FEDL7074-003DIGEST-01
OKI Semiconductor
ML7074-004GA
AC Characteristics
CODEC (Speech CODEC in G.711 (µ-law) Mode)
(Unless otherwise specified, AV
DD
= 3.0 to 3.6 V, DV
DD
0, 1, 2 = 3.0 to 3.6 V, AGND = DGND0, 1, 2 = 0.0 V,
Ta =
−20
to +60°C)
Conditions
Parameter
Symbol
Min.
Typ.
Max.
Unit
Frequency (Hz)
Level (dBm0)
0 to 60
25
dB
LT1
300 to 3000
0.20
dB
LT2
−0.15
1020
Reference value
LT3
Transmit frequency
0
characteristics
3300
0.80
dB
LT4
−0.15
3400
0
0.80
dB
LT5
3968.75
13
dB
LT6
0 to 3000
0.20
dB
LR2
−0.15
1020
Reference value
LR3
Receive frequency
3300
0.80
dB
0
LR4
−0.15
characteristics
3400
0
0.80
dB
LR5
3968.75
13
dB
LR6
3
35
dBp
SDT1
0
35
dBp
SDT2
Transmit signal to noise
35
dBp
1020
SDT3
−30
ratio [*1]
28
dBp
SDT4
−40
23
dBp
SDT5
−45
3
35
dBp
SDR1
0
35
dBp
SDR2
Receive signal to noise
35
dBp
1020
SDR3
−30
ratio [*1]
28
dBp
SDR4
−40
23
dBp
SDR5
−45
3
0.2
dB
GTT1
−0.2
Reference value
GTT2
−10
Transmit inter-level
0.2
dB
1020
GTT3
−40
−0.2
loss error
0.6
dB
GTT4
−50
−0.6
1.2
dB
GTT5
−55
−1.2
3
0.2
dB
GTR1
−0.2
Reference value
GTR2
−10
Receive inter-level loss
0.2
dB
1020
GTR3
−40
−0.2
error
0.6
dB
GTR4
−50
−0.6
1.2
dB
GTR5
−55
−1.2
Analog input =
dBm0p
NIDLT
−68
Idle channel noise
AVREF
[*1]
PCMI = “1”
dBm0p
NIDLR
−72
Transmit absolute level
AVT
1020
0
0.285 0.320 0.359
Vrms
[*2]
Receive absolute level
AVR
1020
0
0.285 0.320 0.359
Vrms
[*2]
Noise frequency
30
dB
PSRRT
Power supply noise
range: 0 to 50 kHz
reject ratio
PSRRR
30
dB
Noise level: 50mVpp
Notes: *1 Using P-message filter
*2 0.320 Vrms = 0 dBm0 =
−7.7
dBm (600Ω)
9/29
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