1. Overview

️· Product: MASW4060 GaAs SP4T (Single-Pole, Four-Throw) Switch
️· Application: Designed for switching RF signals in various applications.
️· Back-Metallization: Pd/Ni/Au (100/1,000/10,000Å) - allows for eutectic die attachment or epoxy mounting.
️· Datasheet Status: Advanced/Preliminary (Meaning it's not a finalized product spec, and specs might change)

2. Electrical Characteristics (Key Specs)

️· Frequency Range: Operates within a range suitable for RF applications (specific range implied by typical performance graphs).
️· Control Voltages: Requires 0V to -0.2V for one control port (V1) and -5V for the other (V2).
️· Insertion Loss: (See typical performance graph - around 0.5dB at 2 GHz)
️· Isolation: (See typical performance graph - approximately 60 dB at 2 GHz)
️· VSWR: (See typical performance graph - approximately 1.2 at 2 GHz)
️· Input Power (IP2 & IP3):
- IP2: +45 dBm (at 0.5 GHz) / +60 dBm (0.5-4.0 GHz)
- IP3: +35 dBm (at 0.5 GHz) / +46 dBm (0.5-4.0 GHz)
️· Control Current: 25-200 µA (dependent on control port)
️· Switching Time (Rise/Fall): Approximately 2 ns
️· TON/TOFF: Approximately 4 ns

3. Mounting & Handling

️· Die Attachment: Can be eutectic-bonded (using AuSn) or epoxied.
️· Eutectic Bonding: Recommended work surface temperature of 225°C, tool temperature of 265°C, nitrogen/hydrogen atmosphere (90/10). Avoid temperatures exceeding 320°C for more than 20 seconds.
️· Epoxy Mounting: Apply a thin epoxy fillet around the chip’s perimeter. Cure according to manufacturer’s instructions.
️· Handling Precautions – Critical!
- ESD Sensitivity: Requires ESD protection - ground all equipment and personnel.
- Cleanliness: Handle in a clean environment; do not clean after installation.
- Bias: Crucially, apply bias to either V1 or V2 *only when the other is grounded*. Do not allow either control port to "float".
- General Handling: Use sharp-tipped tweezers, avoid touching the chip surface.

4. Truth Table (Switch Configuration)

The truth table defines the RF port connections based on the control voltages applied to V1 and V2:

A1	B1	A2	B2	A3	B3	A4	B4	ANT-RF1	ANT-RF2	ANT-RF3	ANT-RF4
1	0	0	1	0	1	0	1	On	Off	Off	Off
0	1	1	0	0	1	0	1	Off	On	Off	Off
0	1	0	1	1	0	0	1	Off	Off	On	Off
0	1	0	1	0	1	1	0	Off	Off	Off	On

️· `1` = 0V to -0.2V
️· `0` = -5V

Key Takeaway: The "Do Not Float" Instruction is absolutely critical to prevent damage. Always ground the unpowered control line.