iC-HD2

QUAD DIFFERENTIAL LINE DRIVER

Rev A6, Page 7/8

is usually below 1 amps. Therefore, typical 1 amps

of 30V, neither the suppressor diode TS nor the Zener

diode ZD should draw substantial current. Therefore,

their breakdown voltage should be chosen to be some

volts higher. A 36 V rated suppressor diode with 1.5kW

pulse power capability like a 1N6284 or 1.5KE36 the

minimum breakdown voltage measured at a test cur-

rent of 1 mA is stated as 32.4 V. Also, a zener diode

like a BZT03C36 rated for 36 V also shows a minimum

breakdown voltage of 32.4 V, but measured at test cur-

rent of 10 mA.

Figure 4: Using zener diode ZD to limit circuit supply voltage

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