參數(shù)資料
型號： AM79M576A
廠商： Advanced Micro Devices, Inc.
英文描述： Metering Subscriber Line Interface Circuit
中文描述： 計量用戶線接口電路
文件頁數(shù)： 6/18頁
文件大小： 252K
代理商： AM79M576A
6
Am79M576A Data Sheet
ELECTRICAL CHARACTERISTICS
Description
Test Conditions (See Note 1)
Min
Typ
Max
Unit
Note
Analog output (V
TX
) impedance
Analog (V
TX
) output offset
3
20
0
°
C to +25
°
C
+25
°
C to +85
°
C
–
40
°
C to 0
°
C
–
40
–
35
–
45
+40
+35
+45
20
35
+3.1
+5.5
mV
4
—
4
Analog (RSN) input impedance
Longitudinal impedance at A or B
300 Hz to 3.4 kHz
1
4
Overload level
4-wire
2-wire
Z
IN
= 600 to 900
–
3.1
–
5.5
Vpk
2
Transmission Performance, 2-Wire Impedance
2-wire return loss
(See Test Circuit D)
300 Hz to 500 Hz
500 Hz to 2.5 kHz
2.5 kHz to 3.4 kHz
OHT 300 Hz to 3.4 kHz
26
26
20
14
dB
4
Longitudinal Balance (2-Wire and 4-Wire, See Test Circuit C); R
L
= 600
Longitudinal to metallic L-T, L-4
300 Hz to 3.4 kHz
Longitudinal sum (L-T) + (T-L)
300 Hz to 3.4 kHz
300 Hz to 800 Hz
800 Hz to 3.4 kHz
Active state, 50 Hz to 200 Hz
OHT state, 50 Hz to 200 Hz
Dial pulse make or break
response time of DET
Insertion Loss (See Test Circuits A and B)
2- to 4-wire
V
AB
= 0 dBm, 1 kHz
48
95
40
35
17
8
dB
Longitudinal signal generation
4-L or T-L
Longitudinal current capability
per wire
mA
peak
4
3
ms
0
°
C to +70
°
C
–
40
°
C to +85
°
C
0
°
C to +70
°
C
–
40
°
C to +85
°
C
5.70
5.65
–
0.15
–
0.20
5.85
5.85
6.00
6.05
+0.15
+0.20
dB
—
4
—
4
4- to 2-wire
V
RX
= 0 dBm, 1 kHz
4- to 2-wire (In the presence of
2.2 Vrms metering)
Metering Signal Insertion Loss (See Test Circuit B)
4- to 2-wire
1.5
4
R
L
= 260, V
AB
= 2.86 Vrms
R
TMG
= 139.5 k
f = 12 kHz or 16 kHz
–
0.8
–
0.2
+0.4
dB
4
Insertion Loss vs. Frequency (See Test Circuits A and B)
2- to 4-wire or
4- to 2-wire
300 Hz to 3.4 kHz
Relative to 1 kHz
0
°
C to +70
°
C
–
40
°
C to +85
°
C
–
0.1
–
0.15
+0.1
+0.15
dB
—
4
Gain Tracking (See Test Circuits A and B)
2- to 4-wire or
4- to 2-wire
+7 dBm to
–
55 dBm
Reference: 0 dBm
0
°
C to +70
°
C
–
40
°
C to +85
°
C
–
0.1
–
0.15
+0.1
+0.15
dB
—
4
Balance Return Signal (4- to 4-Wire, See Test Circuit B)
Gain accuracy
0 dBm, 1 kHz
0
°
C to +70
°
C
–
40
°
C to +85
°
C
0
°
C to +70
°
C
–
40
°
C to +85
°
C
0
°
C to +70
°
C
–
40
°
C to +85
°
C
–
6.00
–
6.05
–
0.1
–
0.15
–
0.1
–
0.15
3.3
–
5.85
–
5.85
–
5.70
–
5.65
+0.1
+0.15
+0.1
+0.15
7.3
dB
—
4
3, 4
4
—
4
4
Variation with frequency relative
to 1 kHz
300 Hz to 3.4 kHz
Gain tracking
+3 dBm to
–
55 dBm
Reference:
–
4 dBm
f = 1 kHz
Group delay
5.3
μ
s
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