Device Overview

General Description

The ATN00-0070CSP2 is a surface mount GaAs MMIC attenuator in a chip scale package (CSP). This attenuator is an ideal solution for attenuating a signal and can be used in a wide range of applications. The ATN00-0070CSP2 features a typical 0.3 dB attenuation with 1 dB attenuation flatness and 25 dB return loss across the DC-70 GHz bandwidth. The CSP allows for extreme miniaturization of SMT footprint while providing die-level performance. GaAs MMIC technology provides consistent unit-to-unit performance in a small, low-cost form factor. A 50-ohm match is maintained over the entire operating frequency range.

Photo of ATN00-0070CSP2

Features

  • 2.5 x 2.5 mm chip scale package
  • 0.3 dB attenuation
  • 1 dB attenuation flatness
  • 25 dB return loss
  • 1 W RF Power Handling
  • This product embodies Marki Microwave's U.S. Pat. 11,869,858.

Applications

  • 5G
  • Test Equipment
  • Precision Characterization
  • Airborne Applications
  • Amplitude Matching
  • High Channel Count Systems

Functional Block Diagram

Block Diagram

Part Ordering Options

Part NumberDescriptionPackageGreen StatusProduct LifecycleExport Classification
ATN00-0070CSP2Chip Scale Package MMIC DC - 70 GHz 0dB AttenuatorCSP2

REACH

RoHS

ReleasedEAR99

Table Of Contents

Revision History

Revision CodeRevision DateComment
-2026-01-06Initial Release

Rev: - | Copyright © 2026 Marki Microwave LLC.

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Port Configuration and Functions

Port Diagram

Diagram of the port configuration for ATN00-0070CSP2

Rev: - | Copyright © 2026 Marki Microwave LLC.

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Port Functions

PortFunctionDescriptionDC Equivalent
Circuit
Ground PaddleGround CSP package ground path is provided through the ground paddle.Equivalent circuit for the Ground
Pin 1Non-connect (NC) Pin 1 is not connected internally and can be tied to RF ground.-
Pin 2Input/Output Pin 2 and Pin 5 are DC connected to each other and ground through a T-network of resistors.Equivalent circuit for the Input/Output
Pin 3Non-connect (NC) Pin 3 is not connected internally and can be tied to RF ground.-
Pin 4Non-connect (NC) Pin 4 is not connected internally and can be tied to RF ground.-
Pin 5Input/Output Pin 2 and Pin 5 are DC connected to each other and ground through a T-network of resistors.Equivalent circuit for the Input/Output

Rev: - | Copyright © 2026 Marki Microwave LLC.

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Specifications

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
Maximum Operating Temperature 100°C
Maximum Storage Temperature 125°C
Minimum Operating Temperature -55°C
Minimum Storage Temperature -65°C
RF Power Handling 1W
DC Current 650mA

Package Information

ParameterDetailsRating
ESD250 to < 500 VoltsHBM Class 1A
Dimensions-2.50 x 2.50 mm
Moisture Sensitivity Level-MSL 1

Rev: - | Copyright © 2026 Marki Microwave LLC.

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Electrical Specifications

The electrical specifications apply at TA=+25°C in a 50Ω system. Typical data shown is for the attenuator in a CSP2 package with a sine wave input applied to port 1.

ParameterTest ConditionsMinimum
Frequency
(GHz)
Maximum
Frequency
(GHz)
MinTypMaxUnit
Attenuation Temp = 25°C
0 70-0.3-dB
Return Loss Temp = 25°C
0 70-25-dB
Attenuation Flatness 1Temp = 25°C
0 70-1.0-dB

[1] Attenuation Flatness = Max(Insertion Loss) - Min(Insertion Loss)

Rev: - | Copyright © 2026 Marki Microwave LLC.

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Typical Performance Plot

Attenuation (dB) graph for ATN00-0070CSP2
Return Loss (dB) graph for ATN00-0070CSP2

Rev: - | Copyright © 2026 Marki Microwave LLC.

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Mechanical Data

Outline Drawing

Download : Outline 2D Drawing

Outline Drawing

Rev: - | Copyright © 2026 Marki Microwave LLC.

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Rev: - | Copyright © 2026 Marki Microwave LLC.

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