Rev: B | Copyright © 2017, 2019 Marki Microwave LLC.

General Description

The MBAL-0104SM is a GaAs passive MMIC balun in a 4mm QFN surface mount package. It features excellent amplitude and phase balance across its 1 to 4 GHz frequency range that offers a 2:1 impedance ratio. The 4mm QFN package is a lead free, RoHS compliant package compatible with standard leaded and lead-free solder reflows. SMA connectorized evaluation packages are available. The MBAL-0104SM is an excellent choice for balanced amplifiers, clock distribution, and higher order Nyquist sampling in analog to digital converters.

Features

  • 2:1 Impedance Ratio
  • 1 GHz to 4 GHz Balun (Balanced to Unbalanced Transformer)
  • Transforms 50 Ω Input to 100 Ω Differential (50 Ohm Single) Output
  • Tuned for Optimal Phase/Amplitude Balance

Functional Block Diagram

Block Diagram
Photo of MBAL-0104SM

Electrical Performance Summary

ParameterTypUnit
Frequency Range1 to 4GHz
Insertion Loss as a Mode Converter 2.5dB
Phase Balance 2°
Amplitude Balance 0dB
Impedance Ratio 2:1-
Common Mode Rejection 33dB

Summary only – refer to the Electrical Specifications, Absolute Maximum Ratings, and Recommended Operating Range tables for complete details.

Part Ordering Options

Part NumberDescriptionPackagePacking SizeGreen StatusProduct LifecycleExport Classification
MBAL-0104SMPassive MMIC 1-4GHz Surface Mount BalunQFN-

REACH

RoHS

ReleasedEAR99
EVAL-MBAL-0104Evaluation Board, Passive MMIC 1-4GHz Surface Mount BalunEVAL-

REACH

RoHS

ReleasedEAR99
MBAL-1040-TRTape and Reel, Passive MMIC 1-4GHz Surface Mount BalunQFN7"

REACH

RoHS

ReleasedEAR99

Table Of Contents

Typical Performance Scattering Parameters

Three port scattering parameters measured as three single-ended 50Ω ports showing relationship between any two ports. For example: S21 and S31, often referred to as insertion loss of a balun, is the output response on ports 2 and 3 with an input stimulus on port 1.

Insertion Loss (dB) graph for MBAL-0104SM
Return Loss (dB) graph for MBAL-0104SM
Isolation (dB) graph for MBAL-0104SM
Amplitude Balance (dB) graph for MBAL-0104SM
Phase Balance (dB) graph for MBAL-0104SM
Common Mode Rejection (dB) graph for MBAL-0104SM

Mixed Mode Scattering Parameters

Mixed mode scattering parameters are used to characterize differential circuits. For baluns, this means that the 0° and 180° ports become a single 100Ω differential port and the common port remains the same 50Ω common port. The two-port s-parameters of the balun are then characterized based on differential (d), common mode (c), or single-ended (s) signals. For example: S12ds is the differential output response given a single ended input.

S11dd graph for MBAL-0104SM
S11dc graph for MBAL-0104SM
S12ds graph for MBAL-0104SM
S11cd graph for MBAL-0104SM
S11cc graph for MBAL-0104SM
S12cs graph for MBAL-0104SM
S21sd graph for MBAL-0104SM
S21sc graph for MBAL-0104SM
s22ss graph for MBAL-0104SM

Specifications

Electrical Specifications

ParameterTest ConditionsMinimum
Frequency
(GHz)
Maximum
Frequency
(GHz)
MinTypMaxUnit
Frequency Range-1 4---GHz
Amplitude Balance -1 4-00.5dB
Common Mode Rejection -1 42533-dB
Isolation -1 4-8-dB
Nominal Phase Shift -1 4-180-°
Phase Balance -1 4-25°
VSWR (Common) -1 4-1.25--
VSWR (Output) -1 4-3.6--
Impedance Ratio -- --2:1--
Insertion Loss as a Mode Converter 1-1 1-2.55dB

[1] For port locations and I/O designations, refer to Port Functions section.

Absolute Maximum Ratings

ParameterMaximum RatingUnit
Maximum Operating Temperature 125°C
Maximum Storage Temperature 125°C
Minimum Operating Temperature -65°C
Minimum Storage Temperature -65°C
RF Power Handling 30dBm

Package Information

ParameterDetailsRating
Dimensions-4 x 4 mm
Moisture Sensitivity Level-MSL 1

Port Configuration and Functions

Port Functions

PortFunctionDescriptionDC Equivalent
Circuit
1-3, 5-14, 17-24Non-connect (NC) These pins are not connected internally. Datasheet performance is tested with NC pins grounded.-
15Out 2 Pin 15 is DC short. Blocking capacitor is optional.Equivalent circuit for the Out 2
4Common Pin 4 is DC open and AC matched to 50 Ω from 1 to 4 GHz. Blocking capacitor is optional.Equivalent circuit for the Common
PaddleGround Ground pad should be connected to RF/DC ground with low electrical and thermal resistance.-
Pin 16Out 1 Pin 16 is DC short. Blocking capacitor is optional.Equivalent circuit for the Out 1

Operation

Application Information

1. Balun measured as a splitter. Combiner measurement is equivalent to splitter measurement.
2. Specifications are subject to change without notice. Contact Marki Microwave for the most recent specifications and data sheets.
3. Catalog circuits are continually improved. Configuration control requires custom model numbers and specifications

Mechanical Data

Outline Drawing

Download : Outline 2D Drawing Outline 3D Drawing Outline 3D STP

Outline Drawing

Evaluation Board

Evaluation Board - Electrical Specification

ParameterTest ConditionsMinimum
Frequency
(GHz)
Maximum
Frequency
(GHz)
MinTypMaxUnit
Frequency Range-- ----GHz
Impedance Ratio -- --2:1--

Revision History

Revision CodeRevision DateComment
-2017-01-01Datasheet initial Release
A2019-08-01PCB Footprint Corrected
B2019-10-01Mixed Mode Scattering Parameters added

DISCLAIMER

MARKI MICROWAVE, LLC., (“MARKI”) PROVIDES TECHNICAL SPECIFICATIONS AND DATA (INCLUDING DATASHEETS), APPLICATION OR OTHER DESIGN ADVICE, WEB TOOLS, AND OTHER INFORMATION AND RESOURCES “AS IS” AND WITH ALL FAULTS. MARKI DISCLAIMS ALL WARRANTIES, EXPRESS OR IMPLIED, INCLUDING, WITHOUT LIMITATION, ANY IMPLIED WARRANTIES OF MERCHANTABILITY, FITNESS FOR A PARTICULAR PURPOSE, OR NON-INFRINGEMENT.

These resources are intended for developers skilled in the art designing with Marki products. You are solely responsible for (1) selecting the appropriate products for your application, (2) designing, validating, and testing your application, and (3) ensuring your application meets applicable standards and other requirements. Marki makes no guarantee regarding the suitability of its products for any particular purpose, nor does Marki assume any liability whatsoever arising out of your use or application of any Marki product.

Marki grants you permission to use these resources only for development of an application that uses Marki products. Other reproduction or use of these resources is strictly prohibited. No license is granted to any other Marki intellectual property or to any third-party intellectual property. Marki reserves the right to make changes to the product(s) or information contained herein without notice.

MARKI MICROWAVE, M wave logo, FastSwitch, and T3 MIXER are trademarks or registered trademarks of Marki Microwave, LLC. All other trademarks used are the property of their respective owners.

© 2017, 2019, Marki Microwave, LLC