Rev: - | Copyright © 2025 Marki Microwave LLC.

General Description

The MDPX-00010CSP3 is a MMIC surface mount balanced diplexer featuring a 20.3 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-00010CSP3 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, ≤ 1 dB Typical
  • Crossover Point, 20.3 GHz
  • Excellent Return Losses, 17 dB Typical
  • Highpass-Lowpass Isolation, 33 dB Typical

Functional Block Diagram

Block Diagram
Photo of MDPX-00010CSP3

Electrical Performance Summary

ParameterTypUnit
30 dBc Low Pass Rejection Point 8.65GHz
1 dBc High Passband 20.71GHz
Crossover Frequency 20.28GHz
30 dBc High Pass Rejection Point 18.05GHz
1 dBc Low Passband 17.29GHz

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-00010CSP3Passive MMIC 20.3 GHz Diplexer/Reflectionless FilterCSP3

RoHS

REACH

ReleasedEAR99
EVB-MDPX-00010Evaluation Board, Passive MMIC 20.3GHz Diplexer/Reflectionless FilterEVB

RoHS

REACH

ReleasedEAR99

Table Of Contents

Typical Performance Plot

Insertion Loss (dB) graph for MDPX-00010CSP3
High Pass Insertion Loss (dB) graph for MDPX-00010CSP3
Low Pass Insertion Loss (dB) graph for MDPX-00010CSP3
Highpass-Lowpass Isolation (dB) graph for MDPX-00010CSP3
Return Loss (dB) graph for MDPX-00010CSP3
Common Port Return Loss (dB) graph for MDPX-00010CSP3
Low Pass Group Delay (ps) graph for MDPX-00010CSP3
High Pass Group Delay (ps) graph for MDPX-00010CSP3

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

Specifications

Electrical Specifications

ParameterTest ConditionsMinimum
Frequency
(GHz)
Maximum
Frequency
(GHz)
MinTypMaxUnit
1 dBc High Passband Temp = 25°C
- -20.71--GHz
3 dBc High Passband Temp = 25°C
- -20.37--GHz
30 dBc High Pass Rejection Point Temp = 25°C
- -18.05--GHz
High Passband Return Loss Temp = 25°C
- --21-dB
High Pass Isolation Temp = 25°C
- --13-dB
High Pass Group Delay Temp = 25°C
- --229-ps
1 dBc Low Passband Temp = 25°C
- ---17.29GHz
3 dBc Low Passband Temp = 25°C
- ---19.78GHz
30 dBc Low Pass Rejection Point Temp = 25°C
- ---8.65GHz
Low Passband Return Loss Temp = 25°C
- --24-dB
Low Pass Isolation Temp = 25°C
- --48-dB
Low Pass Group Delay Temp = 25°C
- --77-ps
Crossover Isolation Temp = 25°C
- --14-dB
Crossover Frequency Temp = 25°C
- --20.28-GHz
Common Port Return Loss Temp = 25°C
- --23-dB
Impedance Temp = 25°C
- --50-Ω
Low Pass Group Delay Temp = 25°C
- --80-ps

Absolute Maximum Ratings

ParameterMaximum RatingUnit
Maximum Operating Temperature 100°C
Maximum Storage Temperature 125°C
Minimum Operating Temperature -55°C
Minimum Storage Temperature -65°C
DC Current 72mA

Package Information

ParameterDetailsRating
ESD< 250 VoltsHBM Class 0
Dimensions-3.50 x 3.50 mm
Moisture Sensitivity Level-MSL 1

Port Configuration and Functions

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, Pin3, and Pin 5Equivalent circuit for the RF High Band

Operation

Application Circuit

Application Circuit for MDPX-00010CSP3

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-00010CSP3

Evaluation Board

Evaluation Board - Outline Drawing

Outline Drawing

Revision History

Revision CodeRevision DateComment
-2025-10-21Initial Release

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