LUCL9215AAU-D AGERE [Agere Systems], LUCL9215AAU-D Datasheet - Page 29

• Manufacturer Part Number: LUCL9215AAU-D
• Description: Short-Loop Sine Wave Ringing SLIC
• Manufacturer: AGERE [Agere Systems]

September 2001
Agere Systems Inc.
Supervision
Power Ring
Sine Wave Input Signal and Sine Wave Power Ring Signal Output (continued)
It is recommended that the input level at RING
the edge or slightly clipping. This gives maximum power transfer with minimal distortion of the sine wave. The tip
side will saturate at a nominal 1 V above ground. The ring side will saturate at a nominal 3 V above battery. The
input circuit for a sine wave along with waveforms to illustrate the tip and ring saturation is shown in Figure 12.
The point at which clipping of the power ring signal begins at tip and ring is a function of the battery voltage, the
input capacitor at RING
onset of clipping are given below.
Table 21. Onset of Power Ringing Clipping V
Table 22. Onset of Power Ringing Clipping V
V
V
–70.15
–68.06
–66.00
–64.08
–62.04
–60.05
–70.12
–68.07
–66.06
–64.01
–62.00
–60.00
BAT1
BAT1
(V)
(V)
(continued)
71 V
(continued)
Input
Input
GND
V
BAT
IN
Vrms (mV)
, and the input signal at RING
Vrms (mV)
1 V
3 V
894
855
824
799
780
749
891
858
833
814
789
747
V
V
RING
TIP
Figure 12. RING
V
BAT
= –75 V
Vrms (V)
Vrms (V)
IN
CC
CC
47.15
45.11
43.38
41.95
40.79
39.09
46.88
45.11
43.69
42.57
41.21
39.11
be adjusted so that the power ring signal at tip and ring is just at
= 5 V, Cinput = 0.47 F
= 3.1 V, Cinput = 0.47 F
IN
PT
TR
and Vcc. Typical characteristic conditions showing the
L9215
IN
T/R
T/R
Operation
+1
–1
Short-Loop Sine Wave Ringing SLIC
52.74
52.65
52.29
52.19
52.76
Gain
52.62
52.58
52.45
52.30
52.36
Gain
52.23
52.5
27.5x
100 k
RING
IN
0.47 F
INPUT
12-3532.H(F)
29