Preliminary Information
AC Electrical Characteristics
†
- Receive (D/A) Path
Characteristics
1
Absolute Gain
Default 1 (Codec 0dB, GS = 5V)
Default 2 (Codec 0dB, GS =oV)
Gain Programmable Range
GS = 5V
x
GS = 0V
x
Loss Distortion with Frequency
(relative to level at 1020 Hz)
with Codec at 0dB and GS =5V)
Sym
Min
-0.5
-1.0
-7
-7.5
-0.3
-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
‡
0.0
-0.5
Max
0.5
0.0
-0
-0.5
-
-
1.0
0.75
0.35
0.55
1.5
0.25
0.25
0.5
1.5
Units
dB
dB
dB
dB
dB
dB
dB
dB
dB
dB
dB
dB
dB
dB
dB
dBm
dBm0
MH89625C
Test Conditions
Input -10dBm0
1020 Hz
1020 Hz
Input -10dBm0
1020 Hz
1020 Hz
Input -10dBm0
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 -20dBm
-30dBm
-40dBm
-50dBm
Input at DSTi
2
3
4
Gain Variation with Input Level
(relative to gain to 1020 Hz with
-10dBm0 input)
5
6
7
Signal Input Overload Level at DSTi
Signal Output Overload Level at
2-Wire
Signal Output to Total
Distortion Ratio at 2-Wire
35
32.9
24.9
19.9
dB
dB
dB
dB
8
Out-of-Band Discrimination at
2-wire
Signals in 4.6 -72kHz band
Signals in 300-3400 Hz band
other than 1020 Hz
Signals in 4.6 -72 kHz band
-50
-40
dBm
dBm
-25dBm0, 4.6 -72 kHz
0dBm0, 1020 Hz
-25
-41
dBm
dB
0dBm0, 300 -3400 Hz
9
10
Harmonic Distortion
(2nd or 3rd Harmonic) at 2-Wire
Idle Channel Noise at
2-Wire
-73
-73
-67
-67
dBmp
dBmp
Gain Setting:
-3.5dB
-7dB
† 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 it 0dB; 0dBm0 at the DSTi input will appear as 0dBm at the Tip-Ring output.
Note 2: The receive codec gain is set to 0dB; and the receive gain adjustment is set to 0dB (GS =5V), 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.
2-277
MITEL [ MITEL NETWORKS CORPORATION ]
