Device Overview

General Description

The MBAL-1440 is a MMIC isolation balun. Passive GaAs MMIC technology allows production of smaller constructions that replace larger form factor circuit board constructions. Tight fabrication tolerances allow for less unit to unit variation than traditional balun technologies. The MBAL-1440 is available as a wire bondable chip. Low unit to unit variation allow for accurate simulations using the provided S3P file taken from measured production units.

Photo of MBAL-1440CH

Features

  • 2:1 Impedance Ratio
  • 14GHz to 40GHz Balun (Balanced to Unbalanced Transformer)
  • High Isolation
  • High CMRR
  • Low Excess Insertion Loss

Applications

  • High-Speed Track-and-Hold Amplifiers
  • Digital to Analog Converters
  • Balanced Amplifiers
  • Signal Integrity

Functional Block Diagram

Block Diagram

Part Ordering Options

Part NumberDescriptionPackageGreen StatusProduct LifecycleExport Classification
MBAL-1440CHMMIC 14-40GHz Isolation BalunCH

REACH

RoHS

ReleasedEAR99

Table Of Contents

Revision History

Revision CodeRevision DateComment
-2018-05-01Datasheet Initial Release
A2020-07-01Specs table update
B2022-09-01Updated Max Power Handling

Rev: B | Copyright © 2018, 2020, 2022 Marki Microwave LLC.

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Port Configuration and Functions

Port Diagram

A top-down view of the MBAL-1440CH package outline drawing is shown below. The MMIC baluns are passive reciprocal devices allowing either single ended to differential or differential to single ended conversion.

Diagram of the port configuration for MBAL-1440CH

Port Functions

PortFunctionDescriptionDC Equivalent
Circuit
GNDGround CH package ground path is provided through the substrate and ground bond pads.Equivalent circuit for the Ground
Port 1Common Port / In (Unbalanced) The common port is DC open to ground.Equivalent circuit for the Common Port / In (Unbalanced)
Port 2Out 1 / 0° Port (Balanced) The 0° port is DC short to ground.Equivalent circuit for the Out 1 / 0° Port (Balanced)
Port 3Out 2 / 180° Port (Balanced) The 180° port is DC short to ground.Equivalent circuit for the Out 2 / 180° Port (Balanced)

Rev: B | Copyright © 2018, 2020, 2022 Marki Microwave LLC.

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Specifications

Absolute Maximum Ratings

The Absolute Maximum Ratings indicate limits beyond which damage may occur to the device. If these limits are exceeded, the device may be inoperable or have a reduced lifetime.

ParameterMaximum RatingUnit
Maximum Operating Temperature 100°C
Maximum Storage Temperature 125°C
Minimum Operating Temperature -55°C
Minimum Storage Temperature -65°C
Power Handling, at any Port 30dBm

Package Information

ParameterDetailsRating
Dimensions-2.28 x 1.25 mm

Rev: B | Copyright © 2018, 2020, 2022 Marki Microwave LLC.

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Electrical Specifications

The electrical specifications apply at TA=+25°C in a 50Ω system. Min and Max limits are guaranteed at TA=+25°C. All bare die are 100% DC tested and visually inspected.

ParameterTest ConditionsMinimum
Frequency
(GHz)
Maximum
Frequency
(GHz)
MinTypMaxUnit
Amplitude Balance -14 40-0.20.8dB
Common Mode Rejection -14 401935-dB
Excess Insertion Loss (dB) -14 40-1.55dB
Impedance -- --50-Ω
Insertion Loss as a Mode Converter -14 40-35.65dB
Isolation -14 40813-dB
Nominal Phase Shift -14 40-180-°
Phase Balance -14 40-1.18.5°
VSWR -14 40-1.8-
Impedance Ratio -- --2:1-

Rev: B | Copyright © 2018, 2020, 2022 Marki Microwave LLC.

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Typical Performance Plots

Insertion Loss (dB) graph for MBAL-1440CH
Return Loss (dB) graph for MBAL-1440CH
Isolation (dB) graph for MBAL-1440CH
Common Mode Rejection (dB) graph for MBAL-1440CH
Amplitude Balance (dB) graph for MBAL-1440CH
Phase Balance (degree) graph for MBAL-1440CH
Band 1 Group Delay (ps) graph for MBAL-1440CH
Differential Group Delay (ps) graph for MBAL-1440CH

Rev: B | Copyright © 2018, 2020, 2022 Marki Microwave LLC.

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Mechanical Data

Outline Drawing

Download : Outline 2D Drawing

Outline Drawing

Rev: B | Copyright © 2018, 2020, 2022 Marki Microwave LLC.

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