參數(shù)資料
型號: AM79R79
廠商: Advanced Micro Devices, Inc.
英文描述: Ringing Subscriber Line Interface Circuit
中文描述: 振鈴用戶線接口電路
文件頁數(shù): 15/20頁
文件大小: 361K
代理商: AM79R79
SLIC Products
15
TEST CIRCUITS (continued)
V
CC
A(TIP)
B(RING)
DET
E1
6.2 k
R
L
= 600
15 pF
E. Loop-Detector Switching
A(TIP)
B(RING)
F. Ground-Key Switching
RG
D. Two-Wire Return Loss Test Circuit
R
R
Return loss =
20 log (2 V
M
/ V
S
)
Z
D
: The desired impedance;
e.g., the characteristic impedance of the line
V
M
Z
IN
V
S
A(TIP)
B(RING)
AGND
VTX
RSN
SLIC
R
T2
R
RX
C
T1
R
T1
Z
D
G. RFI Test Circuit
50
L
1
200
200
C
1
C
2
B
HF
GEN
VTX
A
SLIC
under test
L
2
C
AX
33 nF
C
BX
33 nF
RF
1
50
RF
2
50
1.5 Vrms
80% Amplitude
Modulated
100 kHz to 30 MHz
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