LUCL9215AAU-D AGERE [Agere Systems], LUCL9215AAU-D Datasheet - Page 31

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

September 2001
Supervision
Power Ring
PWM Input Signal and Sine Wave Power Ring Sig-
nal Output (continued)
Modulation waveforms showing PWM are in Figure 14
below.
Agere Systems Inc.
A. Upper = Pwm Signal Centered at 10 kHz
Figure 14. Modulation Waveforms
Lower = Modulation Signal
B. Same as A but Expanded
(continued)
(continued)
12-3381(F)
12-3380(F)
5 V V
A PWM signal was generated with an HP
Function Generator modulated with a 20 Hz signal. The
optimal frequency used was 10 kHz. THE PWM signal
amplitude was 5.0 V (0 V to 5 V). This signal is shown
in Figure 15.
This input produced 44.96 Vrms ringing signal on
tip/ring under open loop conditions and 42.0 Vrms was
delivered to 5 REN load. The ringing output on ring,
with V
Notes:
The modulating 20 Hz signal THD was measured at 1.3 %.
The tip/ring 20 Hz signal THD was measured at 1 %.
V
PWM input 10 kHz, 5.0 Vp-p.
R
Figure 16. Ringing Output on RING, with V
BAT1
1
= 10 k , C
= –70.6 V, V
CC
CC
Figure 15. 5 V PWM Signal Amplitude
Short-Loop Sine Wave Ringing SLIC
Operation
= 5 V, is shown in Figure 16.
1
= 0.22 F, C
BAT2
= –26.5 V, V
2
= 0.47 F.
CC
= 5.019 V.
™
8116
CC
= 5 V
12-3575F
1660
31