Preliminary Information
DC Electrical Characteristics
†
Characteristics
1
2
3
4
5
RVLC
SHK
MH88400
Sym
I
DD
PC
V
OL
V
OH
V
IL
V
IH
I
IH
I
IL
3.8
0.9
3.5
0.6
1
Min
Typ
‡
15
75
0.4
Max
Units
mA
mW
V
V
V
V
mΑ
µA
Test Conditions
V
DD
= 5.0V, I
Loop
=
40mA
V
DD
= -5.0V,I
Loop
=
40mA
I
OL
= 1.0mA
I
OH
= 1.0mA
Supply Current
Power Consumption
Low Level Output Voltage
High level Output Voltage
Low Level Input Voltage
High level Input Voltage
High Level Input Current
Low Level Input Current
V
IH
= 5.0V
V
IL
= 0.0V
† DC 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.
Note: See figure 3a and 3b.
AC Electrical Characteristics
†
- MH88400 All Variants
Characteristics
1
2
3
4
5
6
7
Input Impedance VR
Output Impedance at VX
Transmit Gain (2-Wire to VX)
-0.4
Frequency Response Gain
(relative to Gain @ 1kHz)
Receive Gain (VR to 2-wire)
3.5
Frequency Response Gain
(relative to Gain @ 1kHz)
Signal Output Overload Level
-3.0
0.0
+2.0
-3.0
0.0
+2.0
THD
at 2-wire
at VX
9
Power Supply Reject Ratio
at 2-wire
at VX
PSRR
35
10
dB
dB
0.9
1.2
%
%
dBm
dBm
dBm
dBm
dBm
dBm
0
0
dB
dB
-2.4
-3.0
dB
dB
Sym
Min
Typ
‡
47
5
Max
Units
kΩ
Ω
dB
Input 0.5V at 1kHz off-
hook
300 Hz
3400 Hz
Test Conditions
dB
Input 0.5V at 1kHz
300 Hz
3400 Hz
THD <5% @ 1kHz
I
Loop
=10-40mA
V
DD
=4.5V
V
DD
=5.0V
V
DD
=5.5V
V
DD
=4.5V
V
DD
=5.0V
V
DD
=5.5V
Input 0.5V at 1kHz
DC loop = 1000Ω
V
DD
=5.0V
Ripple 0.1V,1kHz on
V
DD
at 2-Wire
at Vx
8
Total Harmonic Distortion
† AC Electrical Characteristics are over Recommended Operating Conditions unless otherwise stated.
‡ Typical figures are at 25°C and are for design aid only.
Note 1: All of the above characteristics use a test circuit as per Figure 3.
Note 2: All of the above test conditions use a test source impedance which matches the device’s impedance.
Note 3: dBm is referenced to 600Ω unless otherwise stated.
Note 4: THD is measured with a “Weight” filter.
2-15
MITEL [ MITEL NETWORKS CORPORATION ]
