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