Device Overview

General Description

The MBAL-0220SM is a GaAs passive MMIC balun in a 4mm QFN surface mount package. Its frequency ranges from 2 to 20 GHz and 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. Connectorized evaluation packages are available. The MBAL-0220SM is an excellent choice for balanced amplifiers, clock distribution, and higher order Nyquist sampling in analog to digital converters.

Photo of MBAL-0220SM

Features

  • 2:1 Impedance Ratio
  • 2 GHz to 20 GHz Balun (Balanced to Unbalanced Transformer)
  • Tuned for Optimal Phase/Amplitude Balance
  • RoHS Compliant

Applications

N/A

Functional Block Diagram

Block Diagram

Part Ordering Options

Part NumberDescriptionPackagePacking SizeGreen StatusProduct LifecycleExport Classification
MBAL-0220SMPassive MMIC 2-20 GHz Surface Mount BalunQFN-

REACH

RoHS

ReleasedEAR99
EVAL-MBAL-0220Evaluation Board, Passive MMIC 2-20 GHz Surface Mount BalunEVAL-

REACH

RoHS

ReleasedEAR99
MBAL-0220-TRTape and Reel, Passive MMIC 2-20 GHz Surface Mount BalunQFN7"

REACH

RoHS

ReleasedEAR99

Table Of Contents

Rev: - | Copyright © 2022 - 2026 Marki Microwave LLC.

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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.Equivalent circuit for the Non-connect (NC)
15Out 2 Pin 15 is DC short. Blocking capacitor is optional.Equivalent circuit for the Out 2
16Out 1 Pin 16 is DC short. Blocking capacitor is optional.Equivalent circuit for the Out 1
4Common Pin 4 is DC short. 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.Equivalent circuit for the Ground

Rev: - | Copyright © 2022 - 2026 Marki Microwave LLC.

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Specifications

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

Rev: - | Copyright © 2022 - 2026 Marki Microwave LLC.

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Electrical Specifications

Specifications guaranteed for +25°C, measured in a 50Ω system. Measured data was taken on an Eval Board with output traces having an offset.

ParameterTest ConditionsMinimum
Frequency
(GHz)
Maximum
Frequency
(GHz)
MinTypMaxUnit
Amplitude Balance 1-2 20-0.251dB
Common Mode Rejection -2 202230-dB
Insertion Loss as a Mode Converter 2-2 20-68.5dB
Isolation -2 20-10-dB
Nominal Phase Shift -2 20-1800-°
Phase Balance 3-2 20-310°
VSWR (Common) -2 20-1.4-
VSWR (Output) -2 20-2-
Impedance Ratio -- --2:1-

[1][3] Guaranteed only for eval board.

[2] Includes fixture losses.

Rev: - | Copyright © 2022 - 2026 Marki Microwave LLC.

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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: Scs12 is the Common output response given a single ended input.

Insertion loss as a mode converter graph for MBAL-0220SM
Differential port return loss graph for MBAL-0220SM
Insertion loss of a common mode signal graph for MBAL-0220SM
Reflection converted between differential and common modes graph for MBAL-0220SM
Return loss of a common mode signal graph for MBAL-0220SM
Unbalanced port return loss graph for MBAL-0220SM

Rev: - | Copyright © 2022 - 2026 Marki Microwave LLC.

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Typical Performance Scattering Parameters

Three port scattering parameters measured as three single-ended 50Ω ports showing relationship between any two ports.

Common to output port insertion loss graph for MBAL-0220SM
Return loss for common port and output ports graph for MBAL-0220SM
Phase balance between output ports graph for MBAL-0220SM
Amplitude balance between output ports graph for MBAL-0220SM
Isolation between output ports graph for MBAL-0220SM
Common mode rejection graph for MBAL-0220SM

Rev: - | Copyright © 2022 - 2026 Marki Microwave LLC.

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Mechanical Data

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Evaluation Board - Performance Data

ParameterTest ConditionsFrequency Range (GHz)MinTypMaxUnit
Impedance Ratio---2-

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Evaluation Board - Outline Drawing

Outline Drawing

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