Port Diagram
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Device Overview
General Description
The ATD20-0040PSM is a surface mount GaAs MMIC 20dB differential attenuator housed in a DFN package. This attenuator is an ideal solution for attenuating differential signals and can be used in a wide range of applications. The compact DFN package allows for extreme miniaturization of SMT footprints. 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.
Features
- Small 1.3 x 2.0 mm Package Size
- 20dB Attenuation From DC to 40 GHz
- 23dB Typical Return Loss Over Operating Band
Applications
- Test Equipment
- Electronic Warfare
- Radar and satellite communications
- High Channel Count Systems
Functional Block Diagram
Part Ordering Options
| Part Number | Description | Package | Green Status | Product Lifecycle | Export Classification |
|---|---|---|---|---|---|
| ATD20-0040PSM | 20dB DC - 40GHz MMIC Differential Attenuator | DFN | REACH RoHS | Released | EAR99 |
| EVB-ATD20-0040P | Evaluation Board, 20dB DC-40 GHz Differential Attenuator | EVB | REACH RoHS | Released | EAR99 |
| Part Number | Description | Package | Green Status | Product Lifecycle | Export Classification |
|---|---|---|---|---|---|
| ATD20-0040PSM | 20dB DC - 40GHz MMIC Differential Attenuator | DFN | REACH RoHS | Released | EAR99 |
| EVB-ATD20-0040P | Evaluation Board, 20dB DC-40 GHz Differential Attenuator | EVB | REACH RoHS | Released | EAR99 |
ATD20-0040PSM
20dB DC - 40GHz MMIC Differential Attenuator
Table Of Contents
- Device Overview
- Port Configuration and Functions
- Revision History
- Specifications
- Mechanical Data
- Footprint Image
- Evaluation Board
Revision History
| Revision Code | Revision Date | Comment |
|---|---|---|
| - | 2026-05-26 | Initial Release |
ATD20-0040PSM
20dB DC - 40GHz MMIC Differential Attenuator
Port Configuration and Functions
ATD20-0040PSM
20dB DC - 40GHz MMIC Differential Attenuator
Port Functions
| Port | Function | Description | DC Equivalent Circuit |
|---|---|---|---|
| Ground Paddle | Gnd | Ground paddle should be connected to RF ground |  |
| Pin 1 | Input/Output 1 | Pin 1 and Pin 4 are DC connected to each other and ground through a T-network of resistors. |  |
| Pin 2 | Non-connect (NC) | Pin 2 is not connected internally and should be tied to RF ground. |  |
| Pin 3 | Input/Output 2 | Pin 3 and Pin 6 are DC connected to each other and ground through a T-network of resistors. | |
| Pin 4 | Input/Output 1 | Pin 4 and Pin 1 are DC connected to each other and ground through a T-network of resistors. | |
| Pin 5 | Non-connect (NC) | Pin 5 is not connected internally and should be tied to RF ground. | |
| Pin 6 | Input/Output 2 | Pin 6 and Pin 3 are DC connected to each other and ground through a T-network of resistors. | |
ATD20-0040PSM
20dB DC - 40GHz MMIC Differential Attenuator
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.
| Parameter | Maximum Rating | Unit |
|---|---|---|
| Maximum Operating Temperature | 100 | °C |
| Maximum Storage Temperature | 125 | °C |
| Minimum Operating Temperature | -55 | °C |
| Minimum Storage Temperature | -65 | °C |
| DC Current | 48 | mA |
| RF Power Handling | 1.5 | W |
Power handling tested with a continuous wave at 18GHz.
Package Information
| Parameter | Details | Rating |
|---|---|---|
| ESD | 250 to < 500 Volts | HBM Class 1A |
| Dimensions | - | 2.0 x 1.3 mm |
| Moisture Sensitivity Level | - | MSL 1 |
ATD20-0040PSM
20dB DC - 40GHz MMIC Differential Attenuator
Electrical Specifications
The electrical specifications apply at TA=+25°C in a 50Ω system. Min and Max limits are guaranteed at TA=+25°C. Attenuation paths 1 and 2 are symmetrical and have the same typical performance.
| Parameter | Test Conditions | Minimum Frequency (GHz) | Maximum Frequency (GHz) | Min | Typ | Max | Unit |
|---|---|---|---|---|---|---|---|
| Attenuation | Temp = 25°C | 0 | 40 | - | 19.9 | - | dB |
| Return Loss | Temp = 25°C | 0 | 40 | - | 23 | - | dB |
| Attenuation Flatness 1 | Temp = 25°C | 0 | 40 | - | 0.7 | - | dB |
| Phase Balance | - | 0 | 40 | - | 0.7 | - | ° |
| Amplitude Balance | - | 0 | 40 | - | 0.1 | - | dB |
| Parameter | Test Conditions | Minimum Frequency (GHz) | Maximum Frequency (GHz) | Min | Typ | Max | Unit |
|---|---|---|---|---|---|---|---|
| Attenuation | Temp = 25°C | 0 | 40 | - | 19.9 | - | dB |
| Return Loss | Temp = 25°C | 0 | 40 | - | 23 | - | dB |
| Attenuation Flatness 1 | Temp = 25°C | 0 | 40 | - | 0.7 | - | dB |
| Phase Balance | - | 0 | 40 | - | 0.7 | - | ° |
| Amplitude Balance | - | 0 | 40 | - | 0.1 | - | dB |
[1] Attenuation Flatness = Max(Insertion Loss) - Min(Insertion Loss)
ATD20-0040PSM
20dB DC - 40GHz MMIC Differential Attenuator
Typical Performance Plot
ATD20-0040PSM
20dB DC - 40GHz MMIC Differential Attenuator
Typical Mixed Mode Performance Plots
Mixed mode scattering parameters are used to characterize differential circuits. For differential attenuators this means that the 2 input ports become a single 100Ω differential port and the 2 output ports become a single 100Ω differential port. The two-port s-parameters of the differential attenuators are then characterized based on differential (d) signals.
Measured data is de-embedded from fixture using AFR.
ATD20-0040PSM
20dB DC - 40GHz MMIC Differential Attenuator
Mechanical Data
ATD20-0040PSM
20dB DC - 40GHz MMIC Differential Attenuator
Footprint Image
Download : Footprint Drawing
ATD20-0040PSM
20dB DC - 40GHz MMIC Differential Attenuator
Evaluation Board - Outline Drawing
