Products > Integrated Circuits (ICs) > LT5557EUF

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to 3.8GHz 3.3V High Linearity Downconverting RF Mixer

  • Package/Case :
  • QFN-16
  • Product Categories :
  • RF Mixers ; Single, Double & Triple Balanced Mixers
  • RoHs Status:
  • Lead free/RoHS Compliant
  • Marking Code:
  • 5557
  • In-stock:
  • 737


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LT5557EUF Product Details

The LT5557EUF active mixer is optimized for high linearity, wide dynamic range downconverter applications. The IC includes a high speed differential LO buffer amplifier driving a double-balanced mixer. Broadband, integrated transformers on the RF and LO inputs provide single-ended 50Ω interfaces. The differential IF output allows convenient interfacing to differential IF filters and amplifiers, or is easily matched to drive a single-ended 50Ω load, with or without an external transformer.

The RF input is internally matched to 50Ω from 1.6GHz to 2.3GHz, and the LO input is internally matched to 50Ω from 1GHz to 5GHz. The frequency range of both ports is easily extended with simple external matching. The IF output is partially matched and usable for IF frequencies up to 600MHz.

The LT5557’s high level of integration minimizes the total solution cost, board space and system-level variation.



  • Wide RF Frequency Range: 400MHz to 3.8GHz*
  • High Input IP3:
    • 25.6dBm at 900MHz
    • 24.7dBm at 1950MHz
    • 23.7dBm at 2.6GHz
  • Conversion Gain:
    • 3.3dB at 900MHz
    • 2.9dB at 1950MHz
  • –3dBm LO Drive Level
  • Low LO Leakage
  • Low Noise Figure:
    • 10.6dB at 900MHz
    • 11.7dB at 1950MHz
  • Low Power: 3.3V/269mW
  • 50Ω Single-Ended RF and LO Ports
  • Very Few External Components
  • 16-Lead (4mm × 4mm) QFN Package


  • Cellular, CDMA, WCDMA, TD-SCDMA and UMTS Infrastructure
  • WiMAX
  • Wireless Infrastructure Receiver
  • Wireless Infrastructure PA Linearization
  • 900MHz/2.4GHz/3.5GHz WLAN

LT5557EUF Pinout
(Picture: Pinout)

LT5557EUF Block Diagram
(Picture: Diagram)

Technical Parameters

  • Freq Response RFmin | Hz
  • 400M
  • Freq Response RFmax | Hz
  • 3.8G
  • Freq Response LOmin | Hz
  • 380M
  • Freq Response LOmax | Hz
  • 4.2G
  • Freq Response IFmin | Hz
  • 100k
  • Freq Response IFmax | Hz
  • 600M
  • Conv. GaindB
  • 2.9
  • IIP3typ | dBm
  • 25.6
  • LO/RF Isotyp | dB
  • 42
  • LO/IF Isotyp | dB
  • 39
  • NFtyp | dB
  • 11.7
  • IP1dBtyp | dBm
  • 8.8
  • LO Drive Nom.dBm
  • -3

LT5557EUF Documents

  • LT5557 Technical Documentation/Data sheet

LT5557EUF Related Products

Ratings and Reviews (1)

  • 5 / 5
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  • **nton***

    Todo perfecto, excelente transacción. Funcionan a la perfección

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Estimated Delivery Time: Apr 18 - Apr 23 days (choose Expedited at checkout).

Shipping & Payment


  • Shipping Type
  • Ship Fee
  • Lead Time
  • $20.00-$40.00 (0.50 KG)
  • 2-5 days
  • $20.00-$40.00 (0.50 KG)
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  • $20.00-$45.00 (0.50 KG)
  • 2-5 days
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  • 5-14 days
  • $2.00-$3.00 (0.10 KG)
  • 7-30 days

Processing Time:Shipping fee depend on different zone and country.


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  • Hand Fee
  • Payment Site
  • charge US$30.00 banking fee.
  • charge 4.0% service fee.
  • charge 3.5% service fee.
  • charge US$0.00 banking fee.
  • charge US$0.00 banking fee.

We provide high quality products, thoughtful service and after sale guarantee

  • We have rich products, can meet your various needs.

    We have rich products, can meet your various needs.

  • Minimum order quantity starts from 1pcs.

    Minimum order quantity starts from 1pcs.

  • Lowest international shipping fee starts from US$2.00.

