MH88437-P
Advance Information
AC Electrical Characteristics † (continued)
‡
Characteristics
Sym
Min
Typ
Max Units
Test Conditions
10 Return Loss at 2-Wire
RL
Test circuit(Figure 9)
200-500Hz
500-2500Hz
(Reference 600Ω)
14
20
18
24
24
24
dB
dB
dB
2500-3400Hz
11 Longitudinal to Metallic Balance
Metallic to Longitudinal Balance
Nc
Test circuit (Figure 10)
300-1000Hz
1000-3400Hz
Test circuit (Figure 11)
200-1000Hz
1000-4000Hz
46
46
58
53
dB
dB
60
40
dB
dB
12 Idle Channel Noise
at 2-Wire
at VX
at 2-Wire
at VX
15
15
-65
-65
20
20
dBrnC Cmess filter
dBrnC
dBm
300-3400Hz filter
dBm
13 Transmit Gain (2-Wire to VX)
Off-Hook
Test circuit (Figure 7)
Input 0.5V @ 1kHz
-1
0
0
+1
dB
dB
On-Hook
LC = 0V
14 Frequency Response Gain
(relative to Gain @ 1kHz)
-0.5
-0.5
0
0
0.5
0.5
dB
dB
300Hz
3400Hz
15 Intermodulation Distortion
products at VX and 2W
IMD
75
dB
dB
dB
I
= 25-60mA
LOOP
F1 = 1kHz at -6dBm
F2 = 800Hz at -6dBm
Total signal power =
-3dBm
16 Distortion at VX due to near end
echo
75
I
= 25-60mA
LOOP
F1 = 1kHz at -6dBm
F2 = 800Hz at -6dBm
Total signal power =
-3dBm
(300Hz - 3400Hz bandwidth)
17 Common Mode Rejection at VX
18 Common Mode overload
CMR
CML
50
Test circuit (Figure 10)
1-100Hz Note 4
100V
V
Test circuit (Figure 10)
1-100Hz Note 4
pk-pk
† 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.
Variations from Standard AC Electrical Characteristics
(MH88437AD-PI/MH88437AS-PI) (-40˚C to 0˚C)
Characteristics
Sym
Min
Typ
Max
Units
Test Conditions
1
2
3
Receive Gain (VR to 2-Wire)
-1.1
dB
Test circuit (Figure 8)
Input 0.5V at 1kHz
Frequency Response Gain
(Relative to Gain @ 1kHz)
-1.2
dB
dB
I
= 16-60mA
LOOP
300Hz to 3400Hz
Transhybrid Loss
THL
-12
-15
300Hz to 1kHz
1kHz to 3400Hz
10
MITEL [ MITEL NETWORKS CORPORATION ]
