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參數(shù)資料
| 型號： | L9216A |
| 英文描述： | CAP CER 270PF 3.15KVDC R3 RAD |
| 中文描述： | 短環(huán)振鈴用戶接口與地面開始 |
| 文件頁數(shù)： | 28/48頁 |
| 文件大小： | 1062K |
| 代理商： | L9216A |
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Preliminary Data Sheet
September 2001
Short-Loop Ringing SLIC with Ground Start
L9216A/G
28
Agere Systems Inc.
Supervision
(continued)
Power Ring
(continued)
Sine Wave Input Signal and Sine Wave Power Ring Signal Output
(continued)
During nonring modes, the sinusoidal ringing waveform may be left on at RING
IN
. Via the state table, the ring signal
will be removed from tip and ring even if the low- voltage input is still present at RING
IN
. There are certain timing
considerations that should be made with respect to state changes which are detailed in the Switching Behavior of
L9215/6 Ringing SLIC Application Note.
PWM Input Signal and Sine Wave Power Ring Signal Output
A pulse-width modulated (PWM) signal may be used to provide the ringing input to RING
IN
. The signal is applied
through a low-pass filter and ac-coupled into RING
IN
as shown in Figure 13 below. This approach gives a sine
wave output at tip and ring.
12-3578bF
Figure 13. L9215/16 Ringing Input Circuit Selection Table for Square Wave and PWM Inputs
Table 23. Signal and Component Selection Chart
V
BAT
70 V
70 V
70 V
70 V
70 V
70 V
85 V
85 V
85 V
85 V
85 V
85 V
V
CC
5 V
3 V
5 V
3 V
5 V
3 V
5 V
3 V
5 V
3 V
5 V
3 V
Input
R1
C1
1
μ
F
1
μ
F
0.22
μ
F
0.22
μ
F
0.1
μ
F
0.1
μ
F
1
μ
F
1
μ
F
0.22
μ
F
0.22
μ
F
0.1
μ
F
0.1
μ
F
C2
CF
1.3
1.3
sine
sine
sine
sine
1.3
1.3
sine
sine
sine
sine
Typical 5 REN Ringing Voltage RMS
48 V
49 V
42 V
42 V
42 V
42 V
59 V
51 V
51 V
47 V
51 V
49 V
5 V Square
3 V Square
10 kHz PWM 5 V
10 kHz PWM 3 V
90 kHz PWM 5 V
90 kHz PWM 3 V
5 V Square
3 V Square
10 kHz PWM 5 V
10 kHz PWM 3 V
90 kHz PWM 5 V
90 kHz PWM 3 V
12 k
7 k
10 k
10 k
7 k
7 k
10 k
7 k
10 k
4 k
4 k
4 k
0.47
μ
F
0.47
μ
F
0.47
μ
F
0.47
μ
F
0.47
μ
F
0.47
μ
F
0.47
μ
F
0.47
μ
F
0.47
μ
F
0.47
μ
F
0.47
μ
F
0.47
μ
F
INPUT
R
1
C
1
C
2
RING
IN
L9215/16
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