    Lowest international shipping fee starts from US$2.00.

  • 90 days quality guarantee for all products.

    90 days quality guarantee for all products.


  • Step1:Product

    Step1: Products

  • Step2:Vacuum packaging

    Step2: Vacuum Packaging

  • Step3:Anti-static bag

    Step3: Anti-Static Bag

  • Step4:Individual packaging

    Step4: Individual Packaging

  • Step5:Packaging boxes

    Step5: Packaging Boxes

  • Step6:bar-code shipping tag

    Step6: Bar-Code Shipping Tag

All the products will packing in anti-staticbag. Ship with ESD antistatic protection.

Outside ESD packing’s lable will use ourcompany’s information: Part Mumber, Brand and Quantity.

We will inspect all the goods before shipment,ensure all the products at good condition and ensure the parts are new originalmatch datasheet.

After all the goods are ensure no problems afterpacking, we will packing safely and send by global express. It exhibitsexcellent puncture and tear resistance along with good seal integrity.

Jotrin ESD packing


1.We provide 90 days warranty.

2.If some of the items you received aren't of perfect quality, we would resiponsibly arrange your refund or replacement. But the items must remain their orginal condition.


Q: How does Jotrin guarantee that LT5557EUF is the original manufacturer or agent of LINEAR?
We have a professional business development department to strictly test and verify the qualifications of LINEAR original manufacturers and agents. All LINEAR suppliers must pass the qualification review before they can publish their LT5557EUF devices; we pay more attention to the channels and quality of LT5557EUF products than any other customer. We strictly implement supplier audits, so you can purchase with confidence.
Q: How to find the detailed information of LT5557EUF chips? Including LINEAR original factory information, RF Mixers ; Single, Double & Triple Balanced Mixers application, LT5557EUF pictures?
You can use Jotrin's intelligent search engine, or filter by RF Mixers ; Single, Double & Triple Balanced Mixers category, or find it through Linear Technology Corp. (ADI) Information page.
Q: Are the LINEAR's LT5557EUF price and stock displayed on the platform accurate?
The LINEAR's inventory fluctuates greatly and cannot be updated in time, it will be updated periodically within 24 hours. After submitting an order for LT5557EUF, it is recommended to confirm the order with Jotrin salesperson or online customer service before payment.
Q: Can I place an order offline?
Yes. We accept offline orders.
We can provide order placement service. You only need to log in, click "My Orders" to enter the transaction management, and you will see the "Order Details" interface. After checking it, select all and click "Place Order". In addition, you can enjoy coupons or other selected gifts when placing orders online.
Q: What forms of payment can I use in Jotrin?
TT Bank, Paypal, Credit Card, Western Union, and Escrow is all acceptable.
Q: How is the shipping arranged and track my package?
Customers can choose industry-leading freight companies, including DHL, FedEx, UPS, TNT, and Registered Mail.
Once your order has been processed for shipment, our sales will send you an e-mail advising you of the shipping status and tracking number.
Note: It may take up to 24 hours before carriers will display tracking information. In normal conditions, Express delivery needs 3-5 days, Registered Mail needs 25-60 days.
Q: What is the process for returns or replacement of LT5557EUF?
All goods will implement Pre-Shipment Inspection (PSI), selected at random from all batches of your order to do a systematic inspection before arranging the shipment. If there is something wrong with the LT5557EUF we delivered, we will accept the replacement or return of the LT5557EUF only when all of the below conditions are fulfilled:
(1)Such as a deficiency in quantity, delivery of wrong items, and apparent external defects (breakage and rust, etc.), and we acknowledge such problems.
(2)We are informed of the defect described above within 90 days after the delivery of LT5557EUF.
(3)The LT5557EUF is unused and only in the original unpacked packaging.
Two processes to return the products:
(1)Inform us within 90 days
(2)Obtain Requesting Return Authorizations
More details about return electronic components please see our Return & Change Policy.
Q: How to contact us and get support, such as LT5557EUF datasheet pdf, LT5557 pin diagram?
Need any After-Sales service, please feel free contact us:

Linear Technology Corp. (ADI)

Linear Technology designs, manufactures and markets a wide range of high performance standard integrated circuits. Product applications include telecommunications, cellular phones, networking products, notebook and desktop computers, video/multimedia, industrial instrumentation, automotive electroni...
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