MBAL-0220CSP2-1_2-20 GHz Passive MMIC Chip Scale Package Balun

Device Overview

General Description

The MBAL-0220CSP2-1 is a GaAs passive MMIC balun featuring a frequency range of 2 to 20 GHz. This balun offers low 1.9 dB insertion loss as a mode converter, excellent balance and 27 dB common mode rejection in a compact 2.5 mm CSP2 chip scale package. The leadfree, RoHS compliant CSP2 package is compatible with standard pick and place assembly. It is an ideal solution to interface into dataconverters for S-K band digital beamforming and other higher order Nyquist sampling applications, clock distribution, and balanced amplifiers. The MBAL-0220CSP2-1 is the mirror image orientation of the MBAL-0220CSP2.

Download s-parameters here

Features

2:1 Impedance Ratio
2 to 20 GHz Balun (Balanced to Unbalanced Transformer)
Insertion Loss as a Mode Converter, 1.9 dB Typical
Common Mode Rejection, 27 dB Typical
Phase/Amplitude Balance, 3º and 0.3 dB Typical
2.5 x 2.5 mm Package
This product embodies Marki Microwave's U.S. Pat. 11,869,858.

Applications

Balanced Receivers
Signal Integrity
Analog to Digital Converters
Balanced Amplifiers
Clock Distribution

Functional Block Diagram

Part Ordering Options

Part Number	Description	Package	Green Status	Product Lifecycle	Export Classification
MBAL-0220CSP2-1	2-20 GHz Passive MMIC Chip Scale Package Balun	CSP2	REACH RoHS	Released	EAR99
EVB-MBAL-0220-1	Evaluation Board, 2-20 GHz Passive MMIC Chip Scale Package Balun	EVB	REACH RoHS	Released	EAR99

Part Number

Description

Package

Green Status

Product Lifecycle

Export Classification

MBAL-0220CSP2-1

2-20 GHz Passive MMIC Chip Scale Package Balun

CSP2

REACH

RoHS

Released

EAR99

EVB-MBAL-0220-1

Evaluation Board, 2-20 GHz Passive MMIC Chip Scale Package Balun

EVB

REACH

RoHS

Released

EAR99

Part Number	Description	Package	Green Status	Product Lifecycle	Export Classification
MBAL-0220CSP2-1	2-20 GHz Passive MMIC Chip Scale Package Balun	CSP2	REACH RoHS	Released	EAR99
EVB-MBAL-0220-1	Evaluation Board, 2-20 GHz Passive MMIC Chip Scale Package Balun	EVB	REACH RoHS	Released	EAR99

Part Number

Description

Package

Green Status

Product Lifecycle

Export Classification

MBAL-0220CSP2-1

2-20 GHz Passive MMIC Chip Scale Package Balun

CSP2

REACH

RoHS

Released

EAR99

EVB-MBAL-0220-1

Evaluation Board, 2-20 GHz Passive MMIC Chip Scale Package Balun

EVB

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
-	2025-11-18	Initial Release

Port Configuration and Functions

Port Diagram

Diagram of the port configuration for MBAL-0220CSP2-1

Port Functions

Port	Function	Description
GND	Ground	Ground pad should be connected to RF/DC ground with low electrical and thermal resistance.
Pin 1	Common Port / In (Unbalanced)	The common port is DC open to ground.
Pin 3	Out 2 / 180° Port (Balanced)	The 180° port is DC short to ground.
Pin 4	Out 1 / 0° Port (Balanced)	The 0° port is DC short to ground.
Pins 2,5	NC	Pins 2 and 5 are not internally connected. They can be connected to ground for normal operation.

Specifications

Absolute Maximum Ratings

Parameter	Maximum Rating	Unit
Maximum Operating Temperature	100	°C
Maximum Storage Temperature	125	°C
Minimum Operating Temperature	-55	°C
Minimum Storage Temperature	-65	°C
RF Power Handling	36	dBm

Package Information

Parameter	Details	Rating
ESD	250 to < 500 Volts	HBM Class 1A
Dimensions	-	2.50 x 2.50 mm

Electrical Specifications

Parameter	Test Conditions	Minimum Frequency (GHz)	Maximum Frequency (GHz)	Min	Typ	Max	Unit
Impedance Ratio	-	2	20	-	2:1	-
Amplitude Balance	-	2	20	-	0.3	1	dB
Common Mode Rejection	-	2	20	20	27	-	dB
Common Port Return Loss	-	2	20	-	13	-	dB
Impedance	-	2	20	-	50	-	Ω
Insertion Loss as a Mode Converter	-	3	20	-	1.9	4	dB
Insertion Loss as a Mode Converter	-	2	3	-	1.4	6	dB
Isolation	-	2	20	-	5	-	dB
Nominal Phase Shift	-	2	20	-	180	-	°
Output Return Loss	-	2	20	-	7	-	dB
Phase Balance	-	2	20	-	3	10	°

Parameter	Test Conditions	Minimum Frequency (GHz)	Maximum Frequency (GHz)	Min	Typ	Max	Unit
Impedance Ratio	-	2	20	-	2:1	-
Amplitude Balance	-	2	20	-	0.3	1	dB
Common Mode Rejection	-	2	20	20	27	-	dB
Common Port Return Loss	-	2	20	-	13	-	dB
Impedance	-	2	20	-	50	-	Ω
Insertion Loss as a Mode Converter	-	3	20	-	1.9	4	dB
Insertion Loss as a Mode Converter	-	2	3	-	1.4	6	dB
Isolation	-	2	20	-	5	-	dB
Nominal Phase Shift	-	2	20	-	180	-	°
Output Return Loss	-	2	20	-	7	-	dB
Phase Balance	-	2	20	-	3	10	°

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.