Datasheet > 80-0276-F

80-0276-F

更新时间： 2022-12-16 17:50:07

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80-0276-F 数据手册

System Level ESD Mitigation

Design Note

Vdd

RSC4000/4128

100K

1N4148

R2* 10K

SW1

-RESET

USER_RESET

D2*

1N4148

* Add for ESD protection

Figure 2 – Reset ESD protection

5. (Desirable) Put 100 ohm series resistors on output pins if they travel to the outside or travel long distances

(with the exception of PWM pins). If adding 100 ohm series resistance causes the signal to slow or degrade

unacceptably, decrease the resistance or use an optoisolator or some other higher speed ESD protection

instead.

6. (Desirable) Put a 0.1uF capacitor across the supply pins on the board (not to be confused with decoupling

capacitors, which should be as close to IC's as possible.)

7. (Desirable) Put clamp diodes (such as1N4148) PWM as shown in Figure 2:

Vdd

1N4148

LS1

PWM0

PWM1

SPEAKER

1N4148

Figure 3 - PWM ESD Protection

8. (Desirable) Put a clamp diode (such as1N4148) reverse biased across any power supply.

9. (Desirable) Put a high-frequency 1 kV capacitor between each power pin and chassis ground close to the

electronics.

10. (Desirable) If a battery enclosure is used, put a 0.1uF capacitor across the supply as close to the battery

connection as possible.

P/N 80-0276-F

123 4 5

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