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  • MAX2140ETH+TD

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SDARS Receiver with Fractional-N PLL, LNA, RF AGC, IF AGC, and Differential I/Q Interface

  • Package/Case :
  • QFN
  • Product Categories :
  • Radio Receivers
  • RoHs Status:
  • Lead free / RoHS Compliant
  • In-stock:
  • 4445


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MAX2140ETH+TD Product Details

The MAX2140ETH+TD complete receiver is designed for satellite digital audio radio services (SDARS). The device includes a fully monolithic VCO and only needs a SAW at the IF and a crystal to generate the reference frequency. To form a complete SDARS radio, the MAX2140ETH+TD requires only a low-noise amplifier (LNA), which can be controlled by a baseband controller. The small number of external components needed makes the MAX2140-based platform the lowest cost and the smallest solution for SDARS. The receiver includes a self-contained RF AGC loop and baseband-controlled IF AGC loop, effectively providing a total dynamic range of over 92dB. Channel selectivity is ensured by the SAW filter and by on-chip monolithic lowpass filters. The fractional-N PLL allows a very small frequency step, making possible the implementation of an AFC loop. Additionally, the reference is provided by an external XTAL and on-chip oscillator. A reference buffer output is also provided. A 2-wire interface (I2C bus compatible) programs the circuit for a wide variety of conditions, providing features such as:
  • Programmable gains
  • Lowpass filters tuning
  • Individual functional block shutdown
The MAX2140ETH+TD minimizes the requirement on the baseband controller. No compensation or calibration procedures are required. The device is available in a 7mm x 7mm 44-pin thin QFN package.


  • Integrated Receiver, Requires Only One SAW Filter
  • Self-Contained RF AGC Loop
  • Differential I/Q Interface
  • Complete Integrated Frequency Generation
  • Bias Supply for External LNAs
  • Overcurrent Protection
  • Low-Power Standby Mode
  • Very Small 44-Pin Thin QFN Package


  • 2.4GHz ISM Radios
  • Satellite Digital Audio Radio Services (SDARS)

MAX2140ETH+TD Block Diagram
(Picture: Diagram)

Technical Parameters

  • Ref. Clock Freq. (MHz)
  • -
  • IF Output Freq. (MHz)
  • -
  • Noise Figure (typ) (dB)
  • -
  • Vsupply (V)
  • -
  • Isupply (mA)
  • -
  • Applications
  • 2.4GHz ISM ,SDARS ,Satellite
  • Solutions
  • SAT
  • Band/ Freq. (MHz)
  • 2200 to 2500
  • Features
  • 44-Pin Thin QFN ,Bias Supply For External LNAs ,Differential I/Q Interface ,Integrated Frac-N PLL ,Integrated Receiver ,Low Supply Current ,Overcurrent Protection ,Requires Only One SAW Filter
  • Footprint (mm x mm)
  • 7.0 x 7.0
  • Package/Pins
  • TQFN/44
  • Smallest Available Pckg. (max w/pins) (mm2)
  • 50.4
  • Industry Qualified
  • Automotive - AECQ100
  • RoHS Available
  • Yes
  • Budgetary Price (See Notes)
  • $8.06 @1k

MAX2140ETH+TD Documents

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Estimated Delivery Time: Oct 03 - Oct 08 days (choose Expedited at checkout).

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    We have rich products, can meet your various needs.

  • Minimum order quantity starts from 1pcs.

    Minimum order quantity starts from 1pcs.

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    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

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

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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 MAX2140ETH+TD is the original manufacturer or agent of MAXIM?
We have a professional business development department to strictly test and verify the qualifications of MAXIM original manufacturers and agents. All MAXIM suppliers must pass the qualification review before they can publish their MAX2140ETH+TD devices; we pay more attention to the channels and quality of MAX2140ETH+TD products than any other customer. We strictly implement supplier audits, so you can purchase with confidence.
Q: How to find the detailed information of MAX2140ETH+TD chips? Including MAXIM original factory information, Radio Receivers application, MAX2140ETH+TD pictures?
You can use Jotrin's intelligent search engine, or filter by Radio Receivers category, or find it through Maxim Integrated Information page.
Q: Are the MAXIM's MAX2140ETH+TD price and stock displayed on the platform accurate?
The MAXIM's inventory fluctuates greatly and cannot be updated in time, it will be updated periodically within 24 hours. After submitting an order for MAX2140ETH+TD, it is recommended to confirm the order with Jotrin salesperson or online customer service before payment.
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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 MAX2140ETH+TD?
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 MAX2140ETH+TD we delivered, we will accept the replacement or return of the MAX2140ETH+TD 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 MAX2140ETH+TD.
(3)The MAX2140ETH+TD 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 MAX2140ETH+TD datasheet pdf, MAX2140 pin diagram?
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Maxim Integrated

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