Rev: B | Copyright © 2017, 2019, 2023 Marki Microwave LLC.

General Description

The MDPX-2734 is a broadband passive MMIC diplexer, a combination high pass and loss pass filter, capable of multiplexing low frequency DC to 27GHz and high frequency 34 to 60GHz 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-2734 is available as a wire bondable chip. Low unit to unit variation allow for accurate simulations using the provided S3P file taken from measured production units.

Features

  • 30GHz Crossover Point
  • Low <1dB typical Insertion Loss in Pass band
  • High Stop Band Suppression
  • RoHS Compliant

Functional Block Diagram

Block Diagram
Photo of MDPX-2734CH

Electrical Performance Summary

ParameterTypUnit
30 dBc Low Pass Rejection Point 45dB
1 dBc High Passband 34 to 60GHz
1 dBc Low Passband 0 to 27GHz

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-2734CHPassive MMIC 0 - 60 GHz High Frequency DiplexerCH

REACH

RoHS

ReleasedEAR99

Table Of Contents

Typical Performance Plots

Insertion Loss (dB) graph for MDPX-2734CH
Adjacent Isolation (dB) graph for MDPX-2734CH
Insertion Loss (dB) graph for MDPX-2734CH
Insertion Loss (dB) graph for MDPX-2734CH
Return Loss (dB) graph for MDPX-2734CH
Return Loss (dB) graph for MDPX-2734CH
Band 1 Group Delay (ps) graph for MDPX-2734CH

Specifications

Electrical Specifications

Specifications guaranteed +25°C for chip (CH) package, measured in a 50Ω system.

ParameterTest ConditionsMinimum
Frequency
(GHz)
Maximum
Frequency
(GHz)
MinTypMaxUnit
30 dBc Low Pass Rejection Point DC to 17 GHz
0 172745-dB
Common Port Return Loss 34 to 60 GHz
34 601016-dB
Common Port Return Loss DC to 27 GHz
0 271021-dB
High Pass Filter, Pass Band Insertion Loss 34 to 60 GHz
34 60-0.9-dB
High Pass Filter, Pass Band Return Loss 34 to 60 GHz
34 601015-dB
Impedance -- --50-Ω
Isolation 16 to 27 GHz
16 27-20-dB
Isolation 34 to 42 GHz
34 42-17-dB
Isolation 42 to 60 GHz
42 602633-GHz
Isolation DC to 16 GHz
0 162538-dB
Low Pass Filter, Pass Band Insertion Loss DC to 27 GHz
0 27-0.5-dB
Low Pass Filter, Pass Band Return Loss DC to 27 GHz
0 271023-dB
Low Pass Filter, Stop Band Rejection 43 to 60 GHz
43 602733-dB
1 dBc High Passband -- -34-60GHz
1 dBc Low Passband -- -0-27GHz

Absolute Maximum Ratings

ParameterMaximum RatingUnit
Maximum Storage Temperature 125°C
Maximum Survivable Operating Temperature 125°C
Minimum Storage Temperature -65°C
Minimum Survivable Operating Temperature -65°C
RF Power Handling 30dBm
Spec Guaranteed Operating Temperature 25°C

Package Information

ParameterDetailsRating
Dimensions-2.28 x 1.25 mm

Port Configuration and Functions

Port Diagram

Diagram of the port configuration for MDPX-2734CH

Port Functions

PortFunctionDescriptionDC Equivalent
Circuit
GNDGround CH package ground path is provided through the substrate and ground bond pads.Equivalent circuit for the Ground
Pad 1RF Low Band Pad 1 is DC short to Pad 3 and open to Pad 1.Equivalent circuit for the RF Low Band
Pad 2RF High Band Pad 2 is DC open to Pad 1 and Pad 3.Equivalent circuit for the RF High Band
Pad 3Common/Input Pad 3 is DC short to Pad 1 and open to Pad 2.Equivalent circuit for the Common/Input

Die Mounting Recommendations

Mounting and Bonding Recommendations

Marki MMICs should be attached directly to a ground plane with conductive epoxy. The ground plane electrical impedance should be as low as practically possible. This will prevent resonances and permit the best possible electrical performance. Datasheet performance is only guaranteed in an environment with a low electrical impedance ground.

Mounting - To epoxy the chip, apply a minimum amount of conductive epoxy to the mounting surface so that a thin epoxy fillet is observed around the perimeter of the chip. Cure epoxy according to manufacturer instructions.

Wire Bonding - Ball or wedge bond with 0.025 mm (1 mil) diameter pure gold wire. Thermosonic wirebonding with a nominal stage temperature of 150 °C and a ball bonding force of 40 to 50 grams or wedge bonding force of 18 to 22 grams is recommended. Use the minimum level of ultrasonic energy to achieve reliable wirebonds. Wirebonds should be started on the chip and terminated on the package or substrate. All bonds should be as short as possible <0.31 mm (12 mils).

Circuit Considerations – 50 Ω transmission lines should be used for all high frequency connections in and out of the chip. Wirebonds should be kept as short as possible, with multiple wirebonds recommended for higher frequency connections to reduce parasitic inductance. In circumstances where the chip more than .001” thinner than the substrate, a heat spreading spacer tab is optional to further reduce bondwire length and parasitic inductance.

Handling Precautions

General Handling: Chips should be handled with a vacuum collet when possible, or with sharp tweezers using well trained personnel. The surface of the chip is fragile and should not be contacted if possible.

Static Sensitivity: GaAs MMIC devices are subject to static discharge, and should be handled, assembled, tested, and transported only in static protected environments.

Cleaning and Storage: Do not attempt to clean the chip with a liquid cleaning system or expose the bare chips to liquid. Once the ESD sensitive bags the chips are stored in are opened, chips should be stored in a dry nitrogen atmosphere.

Bonding Diagram

Mdpx 2734 Ch Bonding Diagram

Mechanical Data

Outline Drawing

Download : Outline 2D Drawing

Outline Drawing

Notes:

  1. CH substrate is .004 Thick GaAs.
  2. I/O traces and ground plane finish is 2 microns Au.

Revision History

Revision CodeRevision DateComment
-2017-02-01Datasheet initial Release
A2019-05-01Added more Insertion Loss charts
B2023-12-19Updated dimensions on outline drawing.

Notes

DATA SHEET NOTES:

  1. Measured typical data available for chip only.
  2. Group delay calculated using wrapped phase response.
  3. Specifications are subject to change without notice. Contact Marki Microwave for the most recent specifications and data sheets.
  4. Catalog circuits are continually improved. Configuration control requires custom model numbers and specifications.

Note: Exposure to maximum rating conditions for extended periods may reduce device reliability. There is no damage to device with only one parameter set at the limit and all other parameters set at or below their nominal value. Exceeding any of the limits listed here may result in permanent damage to the device.

DISCLAIMER

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