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| 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)： | 7/20頁 |
| 文件大?。?/td> | 361K |
| 代理商： | AM79R79 |
SLIC Products
7
ELECTRICAL CHARACTERISTICS
Note:
* Performance Grade
Description
Test Conditions (See Note 1)
Min
Typ
Max
Unit
Note
Transmission Performance
2-wire return loss
Z
VTX
, analog output impedance
V
VTX
, analog output offset voltage
200 Hz to 3.4 kHz (Test Circuit D)
26
dB
1, 4, 6
4
3
20
+35
+40
20
0
°
C to +70
°
C
–
40
°
C to +85
°
C
–
35
–
40
mV
4
Z
RSN
, analog input impedance
Overload level, 2-wire and 4-wire,
off hook
Overload level, 2-wire
THD (Total Harmonic Distortion)
THD, on hook, OHT state
1
Active state
2.5
Vpk
2a
On hook, R
LAC
= 600
+3 dBm, BAT2 =
–
24 V
0 dBm, R
LAC
= 600
BAT1 =
–
75 V
0.88
Vrms
2b
–
64
–
50
–
40
dB
5
Longitudinal Performance (See Test Circuit C)
Longitudinal to metallic
L-T, L-4 balance
200 Hz to 1 kHz
normal polarity
reverse polarity
normal polarity,
–
40
°
C to +85
°
C
1 kHz to 3.4 kHz
normal polarity
reverse polarity
normal polarity,
–
40
°
C to +85
°
C
200 Hz to 800 Hz normal polarity
Active or OHT state
0 to 100 Hz, T
A
= +25
°
C
–
1,
–
3*
–
2,
–
4
52
63
54
dB
–
2
–
2,
–
4
–
1,
–
3*
–
2,
–
4
58
52
58
54
4
–
2
–
2,
–
4
54
42
12
4
Longitudinal signal generation 4-L
Longitudinal current per pin (A or B)
Longitudinal impedance at A or B
Idle Channel Noise
C-message weighted noise
28
25
mArms
/pin
4
0
°
C to +70
°
C
–
40
°
C to +85
°
C
0
°
C to +70
°
C
–
40
°
C to +85
°
C
+7
+11
+12
–
79
–
78
dBrnC
4
Psophometric weighted noise
–
83
dBmp
Insertion Loss and Four- to Four-Wire Balance Return Signal (See Test Circuits A and B)
Gain accuracy
4- to 2-wire
0 dBm, 1 kHz
Gain accuracy
2- to 4-wire and
0 dBm, 1 kHz
4- to 4-wire
Gain accuracy
4- to 2-wire
OHT state, on hook
Gain accuracy
2- to 4-wire and
4- to 4-wire
Gain accuracy over frequency
300 to 3400 Hz
relative to 1 kHz
Gain tracking
+3 dBm to
–
55 dBm 0
°
C to +70
°
C
relative to 0 dBm
–
40
°
C to +85
°
C
Gain tracking
0 dBm to
–
37 dBm
OHT state, on hook
+3 dBm to 0 dBm
Group delay
0 dBm, 1 kHz
–
0.20
–
6.22
0
+0.20
–
5.82
dB
3
–
6.02
–
0.35
–
6.37
0
+0.35
–
5.77
OHT state, on hook
–
6.02
0
°
C to +70
°
C
–
40
°
C to +85
°
C
–
0.10
–
0.15
–
0.10
–
0.15
–
0.10
–
0.15
–
0.35
+0.10
+0.15
+0.10
+0.15
+0.10
+0.15
+0.35
3, 4
0
°
C to +70
°
C
–
40
°
C to +85
°
C
3
3
μs
1, 4, 6
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