MH88634K 데이터 시트보기 (PDF) - Mitel Networks
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MH88634K Datasheet PDF : 8 Pages
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Preliminary Information
MH88634K
Loop Electrical Characteristics*
Characteristics
Symbol Min
Typ†
Max Units
Test Conditions
1 Ringing Voltage
2 Ringing Frequency
VR
40
90
130
Vrms
16
20
33
Hz
3 Ringer Equivalence number
REN
0.5
1
2
4 Operating Loop Current
15
70
mA
5 Operating Loop Resistance
0
1800
Ω
6 Off-Hook DC Resistance
250
275
Ω
7 Leakage Current
(Tip-Ring to AGND)
10
mA
8 FL Threshold
Tip-Ring (On-hook)
Tip-ring Current (Off-Hook)
+30
+40
Vdc
12.5
15
mA
9 RL Threshold
Tip-Ring (On-Hook)
Tip-Ring current (Off-Hook)
-30
-12.5
-40
Vdc
-15
mA
10 SO Detect
-10.13
-12.4 mA
* Loop Electrical Characteristics are over recommended operating conditions unless otherwise stated.
† Typical figures are at 25°C and are for design aid only.
Dummy Ringer is 17K
in series with 330nF.
Type A ringing
@ 20mA, -42.5V
@ 20mA
@ 1000Vac
50 or 60 Hz
LRC = 0v
LRC = 5V
LRC = 0v
LRC = 5V
VBAT = -48V
AC Electrical Characteristics *
Characteristics
Sym
1 2-wire Input Impedance
Zin
2 Return Loss at 2-wire
RL
(Zin = Ref = 600)
3 Longitudinal to Metallic
Balance
4 Transhybrid Loss
5 Gain (voltage) 2 wire to Tx
6 Gain (Voltage)
Rx to 2 wire
7 Input impedance at Rx
8 Output impedance at Tx
9 Signal Overload Level
at 2-wire output
at Tx
10 Total Harmonic Distortion
at 2-wire
at Tx
11 Idle Channel Noise
at 2-Wire
at Tx
12 Power Supply Rejection Ratio
at 2-wire and Tx
VDD
VEE
THL
THD
NC
PSRR
Min
20
58
58
53
20
-0.25
-2.25
10
4.0
0.95
Typ†
600
0
-2
5
30
30
Max
0.25
-1.75
1.0
1.0
13
13
Units
Ω
dB
Test Conditions
200-3400 Hz
dB 200Hz
1000Hz
3.4kHz
dB 200-3400Hz
dΒ 1024Hz
dB Spec Freq
kΩ
Ω
dBm
Vrms
% THD < 5%
Ref 600Ω @ 20mA
% Input 0.5V, 1kHz @ Rx
% Input 0.5V, 1kHz @ Tip-Ring
dBrnc
dBrnc
Ripple 0.1V, 1kHz
dB
dB
* AC Electrical Characteristics are over recommended operating conditions unless otherwise stated.
† Typical figures are at 25°C and are for design aid only.
2-265
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