MT91L62 查看數據表（PDF） - Mitel Networks
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MT91L62 Datasheet PDF : 17 Pages
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Advance Information
MT91L62
AC Characteristics† for D/A (Receive) Path - 0dBm0 = ALo3.17 - 3.17dB = 1.027Vrms for µ-Law and 0dBm0 =
ALo3.14 - 3.14dB =1.067Vrms for A-Law, at the Codec. (VRef=0.4 volts and VBias=1.5 volts.)
Characteristics
Sym Min Typ‡ Max Units
Test Conditions
1 Analog output at the Codec full
scale
ALo3.17
ALo3.14
4.183
4.331
1 Analog output at the CODEC
full scale.
ALo3.17
ALo3.14
4.183
4.331
2 Absolute half-channel gain.
Din to HSPKR±
GAR1 -0.6
0
0.6
3 Gain tracking vs. input level
GTR -0.3
0.3
ITU-T G.714 Method 2
-0.6
0.6
-1.6
1.6
Vp-p
Vp-p
Vp-p
Vp-p
dB
µ-Law
A-Law
µ-Law
A-Law
@1020Hz
dB 3 to -40 dBm0
dB -40 to -50 dBm0
dB -50 to -55 dBm0
4 Signal to total distortion vs. input GQR 35
level.
29
ITU-T G.714 Method 2
24
dB 0 to -30 dBm0
dB -40 dBm0
dB -45 dBm0
5 Receive Idle Channel Noise
6 Gain relative to gain at 1020Hz
200 Hz
300 - 3000 Hz
3000 - 3300 Hz
3300 Hz
3400 Hz
4000 Hz
4600 Hz
>4600 Hz
NCR
11.5 14 dBrnC0 µ-Law
NPR
-80 -77 dBm0p A-Law
GRR
0.25
dB
-0.25
0.25
dB
-0.90
0.25
dB
-0.9 -0.1 0.25
dB
-0.9 -0.5 0.25
dB
-23 -12.5 dB
-41 -25
dB
-25
dB
7 Absolute Delay
DAR
240
8 Group Delay relative to DAR
DDR
750
380
130
750
µs at frequency of min. delay
µs 500-600 Hz
µs 600 - 1000 Hz
µs 1000 - 2600 Hz
µs 2600 - 2800 Hz
9 Crosstalk
D/A to A/D
A/D to D/A
CTRT
CTTR
-90 -74
-90 -80
dB G.714.16
dB ITU-T
† 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.
Electrical Characteristics† for Analog Outputs
Characteristics
Sym Min Typ‡ Max Units
Test Conditions
1 Output load impedance
EZL 20k
ohms across AOUT±
2 Allowable output capacitive
ECL
20
load
pF each pin:
† 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.
AOUT+,
AOUT-
7-181
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