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參數資料
| 型號： | L9215A |
| 英文描述： | CAP CER 2200PF 3.15KVDC R3 RAD |
| 中文描述： | 短回路正弦波振鈴用戶接口 |
| 文件頁數： | 3/50頁 |
| 文件大小： | 1115K |
| 代理商： | L9215A |
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Data Sheet
September 2001
Short-Loop Sine Wave Ringing SLIC
L9215A/G
Agere Systems Inc.
3
Table of Contents
(continued)
Figures
Page
Figure 1. Architecture Diagram ...................................7
Figure 2. 32-Pin PLCC Diagram .................................8
Figure 3. 48-Pin MLCC Diagram.................................8
Figure 4. Basic Test Circuit ......................................22
Figure 5. Metallic PSRR ...........................................23
Figure 6. Longitudinal PSRR ....................................23
Figure 7. Longitudinal Balance .................................23
Figure 8. ac Gains ....................................................23
Figure 9. Ringing Waveform Crest Factor = 1.6 .......27
Figure 10. Ringing Waveform Crest Factor = 1.2 .....27
Figure 11. Ring Mode Typical Operation...................28
Figure 12. RING
IN
Operation ....................................29
Figure 13. L9215/16 Ringing Input Circuit Selection
Table for Square Wave and PWM
Inputs........................................................30
Figure 14. Modulation Waveforms ............................31
Figure 15. 5 V PWM Signal Amplitude ......................31
Figure 16. Ringing Output on RING, with
Vcc = 5 V..................................................31
Figure 17. 3.3 V PWM Signal Amplitude ...................32
Figure 18. Ringing Output on RING, with
Vcc = 3.1 V...............................................32
Figure 19. Square Wave Input Signal and Trapezoidal
Power Ring Signal Output........................32
Figure 20. Crest Factor vs. Battery Voltage...............33
Figure 21. Crest Factor vs. R (k
) ............................33
Figure 22. ac Equivalent Circuit ................................36
Figure 23. Agere T7504 First-Generation Codec
Resistive Termination; Nonmeter Pulse
Application................................................37
Figure 24. Interface Circuit Using First-Generation
Codec (Blocking Capacitors
Not Shown) ..............................................40
Figure 25. ac Interface Using First-Generation
Codec (Including Blocking Capacitors)
for Complex Termination Impedance ......42
Figure 26. Agere T7504 First-Generation Codec
Complex Termination; Meter Pulse
Application................................................43
Figure 27. Third-Generation Codec ac Interface
Network; Complex Termination ...............45
Tables
Page
Table 1. Pin Descriptions ........................................... 9
Table 2. Control States ............................................ 11
Table 3. Supervision Coding .................................... 11
Table 4. Recommended Operating
Characteristics ........................................... 14
Table 5. Thermal Characteristics.............................. 14
Table 6. Environmental Characteristics.................... 15
Table 7. 5 V Supply Currents ................................... 15
Table 8. 5 V Powering .............................................. 15
Table 9. 3.3 V Supply Currents................................. 16
Table 10. 3.3 V Powering ......................................... 16
Table 11. 2-Wire Port .............................................. 17
Table 12. Analog Pin Characteristics ...................... 18
Table 13. ac Feed Characteristics ........................... 19
Table 14. Logic Inputs and Outputs (V
CC
= 5 V) ...... 20
Table 15. Logic Inputs and Outputs (V
CC
= 3.3 V) ... 20
Table 16. Ringing Specifications ............................. 21
Table 17. Ring Trip .................................................. 21
Table 18. PPM ......................................................... 21
Table 19. Typical Active Mode On- to Off-Hook
Tip/Ring Current-Limit Transient
Response ................................................ 25
Table 20. FB1 and FB2 Values vs. Typical
Ramp Time .............................................. 26
Table 21. Onset of Power Ringing Clipping
V
CC
= 5 V, Cinput = 0.47
μ
F .................... 29
Table 22. Onset of Power Ringing Clipping
V
CC
= 3.1 V, Cinput = 0.47
μ
F ................. 29
Table 23. Signal and Component Selection Chart ... 30
Table 24. Parts List L9215; Agere T7504
First-Generation Codec Resistive Termina-
tion; Nonmeter Pulse Application ............ 38
Table 25. Parts List L9215; Agere T7504
First-Generation Codec Complex Termina-
tion; Meter Pulse Application ................... 44
Table 26. Parts List L9215; Agere T8536
Third-Generation Codec Meter Pulse
Application ac and dc Parameters;
Fully Programmable ................................ 46
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