FSA4159P6X

Overview

The FSA4159P6X is a low-voltage, single-pole double-throw (SPDT) analog switch fabricated with sub-micron CMOS technology. It operates within a wide supply voltage range of 1.65 V to 5.50 V and features an ultra-low on-resistance (RON) of 1 Ω at 4.5 V VCC. The device supports a continuous switch current of 200 mA and includes power-off isolation when VCC is 0 V. It offers fast turn-on and turn-off times, with maximum values of 35 ns and 30 ns respectively at 4.5 V to 5.50 V. The component is housed in a space-saving, lead-free, 6-lead SC-70 surface-mount package.

Feature Summary

• Ultra-low on-resistance for minimal signal loss
• Power-off isolation capability when supply voltage is zero
• Low quiescent current even when control voltage is below supply voltage
• Break-before-make enable circuitry to prevent signal shorting

Applications

• Cellular phones
• Portable media players
• Personal digital assistants (PDAs)

Procurement Notes

Verify the specific ordering suffix P6X corresponds to the SC-70 6-lead package and tape & reel shipping configuration. Confirm that the operating temperature range meets the application requirements of -40°C to +85°C. Ensure compliance with RoHS standards and Pb-Free status as specified in the datasheet. Check for any specific lot traceability codes or assembly plant markings required by the procurement specification.

Selection Notes

Select this component for applications requiring low voltage operation between 1.65 V and 5.50 V. Consider the 1 Ω on-resistance at 4.5 V for high-performance signal switching. Evaluate the 200 mA continuous switch current limit against load requirements. Verify that the SC-70 package dimensions fit the PCB layout constraints. Ensure the control interface logic levels are compatible with the VIH and VIL specifications across the operating voltage range.

Part Context

The FSA4159 is part of onsemi's low-voltage analog switch portfolio designed for mobile and portable electronics. It utilizes sub-micron CMOS technology to achieve fast switching speeds while maintaining low power consumption. The device is specifically engineered to interface directly with baseband processor general-purpose I/Os, making it suitable for space-constrained designs in handheld devices.

Replacement Considerations

The FSA4159L6X is a verified alternative from the same manufacturer, offering identical electrical characteristics but packaged in a MicroPak SIP6 format instead of the SC-70 package used by the FSA4159P6X. Both parts share the same SPDT functionality and operating parameters.