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ATD20-0040PSM
20dB DC - 40GHz MMIC Differential Attenuator
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.
| Parameter | Typ | Unit |
|---|---|---|
| Frequency Range | 0 to 40 | GHz |
| Attenuation | 19.9 | dB |
| Return Loss | 23 | dB |
| Attenuation Flatness | 0.7 | dB |
Summary only – refer to the Electrical Specifications, Absolute Maximum Ratings, and Recommended Operating Range tables for complete details.
| 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 |
Measured data is de-embedded from fixture using AFR.
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.
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 |
|---|---|---|---|---|---|---|---|
| Frequency Range | - | 0 | 40 | - | - | - | GHz |
| Attenuation | Configuration A, Temp = 25°C | 0 | 40 | - | 19.9 | - | dB |
| Return Loss | Configuration A, Temp = 25°C | 0 | 40 | - | 23 | - | dB |
| Attenuation Flatness 1 | Configuration A, 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)
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.
| Parameter | Details | Rating |
|---|---|---|
| ESD | 250 to < 500 Volts | HBM Class 1A |
| Dimensions | - | 2.0 x 1.3 mm |
| Moisture Sensitivity Level | - | MSL 1 |
| 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. | |
Download : Outline 2D Drawing Outline 3D Drawing Outline 3D STP
Download : Footprint Drawing
| Revision Code | Revision Date | Comment |
|---|---|---|
| - | 2026-05-26 | Initial Release |
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