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參數資料
| 型號： | L8567 |
| 英文描述： | SLIC for Peoples Republic of China Applications |
| 中文描述： | 為人民共和國的中國用戶接口的應用 |
| 文件頁數： | 22/42頁 |
| 文件大小： | 701K |
| 代理商： | L8567 |
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22
Lucent Technologies Inc.
Data Sheet
August 1999
People’s Republic of China Applications
L8567 SLIC for
Chip Set Performance Specifications
When using the T7507 codec, L8567 SLIC, L7583
solid-state switch, and 50
protection resistors, the
following line card requirements are achieved; specified
termination impedance is shown in Figure 15.
5-5324.a
Figure 15. Termination Impedance
Gain
* –3.5 or –7.0 gain mode programmable via the T7507 serial data
interface.
Gain Flatness—In Band
Gain Flatness—Out of Band—High
Frequencies
The transmit and receive directions’ frequency-depen-
dent loss relative to gain at 3400 Hz is shown below.
This specification is met by using the T7507 codec,
L8567 SLIC, L7583 solid-state switch, and 50
pro-
tection resistors (200
+ 680
|| 0.1
μ
F termination).
5-5340
Figure 16. Transmit and Receive Direction
Frequency-Dependent Loss Relative to
Gain at 3400 Hz
The loss for frequencies 3400 Hz < f < 4600 Hz is given
by:
f
–
)
1200
b = 12.5
Gain Flatness—Out of Band—Low
Frequencies
Table 14. Gain Flatness—Out of Band—Low
Frequencies
Transmit direction only, loss relative to 1020 Hz. This
specification is met by using the T7507 codec, L8567
SLIC, L7583 solid-state switch, and 50
protection
resistors (200
+ 680
|| 0.1
μ
F termination).
Table 12. Gain
Gain @
1020 Hz
Transmit
Receive*
Receive*
Min
Typ
Max
Unit
–0.7
–4.2
–7.7
0
+0.3
–3.2
–6.7
dB
dB
dB
–3.5
–7.0
Table 13. Gain Flatness—In Band
The in-band frequency-dependent loss relative to gain
at frequency = 1020 Hz, for the transmit and receive
directions. This specification is met by using the T7507
codec, L8567 SLIC, L7583 solid-state switch, and 50
protection resistors (200
+ 6800
|| 0.1
μ
F termina-
tion).
Frequency (Hz)
300—400
400—600
600—2400
2400—3000
3000—3400
Min
–0.3
–0.3
–0.3
–0.3
–0.3
Max
1.00
0.75
0.35
0.55
1.50
Unit
dB
dB
dB
dB
dB
680
0.1
μ
F
200
Frequency (Hz)
16.67
40
50
60
Min Loss (dB)
30
26
30
30
0
–5
10
12.5
20
25
30
L
3400
4000
4600
5000
ACCEPTABLE
REGION
FREQUENCY (Hz)
1
--- 4000
sin
–
dB
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