MH88422
AC Electrical Characteristics
†
- MH88422-1
Characteristics
1
Return Loss at 2-Wire
(220Ω + 820Ω //120nF)
Sym
RL
Preliminary Information
Min
20
20
20
40
55
53
Typ
‡
22
24
26
65
60
60
-79
-73
Max
Units
dB
dB
dB
dB
dB
dB
Test Conditions
Test circuit as Fig 7
300-500Hz
500-2500Hz
2500-3400Hz
Test circuit as Fig 8
50-300Hz
300-1000Hz
1000-4000Hz
2
Longitudinal to Metallic Balance
3
Idle Channel Noise
at 2-Wire
at VX
Nc
-72
-58
0.9
0.4
0.9
dBmp
dBmp
dB
dB
dB
Test circuit as Fig 5
Input 0.5V @ 1kHz
Off -Hook
300Hz
3400Hz
4
Transmit Gain (2-Wire to Vx)
-1.4
-0.4
-0.6
-0.5
5
Frequency Response Gain
(relative to Gain @ 1kHz)
-1.6
-2.1
† Electrical Characteristics are over Recommended Operating Conditions unless otherwise stated.
‡ Typical figures are at 25C 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.
AC Electrical Characteristics
†
- MH88422-2
Characteristics
1
Return Loss at 2-Wire
(Reference 600Ω)
Longitudinal to Metallic Balance
58
53
Metallic to Longitudinal Balance
60
40
3
Idle Channel Noise
at 2-Wire
at VX
4
Transmit Gain (2-Wire to Vx)
-1.4
5
Frequency Response Gain
(relative to Gain @ 1kHz)
-1.6
-2.1
-0.4
-1.3
-0.5
0.9
0.4
0.9
dB
dB
dB
Nc
13
13
20
20
dBrnC
dBrnC
Test circuit as Fig 5
Input 0.5V @ 1kHz
Off- Hook
200Hz
3400Hz
dB
dB
60
55
dB
dB
Sym
ERL
Min
20
14
Typ
‡
30
19
Max
Units
dB
dB
Test Conditions
Test circuit as Fig 7
500-2500Hz
200-3200Hz
Test circuit as Fig 8
200-1000Hz
1000-3000Hz
Test circuit as Fig 9
200-1000Hz
1000-4000Hz
SFRL
2
† Electrical Characteristics are over Recommended Operating Conditions unless otherwise stated.
‡ Typical figures are at 25C with nominal +5V supply 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.
2-20
MITEL [ MITEL NETWORKS CORPORATION ]
