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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： | 6/30頁 |
| 文件大小： | 414K |
| 代理商： | L9217A |
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6
Agere Systems Inc.
Data Sheet
November 2001
with Reverse Battery and PPM
L9217A/G Low-Cost Line Interface
Functional Description
Table 2. Input State Coding
Table 3. Supervision Coding
B0
1
B1
1
B2
1
State/Definition
Powerup, Forward Battery, Normal Overhead.
Normal talk and battery feed state. Pin PT is
positive with respect to PR. On-hook transmission is enabled. PPM is not active. Overhead is un-
affected by resistor OVH and is adequate for 3.14 dBm overload into 900
.
Powerup, Reverse Battery, Normal Overhead.
Normal talk and battery feed state. Pin PT is
negative with respect to PR. On-hook transmission is enabled. PPM is not active. Overhead is un-
affected by resistor OVH and is adequate for 3.14 dBm overload into 900
.
Powerup, Forward Battery, High Overhead.
Normal talk and battery feed state. Pin PT is posi-
tive with respect to PR. On-hook transmission is enabled. PPM is not active. Overhead is in-
creased via resistor OVH.
Powerup, Reverse Battery, High Overhead.
Normal talk and battery feed state. Pin PT is neg-
ative with respect to PR. On-hook transmission is enabled. PPM is not active. Overhead is in-
creased via resistor OVH.
Low-Power Scan.
Except for off-hook detection, all circuits are shut down to conserve power. Pin
PT is positive with respect to pin PR. On-hook transmission is disabled.
Disconnect.
The tip and ring amplifiers are turned off, and the SLIC goes to a high-impedance
state (>100 k
). Supervision outputs read on hook. Device will power up in this state.
Powerup, Reverse Battery, High Overhead with PPM.
Normal talk and battery feed state. Pin
PT is negative with respect to PR. On-hook transmission is enabled. PPM is active. Overhead is
increased via resistor OVH.
Powerup, Forward Battery, High Overhead with PPM.
Normal talk and battery feed state. Pin
PT is positive with respect to PR. On-hook transmission is enabled. PPM is active. Overhead is
increased via resistor OVH.
1
0
1
1
1
0
1
0
0
0
1
1
0
0
1
0
0
0
0
1
0
NSTAT
0 = off-hook or ring trip.
1 = on-hook and no ring trip.
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相關代理商/技術參數 |
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|---|---|
| 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 |
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| 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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