Advance Information
MT91L60/61
AC Characteristics† for D/A (Receive) Path - 0dBm0 = A
- 3.17dB = 1.027Vrms for µ-Law and 0dBm0 = A
Lo3.17
Lo3.14
- 3.14dB =1.067Vrms for A-Law, at the Codec. (V
= 0.4V and VBias=1.5 volts.)
Ref
‡
Characteristics
Sym
Min
Typ
Max
Units
Test Conditions
µ-Law
1
2
Analog output at the Codec full
scale
ALo3.17
ALo3.14
4.183
4.331
Vp-p
Vp-p
A-Law
Absolute half-channel gain.
GAR1
GAR2
GAR3
GAR4
-0.6
-6.6
-6.6
0
-6
-6
0.6
-5.4
-5.4
-11.4
dB
dB
dB
dB
DrGain=0, RxINC =1*
DrGain=0, RxINC =0*
DrGain=1, RxINC =1*
DrGain=1, RxINC =0*
@ 1020 Hz
Din to HSPKR±
-12.6
-12
Tolerance at all other receive
filter settings
-0.2
±0.1
+0.2
dB
(-1 to -7dB)
3
4
Gain tracking vs. input level
ITU-T G.714 Method 2
GTR
-0.3
-0.6
-1.6
0.3
0.6
1.6
dB
dB
dB
3 to -40 dBm0
-40 to -50 dBm0
-50 to -55 dBm0
Signal to total distortion vs.
input level.
ITU-T G.714 Method 2
GQR
35
29
24
dB
dB
dB
0 to -30 dBm0
-40 dBm0
-45 dBm0
5
6
Receive Idle Channel Noise
NCR
NPR
11.5
-80
14
-77
dBrnC0 µ-Law
dBm0p A-Law
Gain relative to gain at 1020Hz
200 Hz
300 - 3000 Hz
3000 - 3300 Hz
3300 Hz
3400 Hz
4000 Hz
4600 Hz
>4600 Hz
GRR
0.25
0.25
0.25
0.25
0.25
-12.5
-25
dB
dB
dB
dB
dB
dB
dB
dB
-0.25
-0.90
-0.9
-0.1
-0.5
-23
-41
-0.9
-25
7
8
Absolute Delay
DAR
DDR
240
µs
at frequency of min. delay
Group Delay relative to DAR
750
380
130
750
µs
µs
µs
µs
500-600 Hz
600 - 1000 Hz
1000 - 2600 Hz
2600 - 2800 Hz
9
Crosstalk
D/A to A/D
A/D to D/A
CTRT
CTTR
-90
-90
-74
-80
dB
dB
ITU-T
G.714.16
† AC Electrical Characteristics are over recommended temperature range & recommended power supply voltages.
‡ Typical figures are at 25 °C and are for design aid only: not guaranteed and not subject to production testing.
* Note: RxINC, refer to Control Register 1, address 00h.
21
MITEL [ MITEL NETWORKS CORPORATION ]
