Rev: - | Copyright © 2025 Marki Microwave LLC.

General Description

The MEQ6-40CSP1 is a passive MMIC equalizer in our compact 1.5mm CSP1 chip scale surface mount package. The MEQ6-40CSP1 provides a positive slope equalization from DC-40 GHz with a DC attenuation of 6 dB, and achieves a 21 dB return loss all in a compact form factor. The chip scale package allows for extreme miniaturization of the SMT footprint while maintaining standard solder reflow processes. Designed for RF systems that prioritize SWAP, this equalizer compensates for frequency-dependent losses and improves gain flatness across broadband signal chains. Common applications include compensating for high frequency amplifier gain roll off, equalizing filter passbands, and improving the eye diagram in high-speed digital systems.

Features

  • Small 1.5 x 1.5 mm package size
  • DC attenuation of 6 dB
  • Typical Insertion Loss 0.6 dB at 40GHz
  • Typical Return Loss of 21 dB Over Operating Band
  • Low SWaP
  • This product embodies Marki Microwave's U.S. Pat. 11,869,858.

Functional Block Diagram

Block Diagram
Photo of MEQ6-40CSP1

Electrical Performance Summary

ParameterTypUnit
Frequency Range0 to 40GHz
Return Loss 21dB
Insertion Loss 0.6dB
Insertion Loss at DC 6.0dB

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

Part Ordering Options

Part NumberDescriptionPackageGreen StatusProduct LifecycleExport Classification
MEQ6-40CSP1Chip Scale Package MMIC DC-40 GHz 6 dB EqualizerCSP1

REACH

RoHS

ReleasedEAR99
EVB-MEQ6-40Evaluation Board, Chip Scale Package MMIC DC-40 GHz 6 dB EqualizerEVB

REACH

RoHS

ReleasedEAR99

Table Of Contents

Typical Performance Plot

Insertion Loss (dB) graph for MEQ6-40CSP1
Return Loss (dB) graph for MEQ6-40CSP1
Group Delay (ps) graph for MEQ6-40CSP1

Specifications

Electrical Specifications

The electrical specifications apply at TA=+25°C in a 50Ω system. Typical data shown is for the equalizer in a CSP1 package with a sine wave input applied to port 1. Min and Max limits are guaranteed at TA=+25°C.

ParameterTest ConditionsMinimum
Frequency
(GHz)
Maximum
Frequency
(GHz)
MinTypMaxUnit
Frequency Range-0 40---GHz
Insertion Loss at DC Configuration A, Temp = 25°C
0 0-6.0-dB
Insertion Loss Configuration A, Temp = 25°C
20 20-3.0-dB
Insertion Loss Configuration A, Temp = 25°C
40 40-0.6-dB
Equalization Value Configuration A, Temp = 25°C
0 40-5.4-dB
Return Loss Configuration A, Temp = 25°C
0 40-21-dB
Group Delay Configuration A, Temp = 25°C
0 40-16-ps

Equalizer is symmetrical. Reverse measurement is equivalent to forward measurement. All measurements taken in EVB package and de-embedded to the CSP1 pad interface.

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
Port 1 DC Current 25mA
Port 2 DC Current 25mA
Power Handling, at any Port (25°C) 30dBm

Package Information

ParameterDetailsRating
ESD250 to < 500 VoltsHBM Class 1A
WeightPackage name: CSP10.04g
Dimensions-1.50 x 1.50 mm
Moisture Sensitivity Level-MSL 3

Port Configuration and Functions

Port Diagram

An x-ray view of the MEQ6-40CSP1 package outline drawing is shown below. The MEQ equalizers are symmetrical allowing Port 1 or Port 2 to be used as the input.

Diagram of the port configuration for MEQ6-40CSP1

Port Functions

PortFunctionDescriptionDC Equivalent
Circuit
GNDGround SM package ground path is provided through the ground paddle.Equivalent circuit for the Ground
Pin 1Input/Output Pin 1 is DC connected to ground through a resistor. DC block is required if voltage present.Equivalent circuit for the Input/Output
Pin 2Input/Output Pin 2 is DC connected to ground through a resistor. DC block is required if voltage present.Equivalent circuit for the Input/Output

Mechanical Data

Outline Drawing

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

Outline Drawing

Evaluation Board

Evaluation Board - Outline Drawing

Outline Drawing

Revision History

Revision CodeRevision DateComment
-2025-08-13Initial Release

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.

© 2025, Marki Microwave, LLC