MH88435-P データシートの表示（PDF） - Mitel Networks
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MH88435-P Datasheet PDF : 16 Pages
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Preliminary Information
MH88435-P
Variations from Standard Loop Electrical Characteristics -
(MH88435AD-PI/MH88435AS-PI)
Characteristics
Sym Min Typ
Max
1 Ringing Voltage Threshold
VR
17
2 Operating Loop Current
22
80
Units
Vrms
mA
Test Conditions
-40˚C to 0˚C
-40˚C to 0˚C
+70˚C to +85˚C
DC Electrical Characteristics †
Characteristics
Sym Min Typ‡ Max Units
Test Conditions
1
Supply Current
ICC
7
mA VCC = 5.0V, On-hook
2 RV,
LCD
Low Level Output Voltage VOL
High Level Output Voltage VOH 2.4
0.4
V IOL = 4mA
V IOH = 0.4mA
3 LC
Low Level Input Voltage
VIL
0.8
V
High Level Input Voltage
VIH 2.0
V
Low Level Input Current
IIL
0
10
µA VIL = 0.0V
High Level Input Current
IIH
350 400 µA VIH = 5.0V
† 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.
AC Electrical Characteristics †
Characteristics
Sym Min Typ‡ Max Units
Test Conditions
1 Input Impedance
VR-
VR+
2 Output Impedance at VX
3 Receive Gain (VR to 2-Wire)
4 Frequency Response Gain
(relative to Gain @ 1kHz)
5 Signal Output Overload Level
at 2-Wire
at VX
6 Signal/Noise & Distortion
SINAD
at 2-Wire
at VX
7 Power Supply Rejection Ratio
PSRR
at 2-Wire
at VX
8 Transhybrid Loss
THL
9 2-Wire Input Impedance
Zin
10 Return Loss at 2-Wire
RL
(Reference 600Ω)
47k
94k
10
-1
0
1
-0.5 +0.4 +0.5
-0.5
0 +0.5
0
0
70
70
25
40
25
40
16
25
Note 3
14
20
20
24
18
24
Ω
Ω
Ω
dB
dB
dB
dBm
dBm
dB
dB
dB
dB
dB
Ω
dB
dB
dB
Test circuit as Fig. 8
Input 0.5V at 1kHz
300Hz
3400Hz
THD < 5% @ 1kHz
ILOOP = 25-75mA
Input 0.5V at 1kHz
ILOOP = 25-75mA
300-3400Hz
Ripple 0.1Vrms 1kHz
on VCC
Test circuit as Fig.8
300-3400Hz at VR
@1kHz
Test circuit as Fig. 9
200-500Hz
500-2500Hz
2500-3400Hz
2-47
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