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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)： | 3/48頁 |
| 文件大小： | 1062K |
| 代理商： | L9216A |
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Preliminary Data Sheet
September 2001
Short-Loop Ringing SLIC w/ Ground Start
L9216A/G
Agere Systems Inc.
3
Table of Contents
(continued)
Figures
Page
Figure 1. Architecture Diagram ...................................7
Figure 2. 28-Pin PLCC ...............................................8
Figure 3. 48-Pin MLCC................................................8
Figure 4. Basic Test Circuit ......................................20
Figure 5. Metallic PSRR ...........................................21
Figure 6. Longitudinal PSRR ....................................21
Figure 7. Longitudinal Balance .................................21
Figure 8. ac Gains ....................................................21
Figure 9. Ringing Waveform Crest Factor = 1.6 .......25
Figure 10. Ringing Waveform Crest Factor = 1.2 .....25
Figure 11. Ring Mode Typical Operation ..................26
Figure 12. RING
IN
Operation ....................................27
Figure 13. L9215/16 Ringing Input Circuit Selection
Table for Square Wave and PWM
Inputs .......................................................28
Figure 14. Modulation Waveforms ............................29
Figure 15. 5 V PWM Signal Amplitude .....................29
Figure 16. Ringing Output on RING, with
V
CC
= 5 V .................................................29
Figure 17. 3.3 V PWM Signal Amplitude ..................30
Figure 18. Ringing Output on RING, with
V
CC
= 3.1 V ..............................................30
Figure 19. Square Wave Input Signal and
Trapezoidal Power Ring Signal Output ...30
Figure 20. Crest Factor vs. Battery Voltage .............31
Figure 21. Crest Factor vs. R (k
) ...........................31
Figure 22. ac Equivalent Circuit ................................35
Figure 23. Agere T7504 First-Generation Codec
Resistive Termination ..............................35
Figure 24. Interface Circuit Using First-Generation
Codec (Blocking Capacitors Not
Shown) ....................................................38
Figure 25. ac Interface Using First-Generation Codec
(Including Blocking Capacitors) for
Complex Termination Impedance ...........40
Figure 26. Agere T7504 First-Generation Codec
Complex Termination ..............................40
Figure 27. Third-Generation Codec ac Interface
Network; Complex Termination ...............42
Tables
Page
Table 1. Pin Descriptions .......................................... 9
Table 2. Control States............................................. 10
Table 3. Supervision Coding ................................... 10
Table 4. Recommended Operating
Characteristics .......................................... 12
Table 5. Thermal Characteristics.............................. 12
Table 6. Environmental Characteristics.................... 13
Table 7. 5 V Supply Currents ................................... 13
Table 8. 5 V Powering .............................................. 13
Table 9. 3.3 V Supply Currents ............................... 14
Table 10. 3.3 V Powering ......................................... 14
Table 11. 2-Wire Port .............................................. 15
Table 12. Analog Pin Characteristics ..................... 16
Table 13. ac Feed Characteristics .......................... 17
Table 14. Logic Inputs and Outputs (V
CC
= 5 V) ..... 18
Table 15. Logic Inputs and Outputs (V
CC
= 3.3 V) .. 18
Table 16. Ground Start ............................................ 18
Table 17. Ringing Specifications ............................. 19
Table 18. Ring Trip .................................................. 19
Table 19. Typical Active Mode On- to Off-Hook
Tip/Ring Current-Limit Transient
Response ................................................ 23
Table 20. FB1 and FB2 Values vs. Typical Ramp
Time ......................................................... 24
Table 21. Onset of Power Ringing Clipping
V
CC
= 5 V, Cinput = 0.47
μ
F ................... 27
Table 22. Onset of Power Ringing Clipping
V
CC
= 3.1 V, Cinput = 0.47
μ
F ................ 27
Table 23. Signal and Component Selection Chart ... 28
Table 24. Parts List L9216; Agere T7504 First-
Generation Codec Resistive Termination;
Nonmeter Pulse Application ................... 36
Table 25. Parts List L9216; Agere T7504 First-
Generation Codec Complex Termination;
Meter Pulse Application ........................... 41
Table 26. Parts List L9216; Agere T8536
Third-Generation Codec ac and
dc Parameters; Fully Programmable ...... 43
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