LUCL9216GRG Просмотр технического описания (PDF) - Agere -> LSI Corporation

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LUCL9216GRG

Short-Loop Ringing SLIC with Ground Start

Agere -> LSI Corporation 

Preliminary Data Sheet

September 2001

L9216A/G

Short-Loop Ringing SLIC with Ground Start

Supervision (continued)

Power Ring (continued)

Square Wave Input Signal and Trapezoidal Power Ring Signal Output (continued)

Figure 20 and Figure 21 provide some guidance to the relationship between crest factor, battery voltage, and R1

value.

1.36

1.35

1.34

1.33

1.32

1.31

1.3

1.29

1.28

1.27

1.26

58

60

62

64

66

68

70

72

BAT V

Figure 20. Crest Factor vs. Battery Voltage

12-3576F

1.5

1.45

1.4

1.35

1.3

1.25

10

10.5

11

11.5

12

12.5

13

13.5

14

R (kΩ)

Figure 21. Crest Factor vs. R (kΩ)

12-3577F

During nonring modes, the square wave input may be left on or removed from RINGIN. Via the state table, the ring

signal will be removed from tip and ring even if the low-voltage input is still present at RINGIN. However, removing

the waveform has certain advantages in terms of the timing of state. These advantages are detailed in the Switch-

ing Behavior of L9215/16 Ringing SLIC Application Note.

Agere Systems Inc.

31

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