Overview
The FSA4157P6X is a high-performance Single Pole/Double Throw (SPDT) analog switch produced by onsemi. This device is part of the FSA4157 and FSA4157A series, known for their ultra-low on-resistance (RON) and wide operating voltage range. Although the FSA4157 series is discontinued and not recommended for new designs, it remains relevant for existing applications and maintenance. The FSA4157P6X is fabricated using sub-micron CMOS technology, ensuring fast switching speeds and break-before-make operation.
Key Specifications
| Parameter | Min | Typ | Max | Unit |
|---|---|---|---|---|
| VCC Supply Voltage | 1.65 | - | 5.5 | V |
| RON Switch On Resistance (at 4.5 V VCC) | - | 1.15 | - | Ω |
| RON Flatness (at 4.5 V VCC) | - | 0.3 | - | Ω |
| tON Turn-On Time (at 4.5 V VCC) | - | 35 | 40 | ns |
| tOFF Turn-Off Time (at 4.5 V VCC) | - | 15 | 20 | ns |
| ICC Quiescent Supply Current (at 5.5 V VCC) | - | 0.5 | 1.0 | μA |
| Operating Temperature Range | -40 | - | 85 | °C |
| Storage Temperature Range | -65 | - | 150 | °C |
Key Features
- Ultra-low on-resistance (RON) of 1.15 Ω maximum at 4.5 V VCC.
- Broad VCC operating range: 1.65 V to 5.5 V for FSA4157 and 2.7 V to 5.5 V for FSA4157A.
- Fast turn-on and turn-off times.
- Break-before-make enable circuitry.
- Over-voltage tolerant TTL-compatible control circuitry.
- Space-saving 6-lead MicroPak and SC70 packages.
- Pb-free and RoHS compliant.
- Low quiescent current, especially when the control voltage is lower than the VCC supply (FSA4157A).
Applications
The FSA4157P6X is suitable for various applications requiring high-performance analog switching, including:
- Mobile handsets: Direct interface with baseband processor general-purpose I/Os due to low quiescent current.
- Audio and video signal routing.
- Industrial control systems.
- Medical devices requiring low on-resistance and fast switching times.
- Consumer electronics where space-saving packages are beneficial.
Q & A
- What is the maximum on-resistance (RON) of the FSA4157P6X at 4.5 V VCC?
The maximum on-resistance (RON) is 1.15 Ω at 4.5 V VCC.
- What is the operating voltage range for the FSA4157 and FSA4157A?
The operating voltage range is 1.65 V to 5.5 V for FSA4157 and 2.7 V to 5.5 V for FSA4157A.
- What are the typical turn-on and turn-off times for the FSA4157P6X?
The typical turn-on time is 35 ns, and the typical turn-off time is 15 ns at 4.5 V VCC.
- Is the FSA4157P6X Pb-free and RoHS compliant?
- What are the package options available for the FSA4157P6X?
The device is available in space-saving 6-lead MicroPak and SC70 packages.
- Why is the FSA4157A particularly suited for mobile handset applications?
The FSA4157A features very low quiescent current even when the control voltage is lower than the VCC supply, making it suitable for mobile handset applications.
- What is the maximum junction temperature for the FSA4157P6X?
The maximum junction temperature is +150°C.
- What is the recommended storage temperature range for the FSA4157P6X?
The recommended storage temperature range is -65°C to +150°C.
- Does the FSA4157P6X have over-voltage tolerant TTL-compatible control circuitry?
- What is the break-before-make time for the FSA4157P6X?
The break-before-make time is approximately 20 ns for FSA4157 and 25 ns for FSA4157A at 4.5 V VCC.
