MH88422(1995) Ver la hoja de datos (PDF) - Mitel Networks
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MH88422 Datasheet PDF : 12 Pages
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Preliminary Information
MH88422
DC Electrical Characteristics†
Characteristics
Sym Min Typ‡ Max
1
Supply Current
2
Power Consumption
IDD
3
PC
15
3
Low Level Output Voltage
VOL
0.4
RVLC High Level Output Voltage
VOH 2.4
4 LC
Low Level Input Voltage
VIL
0.8
5
High Level Input Voltage
Low Level Input Current
VIH
2.0
IIH
60
High Level Input Current
IIL
60
† 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.
Units
Test Conditions
mA VDD = -5.0V, Idle state
mW VDD = -5.0V, Idle state
V IOL = 4mA
V IOH = 0.4mA
V
V
µΑ VIH = 5.0V
µA VIL = 0.0V
AC Electrical Characteristics† - MH88422 All Variants
Characteristics
Sym Min Typ‡ Max
1 Input Impedance VR
47k
2 Output Impedance at VX
10
3 Receive Gain (VR to 2-wire)
3.5
Units
Ω
Ω
dB
Test Conditions
Input 0.5V at 1kHz
4 Frequency Response Gain
(relative to Gain @ 1kHz)
5 Signal Output Overload Level
at 2-Wire
0
0
+2.0 +3.0
dB 300 Hz
dB 3400 Hz
dBm
THD <5% @ 1kHz
ILoop =15 to 40mA
VDD=4.5V to 5.5V
at VX
+2.0 +3.0
dBm
6 Total Harmonic Distortion
THD
at 2-wire
1.2
at VX
1.2
7 Power Supply Reject Ratio
PSRR
at 2-wire
30
at VX
30
Input -10dB at 1kHz
% DC loop = 25mA
% VDD=5.0V
Ripple 0.1V,1kHz on
dB VDD
dB
8 Transhybrid Loss
THL
20
dB Input -3.5dBm, 1kHz at
VR
† 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.
2-25
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