am79m576a Advanced Micro Devices, am79m576a Datasheet - Page 7

• Manufacturer Part Number: am79m576a
• Description: Metering Subscriber Line Interface Circuit
• Manufacturer: Advanced Micro Devices

ELECTRICAL CHARACTERISTICS (continued)
Total Harmonic Distortion (2- to 4-Wire or 4- to 2-Wire) without Metering (See Test Circuits A and B)
0 dBm
+9 dBm
Total Harmonic Distortion
with metering
Idle Channel Noise without Metering
Psophometric weighted noise
Psophometric idle channel noise
with metering
Single Frequency Out-of-Band Noise (See Test Circuit E)
Metallic
Longitudinal
Line Characteristics (See Figures 1a, 1b, and 1c) BAT = 48 V, V
Apparent battery voltage
Loop current accuracy
Loop current, Tip Open state
Open Circuit state
Loop current limit accuracy
Loop current—Active state
Loop current—Active state
Battery = –48.0 V
Loop current—OHT
Battery = –47.0 V
Fault current limit, I
B shorted to GND in OHT state
Fault current limit, I
A and B shorted to GND in
Active state
Battery Current in Fault Condition
OHT state
Active state
Power Dissipation
On hook, Open Circuit state
On hook, OHT state
On hook, Active state
Off hook, OHT state
Off hook, Active state
(See Figure 2)
Description
L
L
LIM, A and
LIM,
300 Hz to 3.4 kHz
2-wire
4-wire
2-wire
4-wire
4 kHz to 9 kHz
9 kHz to 1 MHz
256 kHz and harmonics
1 kHz to 15 kHz
Above 15 kHz
256 kHz and harmonics
Active state
Active state
R
R
OHT state
I
R
R
R
R
R
A and B to GND
A and B to GND
R
R
R
L
L
L
L
L
L
L
L
L
L
L
= 13.5 mA, R
Test Condition (See Note 1)
= 600
= 0
= 2.25 k
= 1.96 k
= 0
= 2.25 k
= 0
= 600
= 600
= 220
L
= 0
SLIC Products
BAT
= –47.3 V, R
14.33
–7.5
17.5
9.35
Min
–15
47
41
L
= 600
Typ
–64
–55
–76
–76
–57
–70
–85
–57
140
190
350
750
900
50
56
40
and 900
1100
Max
+7.5
15.5
–50
–40
–35
–75
–80
–46
–52
+15
110
200
300
500
900
1.0
53
50
80
40
55
80
dBmp
dBm
Unit
mW
mA
mA
mA
dB
%
%
V
4, 7, 12
4, 7, 12
4, 5, 9
4, 5, 9
4, 5, 9
4, 5, 9
Note
4, 11
4, 5
4, 5
10
7
7