determined based on the tradeoff between the amount of

noise suppression that may be needed and minimizing the

additional current drawn by the resistor (25mA for a 100

Ω

resistor and a 5V supply).

ESD PROTECTION

As stated in the Absolute Maximum Ratings, the LM4929

has a maximum ESD susceptibility rating of 2000V. For

higher ESD voltages, the addition of a PCDN042 dual transil

(from California Micro Devices), as shown in Figure 3, will

provide additional protection.

201324B4

FIGURE 3. The PCDN042 provides additional ESD protection beyond the 2000V shown in the

Absolute Maximum Ratings for the V

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