am7945 Advanced Micro Devices, am7945 Datasheet - Page 10

• Manufacturer Part Number: am7945
• Description: Subscriber Line Interface Circuit
• Manufacturer: Advanced Micro Devices

SWITCHING WAVEFORMS
E1 to DET
Notes:
1. Unless otherwise noted, test conditions are V
2. a. Overload level is defined when THD = 1%.
3. Balance return signal is the signal generated at V
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
6. Tested with 0
7. Assumes the following Z
8. Group delay can be considerably reduced by using a Z
10
E0 to DET
Note:
All delays measured at 1.4 V level.
(900
R
b. Overload level is defined when THD = 1.5%
matches the programmed impedance.
other frequencies is guaranteed by characterization.
the group delay to less than 2 s. The effect of group delay on the linecard performance may be compensated for by using
the QSLAC™ or DSLAC™ device.
VTX
D
= 35.4 k , C
DET
E1
:
E1
E0
DET
90 k
CAS
source impedance. 2 M
tgkde
tshdd
= 0.33 F, no fuse resistors, BAT = –48 V, R
T
networks:
150 pF
90 k
tshd0
tshde
is specified for system design only.
RSN
CC
Am7945 Data Sheet
= +5 V, V
TX
by V
T
network such as that shown in Note 7 above. The network reduces
RX
EE
. This specification assumes the two-wire AC load impedance
= –5 V, C
L
= 900 , and R
(600
HP
VTX
tgkde
tgkdd
= 0.33 F, R
and an R
:
TMG
L
60 k
of 600
DC1
= 1700 .
= R
tgkd0
DC2
in production. Performance at
tshde
= 9.26 k , C
150 pF
60 k
DC
RSN
= 0.33 F,