MH88435 Просмотр технического описания (PDF) - Mitel Networks
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MH88435 Datasheet PDF : 16 Pages
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MH88435-P
Preliminary Information
AC Electrical Characteristics †
Characteristics
Sym Min Typ‡ Max Units
Test Conditions
11 Longitudinal to Metallic Balance
Metallic to Longitudinal Balance
46
65
46
65
60
68
40
62
Test circuit as Fig. 10
dB 300-1000Hz
dB 1000-3400Hz
Test circuit as Fig.11
dB 200-1000Hz
dB 1000-4000Hz
12 Idle Channel Noise
Nc
at 2-Wire
at VX
at 2-Wire
at VX
10
20 dBrnC Cmess filter
10
20 dBrnC
-80
dBm 300-3400Hz filter
-80
dBm
13 Transmit Gain (2-Wire to VX)
(Terminated gain)
Off-Hook
Test circuit as Fig. 7
-1
0
+1
dB Input 0.5V @ 1kHz
(Voltage gain)
On-Hook
0
dB LC = 0V
14 Frequency Response Gain
(relative to Gain @ 1kHz)
-1
+0.3 +1
dB 300Hz
-1
+0.2 +1
dB 3400Hz
15 Intermodulation Distortion
IMD
60
dB ILOOP = 25-75mA
products at VX and 2W
F1 = 1kHz at -6dBm
F2 = 800Hz at -6dBm
Total signal power =
-3dBm
16 Distortion at VX due to near end
echo
(300Hz - 3400Hz bandwidth)
75
dB ILOOP = 25-75mA
F1 = 1kHz at -6dBm
F2 = 800Hz at -6dBm
Total signal power =
-3dBm
17 Common Mode Rejection on 2 wire CMRR
56
at VX
dB Test circuit as Fig. 10
1-100Hz. Note 4
18 Common Mode overload level
CMOL
7
Vrms Test circuit as Fig. 10.
Note 4
†Electrical Characteristics are over Recommended Operating Conditions unless otherwise stated.
‡Typical figures are at 25°C with nominal +5V and are for design aid only.
Note 1: All of the above test conditions use a test source impedance which matches the device’s impedance.
Note 2: dBm is referenced to 600Ω unless otherwise stated.
Note 3: These parameters need to be taken into consideration when designing or specifying the power supply.
Variations from Standard AC Electrical Characteristics
(MH88437AD-PI/MH88437AS-PI) (-40˚C to 0˚C)
Characteristics
Sym Min Typ
Max
1
Frequency Response Gain
-0.6
-0.65
Units
dB
Test Conditions
300Hz (-40˚C to 0˚C)
2-48
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