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(guān)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(guān)(帶電池開關(guān)的低功耗用戶環(huán)路接口電路電路(SLIC))
文件頁數(shù): 10/28頁
文件大?。?/td> 753K
代理商: L7556
10
Lucent Technologies Inc.
Data Sheet
January 2000
with Battery Switch
L7556, L7557 Low-Power SLICs
Electrical Characteristics
(continued)
Table 8. ac Feed Characteristics
1. Set by external components. Any complex impedance R1 + R2 || C between 150
and 1300
can be synthesized.
2. This parameter is not tested in production. It is guaranteed by design and device characterization.
3. Return loss and transhybrid loss are functions of device gain accuracies and the external hybrid circuit. Guaranteed performance assumes
1% tolerance external components.
Parameter
Min
150
Typ
40
Max
1300
46
Unit
ac Termination Impedance
1
:
Longitudinal Impedance
2
(See Figure 8.)
Total Harmonic Distortion—200 Hz to 4 kHz
2
:
Off-hook
On-hook
Transmit Gain, f = 1 kHz (PT/PR to VITR)
Transmit Accuracy in dB
Receive + Gain, f = 1 kHz (RCVP to PT/PR)
Receive – Gain, f = 1 kHz (RCVN to PT/PR)
Receive Accuracy in dB
Gain vs. Frequency (transmit and receive) (600
termination; reference 1 kHz
2
):
200 Hz to 300 Hz
300 Hz to 3.4 kHz
3.4 kHz to 16 kHz
16 kHz to 266 kHz
Gain vs. Level (transmit and receive)(reference 0 dBV
2
):
–50 dB to +3 dB
Return Loss
3
:
200 Hz to 500 Hz
500 Hz to 3400 Hz
2-wire Idle-channel Noise (600
termination):
Psophometric
C-message
3 kHz Flat
Transmit Idle-channel Noise:
Psophometric
C-message
3 kHz flat
Transhybrid Loss
3
:
200 Hz to 500 Hz
500 Hz to 3400 Hz
0.3
1.0
–128
0.18
8.16
–8.16
0.18
%
%
V/A
dB
dB
–122
–0.18
7.84
–7.84
–0.18
–125
0
8.00
–8.00
0
–1.00
–0.3
–3.0
0.0
0.0
–0.1
0.05
0.05
0.3
2.0
dB
dB
dB
dB
–0.05
0
0.05
dB
20
26
24
29
dB
dB
–87
2
10
–77
12
20
dBmp
dBrnC
dBrn
–82
7
15
–77
12
20
dBmp
dBrnC
dBrn
21
26
24
29
dB
dB
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