Port Diagram
An x-ray view of the MEQ9-40CSP1 package outline drawing is shown below. The MEQ equalizers are symmetrical allowing Port 1 or Port 2 to be used as the input.
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Device Overview
General Description
The MEQ9-40CSP1 is a passive MMIC equalizer in our compact 1.5mm CSP1 chip scale surface mount package. The MEQ9-40CSP1 provides a positive slope equalization from DC-40 GHz with a DC attenuation of 9 dB, and achieves a 23 dB return loss all in a compact form factor. The chip scale package allows for extreme miniaturization of the SMT footprint while maintaining standard solder reflow processes. Designed for RF systems that prioritize SWAP, this equalizer compensates for frequency-dependent losses and improves gain flatness across broadband signal chains. Common applications include compensating for high frequency amplifier gain roll off, equalizing filter passbands, and improving the eye diagram in high-speed digital systems.
Features
- Small 1.5 x 1.5 mm package size
- DC attenuation of 9 dB
- Typical Insertion Loss 0.8 dB at 40GHz
- Typical Return Loss of 23 dB Over Operating Band
- Low SWaP
- This product embodies Marki Microwave's U.S. Pat. 11,869,858.
Applications
- RF Transceivers
- High-Speed Data
- Telecom
- Amplifier Compensation
- Frequency-Dependent Loss Compensation
Functional Block Diagram
Part Ordering Options
| Part Number | Description | Package | Green Status | Product Lifecycle | Export Classification |
|---|---|---|---|---|---|
| MEQ9-40CSP1 | Chip Scale Package MMIC DC-40 GHz 9 dB Equalizer | CSP1 | REACH RoHS | Released | EAR99 |
| EVB-MEQ9-40 | Evaluation Board, Chip Scale Package MMIC DC-40 GHz 9 dB Equalizer | EVB | REACH RoHS | Released | EAR99 |
| Part Number | Description | Package | Green Status | Product Lifecycle | Export Classification |
|---|---|---|---|---|---|
| MEQ9-40CSP1 | Chip Scale Package MMIC DC-40 GHz 9 dB Equalizer | CSP1 | REACH RoHS | Released | EAR99 |
| EVB-MEQ9-40 | Evaluation Board, Chip Scale Package MMIC DC-40 GHz 9 dB Equalizer | EVB | REACH RoHS | Released | EAR99 |
MEQ9-40CSP1
Chip Scale Package MMIC DC-40 GHz 9 dB Equalizer
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 |
|---|---|---|
| - | 2025-08-13 | Initial Release |
MEQ9-40CSP1
Chip Scale Package MMIC DC-40 GHz 9 dB Equalizer
Port Configuration and Functions
Port Functions
| Port | Function | Description | DC Equivalent Circuit |
|---|---|---|---|
| GND | Ground | SM package ground path is provided through the ground paddle. |  |
| Pin 1 | Input/Output | Pin 1 is DC connected to ground through a resistor. DC block is required if voltage present. |  |
| Pin 2 | Input/Output | Pin 2 is DC connected to ground through a resistor. DC block is required if voltage present. |  |
MEQ9-40CSP1
Chip Scale Package MMIC DC-40 GHz 9 dB Equalizer
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 |
| Port 1 DC Current | 25 | mA |
| Port 2 DC Current | 25 | mA |
| Power Handling, at any Port (25°C) | 30 | dBm |
Package Information
| Parameter | Details | Rating |
|---|---|---|
| ESD | 250 to < 500 Volts | HBM Class 1A |
| Weight | Package name: CSP1 | 0.04g |
| Dimensions | - | 1.50 x 1.50 mm |
| Moisture Sensitivity Level | - | MSL 3 |
MEQ9-40CSP1
Chip Scale Package MMIC DC-40 GHz 9 dB Equalizer
Electrical Specifications
The electrical specifications apply at TA=+25°C in a 50Ω system. Typical data shown is for the equalizer in a CSP1 package with a sine wave input applied to port 1. Min and Max limits are guaranteed at TA=+25°C.
| Parameter | Test Conditions | Minimum Frequency (GHz) | Maximum Frequency (GHz) | Min | Typ | Max | Unit |
|---|---|---|---|---|---|---|---|
| Insertion Loss at DC | Temp = 25°C | 0 | 0 | - | 9.1 | - | dB |
| Insertion Loss | Temp = 25°C | 20 | 20 | - | 4.3 | - | dB |
| Insertion Loss | Temp = 25°C | 40 | 40 | - | 0.8 | - | dB |
| Equalization Value | Temp = 25°C | 0 | 40 | - | 8.3 | - | dB |
| Return Loss | Temp = 25°C | 0 | 40 | - | 23 | - | dB |
| Group Delay | Temp = 25°C | 0 | 40 | - | 16 | - | ps |
| Parameter | Test Conditions | Minimum Frequency (GHz) | Maximum Frequency (GHz) | Min | Typ | Max | Unit |
|---|---|---|---|---|---|---|---|
| Insertion Loss at DC | Temp = 25°C | 0 | 0 | - | 9.1 | - | dB |
| Insertion Loss | Temp = 25°C | 20 | 20 | - | 4.3 | - | dB |
| Insertion Loss | Temp = 25°C | 40 | 40 | - | 0.8 | - | dB |
| Equalization Value | Temp = 25°C | 0 | 40 | - | 8.3 | - | dB |
| Return Loss | Temp = 25°C | 0 | 40 | - | 23 | - | dB |
| Group Delay | Temp = 25°C | 0 | 40 | - | 16 | - | ps |
Equalizer is symmetrical. Reverse measurement is equivalent to forward measurement. All measurements taken in EVB package and de-embedded to the CSP1 pad interface.
MEQ9-40CSP1
Chip Scale Package MMIC DC-40 GHz 9 dB Equalizer
Typical Performance Plot
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MEQ9-40CSP1
Chip Scale Package MMIC DC-40 GHz 9 dB Equalizer
Mechanical Data
MEQ9-40CSP1
Chip Scale Package MMIC DC-40 GHz 9 dB Equalizer
Footprint Image
Download : Footprint Drawing
MEQ9-40CSP1
Chip Scale Package MMIC DC-40 GHz 9 dB Equalizer
Evaluation Board - Outline Drawing
