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參數(shù)資料
| 型號： | L8551 |
| 廠商： | Lineage Power |
| 英文描述： | Low-Power SLIC(低功耗用戶線接口（SLIC）) |
| 中文描述： | 低功耗用戶接口（低功耗用戶線接口電路（SLIC）） |
| 文件頁數(shù)： | 1/32頁 |
| 文件大小： | 526K |
| 代理商： | L8551 |
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Data Sheet
March 1997
L8551 Low-Power SLIC
Features
I
Low active power (typical 135 mW during on-hook
transmission)
I
Low-power scan mode for low-power on-hook
power dissipation (80 mW typical)
I
Supports meter pulse injection
I
Spare op amp for complex termination synthesiza-
tion or meter pulse filtering
I
–24 V to –60 V power supply operation
I
Distortion-free on-hook transmission
I
Convenient operating states:
— Forward powerup
— Low-power scan
— Disconnect (high impedance)
— 2-wire wink (zero loop voltage)
I
Adjustable supervision functions:
— Off-hook detector with longitudinal rejection
— Ground key detector
— Ring trip detector
I
Independent, adjustable, dc and ac parameters:
— dc feed resistance
— Loop current limit
— Termination impedance
I
Thermal protection
Description
This electronic subscriber loop interface circuit
(SLIC) is optimized for low power consumption in
both the on-hook idle state and the off-hook active
state, while providing an extensive set of features.
The L8551 includes a summing node for meter pulse
injection to 2.2 Vrms. A spare, uncommitted op amp
is included for meter pulse filtering.
To minimize on-hook power dissipation, the L8551
SLIC offers a low-power scan mode, wherein all cir-
cuitry except the off-hook supervision is shut down to
conserve power.
This part is functionally equivalent to the L7551. The
ac interface footprint is identical but the actual exter-
nal component values will differ slightly. Also, resistor
R
G
used to set the transconductance in the L8551 is
not used in the L7551.
The device is available in a 32-pin PLCC and a
44-pin PLCC package. It is built by using a 90 V
complementary bipolar (CBIC) process.
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相關(guān)代理商/技術(shù)參數(shù) |
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| L8560AAU | 制造商:Alcatel-Lucent 功能描述: 制造商:LUCENT 功能描述: |
| L8561 | 制造商:UTC-IC 制造商全稱:UTC-IC 功能描述:The UTC L8561 is a Power Factor Corrector, which can work in wide input voltage range applications (from 85V ~ 265V) with an excellent THD. |
| L8561_11 | 制造商:UTC-IC 制造商全稱:UTC-IC 功能描述:POWER FACTOR CORRECTOR |
| L8561G-D08-T | 制造商:UTC-IC 制造商全稱:UTC-IC 功能描述:POWER FACTOR CORRECTOR |
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