AC Test Circuit

Figure 3 shows a typical test circuit for evaluation of the LM2422. This circuit is designed to allow testing of the LM2422 in a 50

Ω

environment without the use of an expensive FET probe. The two 4990

Ω resistors form a 400:1 divider with the 50Ω resistor and

the oscilloscope. A test point is included for easy use of an oscilloscope probe. The compensation capacitor is used to

compensate the network to achieve flat frequency response.

20138203

Note: 10 pF load includes parasitic capacitance.

FIGURE 3. Test Circuit (One Channel)

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