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CPC5604

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Table of Contents

Table 1 - Performance Specifications ........................................................................................................................3

Table 1 - Performance Specifications (Continued) ....................................................................................................4

Table 2 - Package Pinout ..........................................................................................................................................5

Applications ................................................................................................................................................................6

North American Reference Design Schematic ....................................................................................................6

Table 3 - North American Reference Design Bill of Materials....................................................................................7

International Reference Design Schematic................................................................................................................8

Table 4 - International Reference Design Bill of Materials ........................................................................................9

CTR-21 Reference Design Schematic ....................................................................................................................10

Table 5 - Reference Design Schematic Bill of Materials ..........................................................................................11

CTR-21 with Exceptions Reference Design Schematic ..........................................................................................12

Table 6 - CTR-21 with Exceptions Reference Design Bill of Materials ..................................................................13

Introduction ..............................................................................................................................................................14

Ring Detection via Snoop Circuit ........................................................................................................................14

Caller ID (CID) Detection via Snoop Circuit ......................................................................................................14

Hook Switch Control ..........................................................................................................................................14

Transmit Signal ..................................................................................................................................................14

Receive Signal Path ................................................................................................................................................15

Transmit Signal Path ................................................................................................................................................15

Ring Signal Detection ..............................................................................................................................................16

Figure 3 - Caller ID Protocol ....................................................................................................................................17

DC Charcteristics......................................................................................................................................................17

Figure 4 - Outlook DC Resistance Tip/Ring Setup ..................................................................................................18

On-Hook Resistance ................................................................................................................................................18

Current Limiting ........................................................................................................................................................18

CTR-21 Compliance ................................................................................................................................................18

AC Characteristics ....................................................................................................................................................18

Differential and Single Ended Mode ........................................................................................................................19

Receive and Transmit Frequency Response ..........................................................................................................19

Figure 4C - Transmit Frequency Response Setup ..................................................................................................20

Figure 4D - Transmit Frequency Response Tx±......................................................................................................20

Distortion ..................................................................................................................................................................21

Figure 5C - Transmit Distortion Text Tx± to Tip/Ring Setup ....................................................................................22

Figure 5D - Transmit Distortion on Tip/Ring ............................................................................................................22

Trans-Hybrid Loss ....................................................................................................................................................23