MH88524 Просмотр технического описания (PDF) - Mitel Networks
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MH88524 Datasheet PDF : 10 Pages
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MH88524
Preliminary Information
AC Electrical Characteristics ‡
Characteristics
Sym
1 Return Loss at junctorx
(Ref. = 604Ω)
2 Impedance at Junctor
3 Transhybrid Lossy
(Junctor - 754Ω)
4 Transhybrid Loss z
(Frequency = 1kHz)
5 Transhybrid Loss
(Frequency = 50kHz)
6 Input Impedance at RX
7 Output Impedance at TX
8 Gain RX to Junctor
ARJ
9 Frequency Response Gain
(relative to gain at 1kHz)
Min Typ* Max Units
Test Conditions
46
40
604
42
36
18
21
15
18
dB 200-3400Hz
dB 200-50kHz
Ω
dB 200-3400Hz
dB 200-50kHz
dB Junctor = 600Ω
dB Junctor = 900Ω
dB Junctor = 600Ω
dB Junctor = 900Ω
10k
5
0.99 1.00 1.01
-0.1 0.0 0.1
-0.1
0.1
-0.1
1.0
Ω
Ω
V/V Input 0.5V 1kHz
dBV
dB 200-3400Hz
dB 200-50kHz
10 Gain junctor to TX
AJT 0.99 1.00 1.01 V/V Input 0.5V 1kHz
-0.1
0
0.1 dBV
11 Frequency Response Gain
relative to gain at 1kHz
-0.1
0.1
dB 200-3400Hz
-0.1
0.1
dB 200Hz-50kHz
12 Signal Output Overload Level
at TX
6.0
at Junctor
6.0
dBm
dBm
%THD<5%
Reference: 600Ω
Reference: 754Ω
13 Total Harmonic Distortion
RX to Junctor
Junctor to TX
RX to Junctor
Junctor to TX
THD
Input 0.5V 1kHz
0.4
% 200-3400Hz
0.4
% 200-3400Hz
1.0
% 200-50kHz
1.0
% 200-50kHz
14 Idle Channel Noise
Nc
at TX
at Junctor
2 dBrnC Reference: 600Ω
2 dBrnC Reference 754Ω
15 Power Supply Rejection Ratio PSRR
Ripple 0.1V 1kHz
at TX and Junctor
VDD
40
dB
VEE
40
dB
* Typical figure are at 25°C with nominal +5V supplies and are for design aid only.
‡ AC Electrical Characteristics are over recommended operating conditions unless otherwise stated.
Both of the 2-4 Wire circuits are tested. TX, RX and Junctor actually refer to TX1, RX1 and JUN1; and TX2, RX2 and JUN2.
All of the above test conditions use 754Ω connected between Junctor and AGND, unless otherwise stated.
All the above test conditions use 200Hz to 3400Hz unless otherwise stated.
Notes:
x RX is connected to AGND, see Figure 3.
y See Figure 5.
z See Figure 4.
2-76
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