Rev: - | Copyright © 2026 Marki Microwave LLC.

General Description

The MDPX-00011CSP3 is a MMIC surface mount high pass low pass diplexer featuring a 24.7 GHz crossover frequency. 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-00011CSP3 is available as a 3.5x3.5mm CSP3. Low unit to unit variation allows for accurate simulations using the provided S3P file taken from measured production units.

Features

  • Low Insertion Loss, ≤ 2 dB Typical
  • Crossover Point, 24.7 GHz
  • Excellent Return Losses, 18 dB Typical at Common
  • Crossover Isolation, 12dB Typical

Functional Block Diagram

Block Diagram
Photo of MDPX-00011CSP3

Electrical Performance Summary

ParameterTypUnit
Crossover Frequency 24.66GHz

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-00011CSP3Passive MMIC 24.7 GHz Diplexer/Reflectionless filterCSP3

RoHS

REACH

ReleasedEAR99
EVB-MDPX-00011Evaluation Board, Passive MMIC 24.7GHz Diplexer/Reflectionless FilterEVB

RoHS

REACH

ReleasedEAR99

Table Of Contents

Typical Performance Plot

Insertion Loss (dB) graph for MDPX-00011CSP3
Return Loss (dB) graph for MDPX-00011CSP3
Isolation (dB) graph for MDPX-00011CSP3
Common Port Return Loss (dB) graph for MDPX-00011CSP3
Band 1 Insertion Loss (dB) graph for MDPX-00011CSP3
Band 2 Insertion Loss (dB) graph for MDPX-00011CSP3
Band 1 Group Delay (ps) graph for MDPX-00011CSP3
Band 2 Group Delay (ps) graph for MDPX-00011CSP3

All measurements are de-embedded from the fixture with Automatic Fixture Removal (AFR).

Specifications

Electrical Specifications

ParameterTest ConditionsMinimum
Frequency
(GHz)
Maximum
Frequency
(GHz)
MinTypMaxUnit
Band 1: 1 dBc Passband Temp = 25°C
0 20.79---GHz
Band 1: 3 dBc Passband Temp = 25°C
0 24.16---GHz
Band 1: 30 dBc Rejection Point Temp = 25°C
29.07 29.07---GHz
Band 1: Return Loss Temp = 25°C
0 20.79-25.95-dB
Band 1: Group Delay Temp = 25°C
0 20.79-70.41-ps
Band 2: 1 dBc Passband Temp = 25°C
26.67 60---GHz
Band 2: 3 dBc Passband Temp = 25°C
24.96 60---GHz
Band 2: 30 dBc Rejection Point Temp = 25°C
22.28 22.28---GHz
Band 2: Return Loss Temp = 25°C
26.67 60-12.49-dB
Band 2: Group Delay Temp = 25°C
26.67 60-67.86-ps
Crossover Frequency Temp = 25°C
- --24.66-GHz
Crossover Isolation Temp = 25°C
- --12-dB

Absolute Maximum Ratings

ParameterMaximum RatingUnit
DC Current 120mA
Maximum Operating Temperature 100°C
Maximum Storage Temperature 125°C
Minimum Operating Temperature -55°C
Minimum Storage Temperature -65°C

Package Information

ParameterDetailsRating
ESD250 to < 500 VoltsHBM Class 1A
Dimensions-3.50 x 3.50 mm
Moisture Sensitivity Level-MSL 1

Port Configuration and Functions

Port Diagram

Diagram of the port configuration for MDPX-00011CSP3

Port Functions

PortFunctionDescriptionDC Equivalent
Circuit
Pin 1Common/Input Pin 1 is DC short to Pin 3 and open to GND and Pin 5.Equivalent circuit for the Common/Input
Pin 3RF Low Band Pin 3 is DC short to Pin 1 and open to GND and Pin 5Equivalent circuit for the RF Low Band
Pin 5RF High Band Pin 5 is DC open to Pin 1, Pin 3, and GNDEquivalent circuit for the RF High Band

Operation

Application Circuit

Application Circuit for MDPX-00011CSP3

Application Circuit Description

Terminating the High-Pass port (Pin 5) with 50 Ω enables one-way reflectionless low-pass filtering from the Common port (Pin 1) to the Low-Pass port (Pin 3).

Terminating the Low-Pass port (Pin 3) with 50 Ω enables one-way reflectionless high-pass filtering from the Common port (Pin 1) to the High-Pass port (Pin 5).

Mechanical Data

Outline Drawing

Download : Outline 2D Drawing

Outline Drawing

Footprint Image

Footprint of the package for MDPX-00011CSP3

Evaluation Board

Evaluation Board - Outline Drawing

Outline Drawing

Revision History

Revision CodeRevision DateComment
-2026-08-12Initial Release

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