MBAL-1445SM_MMIC 14-45GHz Isolation Balun

Device Overview

General Description

MBAL-1445 is a high isolation MMIC balun. Passive GaAs MMIC technology allows production of smaller constructions that replace larger form factor circuit board constructions. Tight fabrication tolerances result in less unit to unit variation than traditional balun technologies, allowing for accurate simulations using the provided S3P file taken from measured production units. Baluns are passive reciprocal devices allowing either single ended to differential or differential to single ended conversion. The MBAL-1445SM is available as a 4 X 4 mm QFN package. Evaluation boards are also available.

Download s-parameters here

Features

2:1 Impedance Ratio
14GHz to 45GHz Balun (Balanced to Unbalanced Transformer)
High Isolation
High CMRR
RoHS Compliant

Applications

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

Functional Block Diagram

Part Ordering Options

Part Number	Description	Package	Green Status	Product Lifecycle	Export Classification
MBAL-1445SM	MMIC 14-45GHz Isolation Balun	QFN	REACH RoHS	Released	EAR99
EVAL-MBAL-1445	Evaluation Board, MMIC 14-45GHz Isolation Balun	EVAL	REACH RoHS	Released	EAR99

Part Number

Description

Package

Green Status

Product Lifecycle

Export Classification

MBAL-1445SM

MMIC 14-45GHz Isolation Balun

QFN

REACH

RoHS

Released

EAR99

EVAL-MBAL-1445

Evaluation Board, MMIC 14-45GHz Isolation Balun

EVAL

REACH

RoHS

Released

EAR99

Part Number	Description	Package	Green Status	Product Lifecycle	Export Classification
MBAL-1445SM	MMIC 14-45GHz Isolation Balun	QFN	REACH RoHS	Released	EAR99
EVAL-MBAL-1445	Evaluation Board, MMIC 14-45GHz Isolation Balun	EVAL	REACH RoHS	Released	EAR99

Part Number

Description

Package

Green Status

Product Lifecycle

Export Classification

MBAL-1445SM

MMIC 14-45GHz Isolation Balun

QFN

REACH

RoHS

Released

EAR99

EVAL-MBAL-1445

Evaluation Board, MMIC 14-45GHz Isolation Balun

EVAL

REACH

RoHS

Released

EAR99

Device Overview
Port Configuration and Functions
- Port Diagram
- Port Functions
Revision History
Specifications
Mechanical Data
- Outline Drawing
Footprint Image
Evaluation Board
- Evaluation Board - Performance Data
- Evaluation Board Outline Drawing

Revision History

Revision Code	Revision Date	Comment
A	2020-12-01	Performance over Temperature plots
-	2022-06-01	Initial Datasheet Release
B	2022-08-01	Updated Max Power Handling
C	2024-10-16	Updated ESD information

Port Configuration and Functions

Port Diagram

A bottom-up view of the MBAL-1445SM’s SM 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-1445SM

Port Functions

Port	Function	Description
Pad	Ground	SM package ground path is provided through the ground paddle.
Pin 1	Differential/ 0° Balanced	The 0° port is DC short to ground.
Pin 13	Unbalanced/ Single ended	The common port is DC open to ground.
Pin 5	Differential / 180° Balanced	The 180° port is DC short to ground.

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.

Parameter	Maximum Rating	Unit
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	30	dBm

Package Information

Parameter	Details	Rating
ESD	250 to < 500 Volts	HBM Class 1A
Dimensions	-	4 x 4 mm
Moisture Sensitivity Level	-	MSL 1

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 measured data is taken from the eval board without de-embedding of the connectors and traces.

Parameter	Test Conditions	Minimum Frequency (GHz)	Maximum Frequency (GHz)	Min	Typ	Max	Unit
Amplitude Balance	-	14	40	-	0.2	1	dB
Amplitude Balance	-	40	45	-	0.5	-	dB
Common Mode Rejection	-	14	45	19	33	-	dB
Impedance	-	-	-	-	50	-	Ω
Impedance Ratio	-	-	-	-	2:1	-
Insertion Loss as a Mode Converter	-	14	45	-	4.5	-	dB
Isolation	-	14	45	10	18	-	dB
Nominal Phase Shift	-	14	45	-	180	-	°
Phase Balance	-	14	45	-	2.5	10	°
VSWR	-	14	45	-	1.6	-

Parameter	Test Conditions	Minimum Frequency (GHz)	Maximum Frequency (GHz)	Min	Typ	Max	Unit
Amplitude Balance	-	14	40	-	0.2	1	dB
Amplitude Balance	-	40	45	-	0.5	-	dB
Common Mode Rejection	-	14	45	19	33	-	dB
Impedance	-	-	-	-	50	-	Ω
Impedance Ratio	-	-	-	-	2:1	-
Insertion Loss as a Mode Converter	-	14	45	-	4.5	-	dB
Isolation	-	14	45	10	18	-	dB
Nominal Phase Shift	-	14	45	-	180	-	°
Phase Balance	-	14	45	-	2.5	10	°
VSWR	-	14	45	-	1.6	-

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: Scs21 is the Common output response given a single ended input.