MH88422 Просмотр технического описания (PDF) - Mitel Networks
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MH88422 Datasheet PDF : 14 Pages
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Preliminary Information
MH88422
Absolute Maximum Ratings* - All voltages are with respect to AGND unless otherwise specified.
Parameter
Symbol
Min
Max
1 DC Supply Voltage
VDD
-0.3
6
2 Storage Temperature
TS
-55
+125
3 DC Loop Voltage
VBAT
-110
+110
4 Ringing Voltage
- 2 variant
- all other variants
VR
-
150
VR
-2
120
5 Loop Current
ILoop
-
90
*Exceeding these values may cause permanent damage. Functional operation under these conditions is not implied.
.
Units
V
˚C
V
Vrms
Vrms
mA
Recommended Operating Conditions
Parameter
Sym Min Typ‡ Max
1 DC Supply Voltages
VDD 4.75 5.0 5.25
2 Operating Temperatures
TOP
0
25 70
3 Ringing Voltage
VR
75 90
‡ Typical figures are at 25˚C with nominal +5V supply and are for design aid only
Units
Test Conditions
V
˚C
Vrms 150 Vrms for -2 variant
Loop Electrical Characteristics †
Characteristics
Sym Min Typ‡ Max Units
Test Conditions
1 Ringing Voltage
VR
-1 Variant Only No Detect
Detect
35
Externally Adjustable -
17 Vrms See MSAN-154
Vrms
BD-1 Variant Only No Detect
Detect
32
15 Vrms
Vrms
All other Variants No Detect
Detect
14
2 Ringing Frequency
BD-1 Variant Only
23
All other Variants
15
3 Operating Loop Current
BD-1 Variant Only
20
All other Variants
15
4 Off-Hook DC Voltage
-1 Variant
6.0
-2 Variant
2.4
3.1
-3 Variant
6.0
BD-1 Variant
6.0
6.0
7 Vrms
Vrms
28
Hz
68
Hz
80
80
28.8
6.0
6.0
7.8
9.0
14.0
10.8
27
mA
mA
Test circuit as Fig 4
V ILoop=19mA (See Note 1)
V
ILoop=60mA
V
ILoop=15mA
V ILoop=20mA (See Note 2)
V
ILoop=26mA
V ILoop=15mA (See Note 3)
V
ILoop=90mA
V ILoop=20mA (See Note 4)
V
ILoop=50mA
2-17
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