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參數(shù)資料
| 型號： | MH88634K |
| 廠商： | Mitel Networks Corporation |
| 英文描述： | Central Office Interface Circuit Preliminary Information |
| 中文描述： | 中央辦公室接口電路的初步信息 |
| 文件頁數(shù)： | 5/8頁 |
| 文件大?。?/td> | 66K |
| 代理商： | MH88634K |
2-265
Preliminary Information
MH88634K
Loop Electrical Characteristics*
Characteristics
* Loop Electrical Characteristics are over recommended operating conditions unless otherwise stated.
Typical figures are at 25°C and are for design aid only.
AC Electrical Characteristics *
Characteristics
* AC Electrical Characteristics are over recommended operating conditions unless otherwise stated.
Typical figures are at 25°C and are for design aid only.
Symbol
Min
Typ
Max
Units
Test Conditions
1
2
3
Ringing Voltage
Ringing Frequency
Ringer Equivalence number
VR
40
16
0.5
90
20
1
130
33
2
V
rms
Hz
REN
Dummy Ringer is 17K
in series with 330nF.
Type A ringing
4
5
6
7
Operating Loop Current
Operating Loop Resistance
Off-Hook DC Resistance
Leakage Current
(Tip-Ring to AGND)
15
0
70
1800
275
10
mA
mA
@ 20mA, -42.5V
@ 20mA
@ 1000Vac
50 or 60 Hz
250
8
FL Threshold
Tip-Ring (On-hook)
Tip-ring Current (Off-Hook)
+30
12.5
+40
15
Vdc
mA
LRC = 0v
LRC = 5V
9
RL Threshold
Tip-Ring (On-Hook)
Tip-Ring current (Off-Hook)
-30
-12.5
-40
-15
Vdc
mA
LRC = 0v
LRC = 5V
10
SO Detect
-10.13
-12.4
mA
V
BAT
= -48V
Sym
Min
Typ
Max
Units
dB
Test Conditions
1
2
2-wire Input Impedance
Return Loss at 2-wire
(Z
in
= Ref = 600)
Longitudinal to Metallic
Balance
Z
in
RL
600
20
200-3400 Hz
3
58
58
53
20
dB
200Hz
1000Hz
3.4kHz
200-3400Hz
1024Hz
Spec Freq
4
5
6
Transhybrid Loss
Gain (voltage) 2 wire to Tx
Gain (Voltage)
Rx to 2 wire
Input impedance at Rx
Output impedance at Tx
Signal Overload Level
at 2-wire output
at Tx
10 Total Harmonic Distortion
at 2-wire
at Tx
11
Idle Channel Noise
at 2-Wire
at Tx
12 Power Supply Rejection Ratio
at 2-wire and Tx
THL
dB
d
Β
dB
-0.25
-2.25
0
-2
0.25
-1.75
7
8
9
10
k
5
4.0
0.95
dBm
Vrms
% THD < 5%
Ref 600
@ 20mA
THD
1.0
1.0
%
%
Input 0.5V, 1kHz @ Rx
Input 0.5V, 1kHz @ Tip-Ring
NC
13
13
dBrnc
dBrnc
V
DD
V
EE
PSRR
30
30
dB
dB
Ripple 0.1V, 1kHz
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