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參數資料
| 型號： | L9217A |
| 英文描述： | CAP CER 2700PF 3.15KVDC R3 RAD |
| 中文描述： | 低成本線接口，具有反向電池和PPM |
| 文件頁數： | 2/30頁 |
| 文件大小： | 414K |
| 代理商： | L9217A |
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2
Agere Systems Inc.
Data Sheet
November 2001
with Reverse Battery and PPM
L9217A/G Low-Cost Line Interface
Features ......................................................................1
Description...................................................................1
Pin Information ............................................................4
Functional Description.................................................6
Absolute Maximum Ratings (at TA = 25
°
C)................7
Recommended Operating Conditions .........................7
Electrical Characteristics.............................................8
Ring Trip Requirements..........................................12
Test Configurations ...................................................13
Applications...............................................................15
dc Applications........................................................19
Battery Feed.........................................................19
Overhead Voltage ................................................19
Rate of Battery Reversal......................................20
Loop Range..........................................................20
Off-Hook Detection...............................................20
Ring Trip Detection...............................................21
Longitudinal Balance...............................................21
Periodic Pulse Metering (PPM)...............................22
ac Design................................................................23
Codec Types........................................................23
ac Interface Network ............................................23
Receive Interface .................................................23
Example 1: Real Termination (First-
Generation Codec)...............................................24
Example 2: Complex Termination (First-
Generation Codec)...............................................26
Power Derating.......................................................28
Pin-for-Pin Compatibility with L9218/L9219............28
PCB Layout Information ............................................28
Outline Diagram.........................................................29
28-Pin PLCC...........................................................29
Ordering Information..................................................30
Figures
Page
Figure 1.
Figure 2.
Figure 3.
Figure 4.
Figure 5.
Figure 6.
Figure 7.
Figure 8.
Figure 9.
Figure 10. ac Gains..................................................14
Figure 11. Basic Loop Start Application
Circuit Using T7504-Type Codec............15
Figure 12. Basic Loop Start Application
Circuit Using T8536-Type Codec............17
Functional Diagram...................................3
28-Pin PLCC.............................................4
Ring Trip Circuits....................................12
L9217 Basic Test Circuit.........................13
Metallic PSRR.........................................13
Longitudinal PSRR .................................13
Longitudinal Balance ..............................14
RFI Rejection..........................................14
Longitudinal Impedance..........................14
Figure 13. Loop Current vs. Loop Voltage.............. 19
Figure 14. Off-Hook Detection Circuit..................... 20
Figure 15. Ring Trip Equivalent Circuit
and Equivalent Application .................... 21
Figure 16. ac Equivalent Circuit.............................. 24
Figure 17. Interface Circuit Using First-
Generation Codec (±5 V Codec) ........... 27
Figure 18. Interface Circuit Using First-
Generation Codec (5 V Only Codec)..... 27
Tables
Page
Table 1.
Table 2.
Table 3.
Table 4.
Table 5.
Table 6.
Table 7.
Table 8.
Table 9.
Table 10.
Pin Descriptions ..................................... 4
Input State Coding .................................. 6
Supervision Coding ................................. 6
Power Supply .......................................... 8
2-Wire Port .............................................. 9
Analog Pin Characteristics .................... 10
PPM ...................................................... 10
ac Feed Characteristics ........................ 11
Logic Inputs and Outputs ...................... 12
Parts List for Loop Start Application
Circuit Using T7504-Type Codec .......... 16
900 W Termination, 850 W + 50 nF
Hybrid First-Generation Codec Design
Parameters ........................................... 17
Parts List for Loop Start Application
Circuit Using T8536-Type Codec .......... 18
FB1/FB2 Values vs. Typical Ramp
Time ...................................................... 20
Table 11.
Table 12.
Table 13.
Table of Contents
Contents
Page
Figures
Page
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相關代理商/技術參數 |
參數描述 |
|---|---|
| L9218A | 制造商:AGERE 制造商全稱:AGERE 功能描述:Low-Cost Line Interface |
| L9219A | 制造商:AGERE 制造商全稱:AGERE 功能描述:Low-Cost Line Interface with Reverse Battery and Dual Current Limit |
| L9222 | 功能描述:功率驅動器IC Quad Inv Tran Switch RoHS:否 制造商:Micrel 產品:MOSFET Gate Drivers 類型:Low Cost High or Low Side MOSFET Driver 上升時間: 下降時間: 電源電壓-最大:30 V 電源電壓-最小:2.75 V 電源電流: 最大功率耗散: 最大工作溫度:+ 85 C 安裝風格:SMD/SMT 封裝 / 箱體:SOIC-8 封裝:Tube |
| L9222_04 | 制造商:STMICROELECTRONICS 制造商全稱:STMicroelectronics 功能描述:QUAD INVERTING TRANSISTOR SWITCH |
| L9222D | 功能描述:功率驅動器IC Quad Inv Tran Switch RoHS:否 制造商:Micrel 產品:MOSFET Gate Drivers 類型:Low Cost High or Low Side MOSFET Driver 上升時間: 下降時間: 電源電壓-最大:30 V 電源電壓-最小:2.75 V 電源電流: 最大功率耗散: 最大工作溫度:+ 85 C 安裝風格:SMD/SMT 封裝 / 箱體:SOIC-8 封裝:Tube |
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