Rev: - | Copyright © 2024 Marki Microwave LLC.

General Description

The MPD-0R502CH is a small footprint MMIC 2-Way Wilkinson power divider/power splitter featuring high isolation. The MPD-0R502CH uses a mix of lumped element and distributed circuits to significantly reduce the footprint while maintaining isolation at low frequencies. It is much smaller than a printed PCB Wilkinson Power Divider/Combiner. It can be used as an equal amplitude/phase power splitter or a power combiner with excellent isolation. Tight fabrication tolerances result in less unit-to-unit variation than traditional power divider technologies, allowing for accurate simulations using the provided S3P file taken from measured production units.

Features

  • Can be used as a splitter or combiner
  • Excellent equal amplitude and phase balance
  • High isolation
  • RoHS compliant

Functional Block Diagram

Block Diagram
Photo of MPD-0R502CH

Electrical Performance Summary

ParameterTypUnit
Frequency Range0.5 to 2GHz
Phase Balance 0.1°
Excess Insertion Loss 1.1dB
No. Ways Wilkinson 1:2-
Amplitude Balance 0.02dB
Isolation 20dB

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
MPD-0R502CH0.5 - 2 GHz MMIC 2-Way Wilkinson Power Divider/Power SplitterCH

REACH

RoHS

ReleasedEAR99

Table Of Contents

Typical Performance Plots

Insertion Loss (dB) graph for MPD-0R502CH
Return Loss (dB) graph for MPD-0R502CH
Amplitude Balance (dB) graph for MPD-0R502CH
Phase Balance (°) graph for MPD-0R502CH
Isolation (dB) graph for MPD-0R502CH

Specifications

Electrical Specifications

The electrical specifications apply at TA=+25°C in a 50Ω system. Min and Max limits are guaranteed at TA=+25°C.

ParameterTest ConditionsMinimum
Frequency
(GHz)
Maximum
Frequency
(GHz)
MinTypMaxUnit
Frequency Range-0.5 2---GHz
Amplitude Balance -0.5 2-0.02-dB
Common Port Return Loss -0.5 2-20-dB
Excess Insertion Loss 1-0.5 2-1.1-dB
Impedance -0.5 2-50-Ω
Isolation -0.5 2-20-dB
Nominal Phase Shift -0.5 2-0-°
Nominal Power Splitting -0.5 2-3-dB
Output Return Loss -0.5 2-18-dB
Phase Balance -0.5 2-0.1-°

[1] Excess Insertion Loss = (Input Port to Common Port Insertion Loss) - 3dB

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
DC Current 40mA
Maximum Operating Temperature 100°C
Maximum Storage Temperature 125°C
Minimum Operating Temperature -55°C
Minimum Storage Temperature -65°C

Package Information

ParameterDetailsRating
ESD< 250 VoltsHBM Class 0
Dimensions-3.55 x 3.55 mm

Port Configuration and Functions

Port Diagram

A top-down view of the MPD-0R502CH package outline drawing is shown below. The MMIC Power dividers are passive reciprocal devices allowing either power splitting or power combining.

Diagram of the port configuration for MPD-0R502CH

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 1Input/Common The common port is DC short to the other two ports and open to ground.Equivalent circuit for the Input/Common
Pad 2Output 1 The output 1 port is DC short to the other two ports and open to ground.Equivalent circuit for the Output 1
Pad 3Output 2 The output 2 port is DC short to the other two ports and open to groundEquivalent circuit for the Output 2

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. Bond wire inductance will improve return loss. Bondwire inductance in the range of 30pH to 200pH will improve performance.

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. Refer to table on page 11 for wirebond recommendation. In circumstances where the chip is more than .001” thinner than the substrate, a heat spreading spacer tab is optional to further reduce bondwire length and parasitic inductance.

Bonding Diagram

Mpd 0 R502 Ch Bonding Diagram

Handling Precautions

General Handling

Chips should be handled with care using tweezers or a vacuum collet. Users should take precautions to protect chips from direct human contact that can deposit contaminants, like perspiration and skin oils on any of the chip's surfaces.

Static Sensitivity

GaAs MMIC devices are sensitive to ESD 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.

Mechanical Data

Outline Drawing

Download : Outline 2D Drawing

Outline Drawing

Revision History

Revision CodeRevision DateComment
-2024-08-19Initial Release

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