am79m574 ETC-unknow, am79m574 Datasheet - Page 16

• Manufacturer Part Number: am79m574
• Description: Metering Subscriber Line Interface Circuit
• Manufacturer: ETC-unknow

TEST CIRCUITS (continued)
16
56 Ω
R
G. Ground-Key Switching
G
= 2 kΩ
68 Ω
68 Ω
E. Single-Frequency Noise
C
C
A(TIP)
B(RING)
I
DC
A(TIP)
B(RING)
SLIC
Am79M574 Data Sheet
1/ωC << 90 Ω
R
L
= 600 Ω
H. Loop-Detector Switching
S
M
A(TIP)
B(RING)
S
V
E
Current Feed and Ground Key
CC
F. Ground-Key Detection
R
R
R
L
L
G
6.2 kΩ
DET
E0
E1
A(TIP)
B(RING)
15 pF