CPC5601

R04

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5

2. Application

In the application circuits shown below, the CPC5601

is used to switch AC termination and gain. Loop-cur-

rent limit switching is optional.

Figure 3. CPC5601 Application Circuit Using the LITELINK II and the Optical Snoop Circuit

¹This design was tested and found to comply with FCC part 68 with this part.

Other compliance requirements may require a different part.

²Higher noise power supplies may require substitution of a 220

H inductor,

Toko 380HB-2215 or similar. See the power quality section of Clare applica-

tion note AN-146, Guidelines for Effective LITELINK Designs for more informa-

tion. Both application circuits use the same components for setting AC

termination and the telephone line current limit.

R77 499K 1%

501K

0.015

301

REFM

C3 0.1

II