MH89626C Ver la hoja de datos (PDF) - Mitel Networks
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MH89626C Datasheet PDF : 12 Pages
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MH89626C
Preliminary Information
Loop Electrical Characteristics*
Characteristics
Sym Min Typ† Max Units
Test Comments
1 Maximum AC Ringing
33
Current Rejection
mA 25Hz, VBat = -48V
2 Ring Trip Detect Time y
100 125
ms
3 Hook Switch Detect Time:
Off-Hook to On-Hook
On-Hook to Off-Hook
20
ms
20
ms
4 Operating Loop Current
5 Operating Loop Resistance
6 Loop Current at Off-Hook z
Detect Threshold
IIP
18
22
50
mA LCA = Adjustable
RIP
0
0
1900
2300
Ω
VBat = -39.8V
Ω
VBat = -48V
Ish
7
10
13
mA
* Loop 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.
x The SLIC can be loaded with an AC impedance as low as 4000Ω without generating a false SHK output. Since each REN represents
8kΩ, the SLIC can drive a REN of 2 without generating a false SHK output.
y This parameter is over Recommended Operating Conditions as well as the specified Operating Loop Resistance.
z Off-Hook Detect (SHK) will be detected for loop lengths of 2900Ω or less.
AC Electrical Characteristics*
Characteristics
Sym Min Typ† Max Units
Test Comments
1 2- Wire input
Zin
(200Ω + 560Ω // 0.1µF) −2
720
Ω
Variant
(200Ω + 680Ω // 0.1µF) −4
813
Ω
Variant
2 Return Loss at 2-Wire
14
51
dB
18
40
dB
14
32
dB
3 Longitudinal to Metallic Balance
40
65
dB
46
65
dB
4 Transhybrid Loss
16
36
dB
20
24
dB
16
24
dB
5 Power Supply Rejection Ratio
PSRR
at 2-wire and Do:
VDD
20
40
dB
VEE
20
30
dB
VBat
20
40
dB
* AC 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.
1020 Hz
1020 Hz
300 Hz
500-2000 Hz
3400 Hz
300-600 Hz
600-3400 Hz
300 Hz
500-2500 Hz
3400 Hz
Ripple 50mV
1020 Hz
2-290
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