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參數(shù)資料
| 型號： | L7554 |
| 英文描述： | L7554 Low-Power SLIC |
| 中文描述： | L7554低功耗用戶接口 |
| 文件頁數(shù)： | 10/28頁 |
| 文件大?。?/td> | 486K |
| 代理商： | L7554 |
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10
Lucent Technologies Inc.
Data Sheet
March 1997
L7554 Low-Power SLIC
Electrical Characteristics
(continued)
Table 8. ac Feed Characteristics
1. Set by external components. Any complex impedance R
1
+ 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 of external components.
Parameter
Min
Typ
Max
Unit
ac Termination Impedance
1
150
—
1300
Longitudinal Impedance
2
—
40
46
Total Harmonic Distortion—200 Hz to 4 kHz
2
Off-hook
On-hook
—
—
—
—
0.3
1.0
%
%
Transmit Gain, f = 1 kHz (PT/PR to VITR)
Transmit Accuracy in dB, 25
°
C
Transmit Accuracy in dB, Full Temperature Range
—
–0.15
–0.22
–400
0
0
—
0.15
0.22
V/A
dB
dB
Receive + Gain, f = 1 kHz (RCVP to PT/PR)
Receive – Gain, f = 1 kHz (RCVN to PT/PR)
Receive Accuracy in dB, 25
°
C
Receive Accuracy in dB, Full Temperature Range
—
—
–0.18
–0.25
8.00
–8.00
0
0
—
—
0.18
0.25
–
–
dB
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
–1.00
–0.3
–0.5
—
0.0
0.0
–0.1
—
0.05
0.05
0.3
2.0
dB
dB
dB
dB
Gain vs. Level (transmit and receive)(reference 0 dBV
2
)
–50 dB to +3 dB
–0.05
0
0.05
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
20
26
24
29
—
—
dB
dB
—
—
—
–87
2
10
–77
12
20
dBmp
dBrnC
dBrn
Transmit Idle-channel Noise
Psophometric
C-message
3 kHz flat
—
—
—
–82
7
15
–77
12
20
dBmp
dBrnC
dBrn
Transhybrid Loss
3
200 Hz to 500 Hz
500 Hz to 3400 Hz
21
26
24
29
—
—
dB
dB
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