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參數(shù)資料
| 型號(hào)： | AM7945 |
| 廠商： | Advanced Micro Devices, Inc. |
| 英文描述： | Subscriber Line Interface Circuit |
| 中文描述： | 用戶線接口電路 |
| 文件頁(yè)數(shù)： | 10/18頁(yè) |
| 文件大?。?/td> | 157K |
| 代理商： | AM7945 |
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10
Am7945 Data Sheet
SWITCHING WAVEFORMS
Notes:
1. Unless otherwise noted, test conditions are V
CC
= +5 V, V
EE
=
–
5 V, C
HP
= 0.33
μ
F, R
DC1
= R
DC2
= 9.26
k
, C
DC
= 0.33
μ
F,
R
D
= 35.4
k
, C
CAS
= 0.33
μ
F, no fuse resistors, BAT
=
–
48 V, R
L
= 900
, and R
TMG
= 1700
.
2. a. Overload level is defined when THD = 1%.
b. Overload level is defined when THD = 1.5%
3. Balance return signal is the signal generated at V
TX
by V
RX
. This specification assumes the two-wire AC load impedance
matches the programmed impedance.
4. Not tested in production. This parameter is guaranteed by characterization or correlation to other tests.
5. This parameter is tested at 1 kHz with a termination impedance of 900
and an R
L
of 600
in production. Performance at
other frequencies is guaranteed by characterization.
6. Tested with 0
source impedance. 2 M
is specified for system design only.
7. Assumes the following Z
T
networks:
(900
)
:
8. Group delay can be considerably reduced by using a Z
T
network such as that shown in Note 7 above. The network reduces
the group delay to less than 2
μ
s. The effect of group delay on the linecard performance may be compensated for by using
the QSLAC
or DSLAC
device.
DET
tgkde
DET
tshdd
Note:
All delays measured at 1.4 V level.
E1
E1
E0
E1 to DET
E0 to DET
tshde
tgkde
tshde
tshd0
tgkdd
tgkd0
VTX
RSN
90 k
150 pF
90 k
VTX
RSN
60 k
150 pF
60 k
(600
)
:
相關(guān)PDF資料 |
PDF描述 |
|---|---|
| AM79489 | SUBSCRIBER LINE INTERFACE CIRCUIT |
| AM79489-1JC | SUBSCRIBER LINE INTERFACE CIRCUIT |
| AM79489-2JC | SUBSCRIBER LINE INTERFACE CIRCUIT |
| AM79489-3JC | SUBSCRIBER LINE INTERFACE CIRCUIT |
| AM79489-4JC | SUBSCRIBER LINE INTERFACE CIRCUIT |
相關(guān)代理商/技術(shù)參數(shù) |
參數(shù)描述 |
|---|---|
| AM7945JC | 制造商:未知廠家 制造商全稱:未知廠家 功能描述:Telecommunication IC |
| AM7946-1JC | 制造商:未知廠家 制造商全稱:未知廠家 功能描述:Subscriber Line Interface Circuit |
| AM7946-2JC | 制造商:未知廠家 制造商全稱:未知廠家 功能描述:Telecommunication IC |
| AM7946-3JC | 制造商:未知廠家 制造商全稱:未知廠家 功能描述:Subscriber Line Interface Circuit |
| AM7946-4JC | 制造商:未知廠家 制造商全稱:未知廠家 功能描述:Subscriber Line Interface Circuit |
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