le79489 Zarlink Semiconductor, le79489 Datasheet - Page 14
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le79489
Manufacturer Part Number
le79489
Description
Subscriber Line Interface Circuit
Manufacturer
Zarlink Semiconductor
Datasheet
1.LE79489.pdf
(18 pages)
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TEST CIRCUITS (continued)
Z
D
1.5 Vrms
80% Amplitude
Modulated
100 kHz to 30 MHz
is the specified nominal input impedance.
GEN
HF
V
S
50 Ω
R
R
L
L
1
2
D. Two-Wire Return Loss Test Circuit
V
Return loss = –20 log (2 V
M
Z
D
Zarlink Semiconductor Inc.
E. RFI Test Circuit
Z
IN
200 Ω
200 Ω
A(TIP)
B(RING)
14
SLIC
AGND
VTX
RSN
C
C
M
1
2
/ V
S
)
50 Ω
50 Ω
RF
RF
R
2
R
1
T1
T2
R
RX
CAX
33 nF
CBX
33 nF
C
SLIC Under Test
A
B
T1
VTX