Advance Information
AC Electrical Characteristics*
Characteristics
1
MH88615
Sym
V
R
F
R
Min
17
100
47
-0.25
-0.15
100
10
0
0
0.25
0.15
Typ
‡
38
68
Max
Units
Vrms
Hz
ms
kΩ
Test Comments
Superimposed on
V
Bat
= -48V. RV=1.5
Vrms
Ringing voltage
2
3
4
5
6
Ring Trip Detect Time
Input Impedance at VR
Output Impedance at Vx
Gain 2-wire to Vx
Frequency Response 2-wire to Vx
Ω
dB
dB
Relative to 1kHz
300Hz to 3.4 kHz
7
8
9
10
11
12
Gain Vr to 2-wire
Frequency Response Vr to 2-wire
Total Harmonic Distortion
Common Mode Rejection Ratio
Idle Channel Noise
Power Supply Rejection Ratio at 2-
Wire or VX
THD
CMRR
Nc
PSRR
-0.25
-0.15
0
0
0.25
0.15
0.5
dB
dB
%
dB
dBrnC
dB
Ripple 0.1V
1kHz @
VDD
Relative to 1kHz
300 Hz to 3.4 kHz
50
12
25
* Exceeding these values may cause permanent damage. Functional operation under these conditions is not implied.
‡ Typical figures are at 25°C and are for design aid only.
Note 1: All of the above test conditions use a test source impedance which matches the device’s impedance.
Note 2: THD is measured with “A Weight” filter.
AC Electrical Characteristics*- MH88615-1
Characteristics
1
2
Sym
REN
RL
Min
5
20
24
20
24
32
54
Typ
Max
Units
Test Comments
1 REN= 8000Ω
@ 25 Hz
Ringer Equivalence
Return Loss
dB
dB
dB
dB
200 Hz - 500 Hz
500 Hz - 2.5 kHz
2.5kHz - 3.4 kHz
300 Hz - 3.4 kHz
50 Hz - 300 Hz
300 Hz - 4 kHz
3
4
Transhybrid Loss
Longitudinal to
Metallic Balance
THL
dB
dB
* Exceeding these values may cause permanent damage. Functional operation under these conditions is not implied.
Note: Return Loss reference impedance are defined by variant type.
Transhybrid Loss is measured when terminated with network impedance.
AC Electrical Characteristics*- MH88615-3
Characteristics
1
2
3
4
Sym
REN
RL
THL
Min
4
20
20
52
Typ
Max
Units
Test Comments
4 REN= 2200Ω
@ 25 Hz
Ringer Equivalence
Return Loss
Transhybrid Loss
Longitudinal to
Metallic Balance
dB
dB
300 Hz - 3.4 kHz
300 Hz - 3.4 kHz
300 Hz - 3.4 kHz
dB
* Exceeding these values may cause permanent damage. Functional operation under these conditions is not implied.
Note: Return Loss reference impedance are defined by variant type.
Transhybrid Loss is measured when terminated with network impedance.
2-143
MITEL [ MITEL NETWORKS CORPORATION ]
