521EUF#TRPBF | 4x4 QFN-16 | UF | E | 05-08-1692 | 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 | |
|---|---|---|---|---|---|---|
| LT5521EUF#PBF | 4x4 QFN-16 | E | $7.07 | $4.95 | Yes | |
| LT5521EUF#TRPBF | 4x4 QFN-16 | E | $5.05 | 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 |
|---|---|---|---|
| DC642A | LT5521EUF | UP/DOWN CONVERTING MIXER | $125.00 | |
| Buy Now | |||
Applications
- Cellular, W-CDMA, PHS and UMTS Infrastructure
- Cable Downlink Infrastructure
- Wireless Infrastructure
- Fixed Wireless Access Equipment
- High Linearity Mixer Applications
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Product Notifications
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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.
