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參數(shù)資料
| 型號： | L7556 |
| 廠商： | Lineage Power |
| 英文描述： | Low-Power SLICs （electronic subscriber loop interface circuits ）with Battery Switch(帶電池開關的低功耗用戶環(huán)路接口電路（SLIC）) |
| 中文描述： | 低功耗SLIC組件（電子用戶環(huán)路接口電路）與電池開關（帶電池開關的低功耗用戶環(huán)路接口電路電路（SLIC）） |
| 文件頁數(shù)： | 7/28頁 |
| 文件大小： | 753K |
| 代理商： | L7556 |
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Lucent Technologies Inc.
7
Data Sheet
January 2000
with Battery Switch
L7556, L7557 Low-Power SLICs
Recommended Operating Conditions
Electrical Characteristics
Minimum and maximum values are testing requirements. Typical values are characteristic of the device and are
the result of engineering evaluations. Typical values are for information purposes only and are not part of the test-
ing requirements. Minimum and maximum values apply across the entire temperature range (–40 °C to +85 °C)
and the entire battery range unless otherwise specified. Typical is defined as 25 °C, V
CC
= 5.0 V, V
BAT1
= –48 V,
V
BAT2
= –48 V, and I
LIM
= 40 mA. Positive currents flow into the device. Test circuit is Figure 4 unless noted.
Table 4. Power Supply
1. This parameter is not tested in production. It is guaranteed by design and device characterization.
Parameter
Min
–40
4.75
–24
–16
—
5
—
150
Typ
—
5.0
–48
–28
10
22
1
600
Max
85
5.25
–60
V
BAT1
I
LIM
45
2.2
1300
Unit
°C
V
V
V
mA
mA
Vrms
Ambient Temperature
V
CC
Supply Voltage
V
BAT1
Supply Voltage
V
BAT2
Supply Voltage
Loop Closure Threshold-detection Programming Range
dc Loop Current-limit Programming Range
On- and Off-hook 2-wire Signal Level
ac Termination Impedance Programming Range
Parameter
Min
Typ
Max
Unit
Power Supply—Powerup, No Loop Current:
I
CC
I
BAT
(V
BAT
= –48 V)
Power Dissipation (V
BAT
= –48 V)
Power Supply Rejection 500 Hz to 3 kHz (See Figures 5, 6, 15, and 16.)
1
:
V
CC
V
BAT
Thermal Protection Shutdown (T
jc
)
Thermal Resistance, Junction to Ambient (
θ
JA
)
—
—
—
2.8
–2.3
125
—
—
155
mA
mA
mW
35
45
—
—
—
—
dB
dB
—
—
175
60
—
—
°C
°C/W
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