MH88435-P
Preliminary Information
AC Electrical Characteristics †
Characteristics
‡
Sym
Min
Typ
Max
Units
Test Conditions
11 Longitudinal to Metallic Balance
Test circuit as Fig. 10
300-1000Hz
1000-3400Hz
46
46
65
65
dB
dB
Metallic to Longitudinal Balance
Test circuit as Fig.11
200-1000Hz
1000-4000Hz
60
40
68
62
dB
dB
12 Idle Channel Noise
Nc
at 2-Wire
10
10
-80
-80
20
20
dBrnC Cmess filter
dBrnC
at VX
at 2-Wire
at VX
dBm
dBm
300-3400Hz filter
13 Transmit Gain (2-Wire to VX)
Test circuit as Fig. 7
Input 0.5V @ 1kHz
(Terminated gain)
Off-Hook
-1
0
0
+1
dB
dB
(Voltage gain)
On-Hook
LC = 0V
14 Frequency Response Gain
(relative to Gain @ 1kHz)
-1
-1
+0.3
+0.2
+1
+1
dB
dB
300Hz
3400Hz
IMD
15 Intermodulation Distortion
products at VX and 2W
60
dB
dB
dB
I
= 25-75mA
LOOP
F1 = 1kHz at -6dBm
F2 = 800Hz at -6dBm
Total signal power =
-3dBm
16 Distortion at VX due to near end
echo
75
I
= 25-75mA
LOOP
F1 = 1kHz at -6dBm
F2 = 800Hz at -6dBm
Total signal power =
-3dBm
(300Hz - 3400Hz bandwidth)
CMRR
CMOL
17 Common Mode Rejection on 2 wire
at VX
56
7
Test circuit as Fig. 10
1-100Hz. Note 4
18 Common Mode overload level
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
Units
Test Conditions
1
Frequency Response Gain
-0.6
dB
300Hz (-40˚C to 0˚C)
-0.65
2-48
MITEL [ MITEL NETWORKS CORPORATION ]
