Rev: - | Copyright © 2024 Marki Microwave LLC.

General Description

The MDPX-00004PSM is a MMIC surface mount diplexer capable of multiplexing low frequency DC to 6 GHz and high frequency 8 to 28 GHz signals. Passive GaAs MMIC technology allows production of smaller filter constructions that replace larger form factor circuit board constructions. Tight fabrication tolerances allow for less unit-to-unit variation than traditional filter technologies. The MDPX-00004PSM is available as a 4x4mm QFN and connectorized evaluation board. Low unit to unit variation allows for accurate simulations using the provided S3P file taken from measured production units.

Features

  • Excellent ≤1dB Insertion Loss
  • 7 GHz Crossover Point
  • High Stop Band Suppression
  • Reflectionless Filter

Functional Block Diagram

Block Diagram
Photo of MDPX-00004PSM

Electrical Performance Summary

ParameterTypUnit
30 dBc Low Pass Rejection Point 7.85 to 7.85GHz
1 dBc High Passband 8.29 to 27.87GHz
Cross Over Frequency 7.21 to 7.21GHz
30 dBc High Pass Rejection Point 6.31 to 6.31dB
1 dBc Low Passband 0 to 5.61GHz

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
MDPX-00004PSMPassive MMIC 7GHz Diplexer/Reflectionless FilterQFN

RoHS

REACH

ReleasedEAR99
EVB-MDPX-00004PEvaluation Board, Passive MMIC 7 GHz Diplexer/Reflectionless FilterEVB

RoHS

REACH

ReleasedEAR99

Table Of Contents

Typical Performance Plot

Insertion Loss (dB) graph for MDPX-00004PSM
Highpass-Lowpass Isolation (dB) graph for MDPX-00004PSM
Low Pass Insertion Loss (dB) graph for MDPX-00004PSM
High Pass Insertion Loss (dB) graph for MDPX-00004PSM
Return Loss (dB) graph for MDPX-00004PSM
Common Port Return Loss (dB) graph for MDPX-00004PSM
Lowpass Group Delay (ps) graph for MDPX-00004PSM
Highpass Group Delay (ps) graph for MDPX-00004PSM

Specifications

Electrical Specifications

The electrical specifications apply at TA=+25°C in a 50Ω system. Typical data shown is for the filter in a PSM package with a sine wave input applied to Pin 17. Min and Max limits are guaranteed at TA=+25°C.

ParameterTest ConditionsMinimum
Frequency
(GHz)
Maximum
Frequency
(GHz)
MinTypMaxUnit
1 dBc High Passband -- -8.29-27.87GHz
1 dBc Low Passband -- -0-5.61GHz
30 dBc High Pass Rejection Point -6.31 6.31---dB
30 dBc Low Pass Rejection Point -7.85 7.85---GHz
3 dBc High Passband -7.5 ----GHz
3 dBc Low Passband -- 6.8---GHz
Common Port Return Loss -0 28-20-dB
Cross Over Frequency -7.21 7.21---GHz
Crossover Isolation -5.61 8.29-15-dB
Group Delay, High Band -- --59-ps
Group Delay, Low Band -- --149-ps
High Band Center Frequency -18.08 18.08---GHz
High Pass Filter, Pass Band Insertion Loss -- --0.5-dB
High Pass Filter, Pass Band Return Loss -8.29 27.87-19-dB
High Pass Isolation -8.29 27.87-52-dB
Impedance -- --50-Ω
Low Band Center Frequency -2.81 2.81---GHz
Low Pass Filter, Pass Band Insertion Loss -- --0.6-dB
Low Pass Filter, Pass Band Return Loss -0 5.61-31-dB
Low Pass Isolation -0 5.61-47-dB

Absolute Maximum Ratings

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

ParameterMaximum RatingUnit
Maximum Operating Temperature 100°C
Maximum Storage Temperature 100°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

Port Configuration and Functions

Port Diagram

A top-down x-ray view of the MDPX-00004PSM’s PSM package outline drawing is shown below. Input to the diplexer is on Pin 17, Pin 3 will be the output after passing through a high pass filter and Pin 9 will be the output after passing through the low pass filter.

Diagram of the port configuration for MDPX-00004PSM

Port Functions

PortFunctionDescriptionDC Equivalent
Circuit
Ground PaddleGround PSM package ground path is provided through the ground paddle and should be connected to RF ground.Equivalent circuit for the Ground
Pin 17Common/Input Pin 17 is DC short to Pin 9 and open to GND and Pin 3.Equivalent circuit for the Common/Input
Pin 3RF High Band Pin 3 is DC short to GND and open to the other ports.Equivalent circuit for the RF High Band
Pin 9RF Low Band Pin 9 is DC short to Pin 17 and open to GND and Pin 3.Equivalent circuit for the RF Low Band

Operation

Application Information

Example Reflectionless Filter

Terminating the High-Pass port (Pin 3) with 50 Ω enables one-way reflectionless low-pass filtering from the Common port (Pin 17) to the Low-Pass port (Pin 9).

Terminating the Low-Pass port (Pin 9) with 50 Ω enables one-way reflectionless high-pass filtering from the Common port (Pin 17) to the High-Pass port (Pin 3).

Mdpx 0000 X Psm Example Reflectionless Filter

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
-2024-12-04Initial Release

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