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參數(shù)資料
| 型號： | AM79R70 |
| 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)： | 7/17頁 |
| 文件大?。?/td> | 271K |
| 代理商： | AM79R70 |
P R E L I M I N A R Y
SLIC Products
7
ELECTRICAL CHARACTERISTICS
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
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
200 Hz to 3.4 kHz (Test Circuit D)
26
dB
mV
Vpk
Vrms
1, 4, 6
4
3
20
+50
20
–50
1
4
Active state
On hook, R
LAC
= 600
+3 dBm, BAT2 = –24 V
0 dBm, R
LAC
= 600
,
BAT1 = –67 V
2.5
0.88
2a
2b
–64
–50
–40
dB
5
Longitudinal Performance (See Test Circuit C)
Longitudinal to metallic L-T, L-4 balance
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
Psophometric weighted noise
Insertion Loss and Four- to Four-Wire Balance Return Signal (See Test Circuits A and B)
Gain accuracy4- to 2-wire
0 dBm, 1 kHz
Gain accuracy2- to 4-wire and
4- to 4-wire
Gain accuracy4- to 2-wire
OHT state, on hook
Gain accuracy2- 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
relative to 0 dBm
Gain tracking
OHT state, on hook
+3 dBm to 0 dBm
Group delay
0 dBm, 1 kHz
200 Hz to 3.4 kHz
200 Hz to 800 Hz, Normal polarity
Active or OHT state
0 to 100 Hz, T
A
= +25°C
40
40
12
dB
28
25
mArms
/pin
4
+7
–83
+14
–76
dBrnC
dBmp
4
–0.20
–6.22
0
+0.20
–5.82
dB
3
0 dBm, 1 kHz
–6.02
–0.35
–6.37
0
+0.35
–5.77
OHT state, on hook
–6.02
–0.10
+0.10
–0.10
+0.10
3, 4
0 dBm to –37 dBm
–0.10
–0.35
+0.10
+0.35
3, 4
3
1, 4, 6
3
μs
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