MH89625C
AC Electrical Characteristics
†
- Transmit (A/D) Path
Characteristics
1
2
3
Absolute Gain
Default (Codec 0dB)
Gain Programmable Range
x
Loss Distortion with Frequency
(relative to level at 1020Hz
with codec at 0dB)
Sym
Min
-0.5
0
0.0
-0.3
-0.3
-0.3
-0.3
-0.3
-0.3
-0.25
-0.25
-0.5
-1.5
3.14
3.14
Typ
‡
0
Max
0.5
7
-
-
1.0
0.75
0.35
0.55
1.5
0.25
0.25
0.5
1.5
Preliminary Information
Units
dB
dB
dB
dB
dB
dB
dB
dB
dB
dB
dB
dB
dB
dBm
dBm0
Test Conditions
Input -6dBm
1020 Hz
1020 Hz
0-200 Hz
200-300 Hz
300-400 Hz
400-600 Hz
600-2400 Hz
2400-3000 Hz
3000-3400 Hz
Input 1020 Hz
0 to + 3dBm
-40 to 0dBm
-50 to -40dBm
-55 to-50dBm
THD < 5%
Input 1020 Hz
THD < 5%
Input 1020 Hz
Input at 2-Wire
0 to -10dBm
-20dBm
-30dBm
-40dBm
-50dBm
Input at 2-Wire
4
Gain Variation with Input Level
(relative to gain at 1020Hz with
-6dBm input)
5
6
7
Signal input Overload Level at
2-Wire
Signal Output Overload Level at
DSTo
Signal to Total Distortion Ratio at
DSTo
35
33.8
28.8
19.5
14.5
dB
dB
dB
dB
dB
8
Out-of-Band Discrimination at
DSTo:
Signals in 4.6 -72 kHz band
Signals in 300 -3400 Hz band
other than 1020Hz
Signals in 4.6 -72 kHz band
Harmonic Distortion
(2nd or 3rd Harmonic) at DSTo
Idle Channel Noise at DSTo
-72
-50
-40
-25
-41
-64
dBm0
dBm0
dBm0
dB
dBm0p
-25dBm, 4.6 -72kHz
0dB, 1020 Hz
0dBm, 300-3400 Hz
9
10
† AC Gain 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.
x
Codec provides adjustment in 1 dB steps.
Note 1: With the transmit gain set to 0dB; 0dBm at the Tip-Ring input will appear as 0dBmO at the DSTo output.
Note 2: The transmit codec gain is set to 0dB unless otherwise specified.
Note 3: All dBm is referenced to 600Ω.
Note 4: Refer to table 2 for control of SLIC gain.
Note 5: Loss Distortion with Frequency is equivalent to the negative of Frequency Response Gain.
2-276
MITEL [ MITEL NETWORKS CORPORATION ]
