ML7041 Datasheet, PDF (15/28 Pages) OKI electronic componets – single-channel full duplex CODEC LSI device which performs mutual transcoding between the analog voice band signals ranging from 300 to 3400 Hz and th

OKI Semiconductor
FEDL7041-04
ML7041
AC Characteristics (DTMF and Other Tones)
(VDD = 2.4 to 3.3 V, Ta = –40 to +85°C)
Parameter
Symbol
Condition
Min. Typ. Max. Unit
Frequency Difference
DFT DTMF Tones, Other Tones
–1.5
— +1.5 %
VTL
Transmit tones DTMF (Low) and
(gain setting of Other Tones
–18
Original (reference) Tones Signal ^VTH
0 dB)
DTMF (High)
–16
Level *5
VRL Receive tones DTMF (Low)
–4
VRH
(gain setting of _{DTMF (High) and}
–6 dB) _{Other Tones}
–2
–16 –14 dBm0
–14 –12 dBm0
–2
0 dBm0
0
+2 dBm0
Relative Level of DTMF Tones RDTMF VTH/VTL, VRH/VRL
+1
+2
+3 dB
*5 Not including programmable gain set values
AC Characteristics (Programmable Gain Stages)
(VDD = 2.4 to 3.3 V, Ta = –40 to +85°C)
Parameter
Symbol
Condition
Min. Typ. Max. Unit
Gain Accuracy
DG
All gain stages, to programmed
value
–1
0
+1
dB
AC Characteristics (Voice Detect Function)
Parameter
Symbol
Condition
(VDD = 2.4 to 3.3 V, Ta = –40 to +85°C)
Min. Typ. Max. Unit
Voice Detection Time
Voice Detection Accuracy
TVON
Silence → Voice
—
5
—
ms
TVOF ^{(Voice/silence differential: 10 dB)} 140
160
180 ms
For detection level set values by
DVX
CR6-B6
–2.5
0
2.5
dB
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