MH88632B 데이터 시트보기 (PDF) - Mitel Networks
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MH88632B Datasheet PDF : 17 Pages
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MH88632B
Preliminary Information
Loop Electrical Characteristics†
Characteristics
Sym Min Typ‡ Max Units
1 Ringing Voltage
2 Ringing Frequency
VR
20
90 130 Vrms
17 20 68
Hz
4 Operating Loop Current
15
90
mA
5 Off-Hook DC Resistance
190 275 290
Ω
6 Leakage Current
(Tip-Ring to AGND)
7 mArms
7 FL Threshold
Tip-Ring Voltage Detect (On-hook)
Tip-Ring Current Detect (Off-hook)
12
21
V
6
12
mA
8 RL Threshold
Tip-Ring Voltage Detect (On-hook)
Tip-Ring Current Detect (Off-hook)
-12
-21
V
-6
-12
mA
9 TG and RG Detect Threshold
-12
-14
V
¦Electrical Characteristics are over recommended operating conditions unless otherwise stated.
‡Typical figures are at 25°C with nominal 5V supplies and are for design aid only.
Test Conditions
@1000VAC
LRC = 0V
LRC = 5V
LRC = 0V
LRC = 5V
AC Electrical Characteristics†
Characteristics
1 2-wire Input Impedance
2 Return Loss at 2-Wire
(Zin = 600Ω)
Note 1
Sym
Zin
RL
3 Return Loss at 2-Wire
RL
(Zin = 900Ω)
4 Longitudinal to Metallic Balance
Note 2
5 Metallic to Longitudinal Balance
Note 2
6 Transhybrid Loss
(Zin = Net = 600Ω)
THL
Note 2 & 3
7 Transhybrid Loss
(Zin = Net = 900Ω)
THL
Note 2 & 3
8 Transhybrid Loss
THL
(Zin =600Ω, Net = AT&T) Note 2 & 3
9 Input Impedance At RX
10 Output Impedance at TX
11 Transmit Gain, (2-Wire/TX):
Default Gain(0dB)
Programmable Range
Min Typ‡ Max Units Test Conditions
600
Ω
900
Ω
Ext.
Ω
20 40
26 48
20 46
Test Circuit Fig. 6
dB 200-500 Hz
dB 500-1000 Hz
dB 1000-3400 Hz
22
dB 200-500 Hz
26
dB 500-1000 Hz
24
dB 1000-3400 Hz
58 64
58 63
55 61
53 57
51 54
Test Circuit Fig. 8
dB 200 Hz
dB 1000 Hz
dB 2000 Hz
dB 3000 Hz
dB 4000 Hz
60 62
40 62
Test Circuit Fig. 7
dB 200-1000 Hz
dB 1000 -4000 Hz
18 25
21 33
dB 200-3400 Hz
dB 500-2500 Hz
18
dB 200-3400 Hz
21
dB 500 -2500 Hz
18
21 30
dB 200-3400 Hz
dB 500-2500 Hz
10
kΩ
5
Ω
Test Circuit Fig. 5
-0.2
0.2 dB Input 0.5V
-12
0
6
dB 1000Hz
1000Hz
2-248
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