1. Performance indicators: When purchasing an analog switch, you must carefully look at its performance indicators. In general, most of them use integrated MOS transistors as switch devices to realize corresponding switching functions. The physical characteristics of the MOS tube itself, so everyone should pay attention to the corresponding performance indicators when purchasing, and only in this way can the ones purchased in this way be relatively high-quality.
2. Switching speed: The switching speed of the analog switch is also the speed that everyone must pay attention to when purchasing. In general, the switching speed can reach megahertz, so that the purpose of fast link switching can be achieved.
3. Switch withstand voltage: because the signal link of the analog switch is the low-voltage working environment of the board, under normal circumstances, the switch withstand voltage value is within 15v, and the most common ones are 3v, 5v, 12v, 15, etc. Voltage value, so that you must pay attention to the maximum voltage of the signal chain and the maximum withstand voltage of the device when selecting.
4. The maximum current of the switch: The conduction of the analog switch can withstand the maximum current value. Now the maximum current of the more common analog switch is within a few hundred milliamps, so there are relatively few analog switches at the ampere level.
5. On-resistance: The on-resistance of common analog switches ranges from a few ohms to 100 ohms; this parameter must be paid attention to when using analog switches in the design of analog signals and weak signals, so that they can be used in achieve better results in the process.
6. Choose a big brand: There are many brands of multi-way selector switches around us, but you still have to choose a brand with strong comprehensive strength when purchasing, so that you can achieve a more ideal effect after using it, making the power consumption become more secure and reliable.
