TS4100ITQ1633T

Analog Switches - Special Purpose Overview

The TS4100ITQ1633T is an 8-channel analog multiplexer from the Silicon Labs TS410x family, housed in a 16-pin TQFN-16 (3.3 mm) package with an exposed paddle. It operates on a supply voltage range of 0.8 V to 5.25 V and supports input signal swings up to 5.25 V. The device features an on-resistance of 80 Ω typical at higher voltages, with less than 1% flatness variation across the entire signal swing. Supply current is 675 nA, and leakage currents are guaranteed below 0.5 nA. It functions within a temperature range of –40 °C to +85 °C.

Analog Switches - Special Purpose Feature Summary

• Rail-to-Rail Plus operation allows input signals to exceed the supply voltage while maintaining consistent performance.
• High linearity achieved through less than 1% on-resistance variation over the full signal swing range.
• Ultra-low power consumption with a supply current of 675 nA and minimal off/on leakage currents.

Analog Switches - Special Purpose Applications

• Low Voltage Battery-Operated Equipment
• Precision Measurement Systems
• Analog Signal Processing
• Communication Circuits
• Audio Signal Routing

Analog Switches - Special Purpose Procurement Notes

Verify the ordering suffix 'T' indicates tape and reel packaging rather than tube. Confirm the specific part number matches the required 8-channel configuration. Ensure the design accommodates the exposed paddle for thermal management and electrical grounding as specified in the datasheet.

Analog Switches - Special Purpose Selection Notes

Select this component when low-voltage operation down to 0.8 V is required alongside high signal integrity. The Rail-to-Rail Plus feature is critical for applications where input signals must exceed the system supply voltage. Consider the 80 Ω on-resistance and 675 nA supply current for power-sensitive designs requiring precise analog switching.

Analog Switches - Special Purpose Part Context

This component belongs to the TS410x family, which includes the TS4101 dual 4-channel multiplexer and the TS4102 triple SPDT switch. All variants share the same 16-pin TQFN package and core technology but differ in channel count and topology. The TS4100 specifically provides a single 8:1 multiplexing path controlled by three address pins.

Analog Switches - Special Purpose Replacement Considerations

Public confirmed substitute part numbers are not available in the provided documentation.

Analog Switches - Special Purpose FAQ

How does the TS4100 handle input signals that exceed the supply voltage?

The device utilizes "Rail-to-Rail Plus" technology, allowing input/output voltages to exceed the supply rails up to 5.25 V while maintaining a flat on-resistance.

What is the impact of the charge pump on high-impedance circuits?

In circuits with input/output impedances in the megaohm range, charge pump refreshes can generate transient spikes. Placing a 500 pF capacitor to ground at the input or output suppresses these spikes.

What is the recommended power-up sequence for the digital I/O pins?

To prevent damage, the supply voltage should be applied first, followed by the voltage to the ADDA, ADDB, ADDC, and INH pins. If this sequence cannot be followed, a 500 kΩ resistor should be placed in series with the digital I/O pins.