MSM7570-01TS-K Ver la hoja de datos (PDF) - Oki Electric Industry
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MSM7570-01TS-K Datasheet PDF : 26 Pages
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¡ Semiconductor
MSM7570-01
AC Characteristics (DTMF and Other Tones)
(VDD = 4.5 V to 5.5 V, Ta = –25°C to +70°C)
Parameter
Symbol
Condition
Min. Typ. Max. Unit
Frequency Difference
DFT1 DTMF Tones
DFT2 Other Tones
–7
—
+7
Hz
–7
—
+7
Hz
Original (reference)
Tone Signal Level
*4
VTL Transmit Tones
DTMF (Low)
DTMF (High)
–18
–16
–14 dBmO
VTH (Gain setting 0 dB) and Other Tones –16
–14
–12 dBmO
VRL Receive Tones
DTMF (Low)
–10
–8
–6 dBmO
(Tone generator DTMF (High)
VRH gain setting –6 dB) and Other Tones –8
–6
–4 dBmO
Relative Level of
DTMF Tones
RDTMF VTH/VTL, VRH/VRL
1
2
3 dBmO
*4 Does not contain the setting value set for the programmable gain
AC Characteristics (Programmable Gain Stages)
(VDD = 4.5 V to 5.5 V, Ta = –25°C to +70°C)
Parameter
Symbol
Condition
Min. Typ. Max. Unit
Gain Accuracy
DG All gain stages, to programmed value –1
0
+1
dB
AC Characteristics (VOX Function)
Parameter
Symbol
Condition
Transmit VOX Detect Time
(Voice Signal ON/OFF Detect Time)
Transmit VOX Detect Level
tVXON
tVXOF
OFF Æ ON
ON Æ OFF
VOXO,
See Fig.2
Accuracy
(Threshold Level)
DVX To the values (CR6-B6, B5)
*5 When single tone is input at 1000 Hz.
(VDD = 4.5 V to 5.5 V, Ta = –25°C to +70°C)
Min.
—
Typ. Max. Unit
10 *5 —
ms
150/310 160/320 170/330 ms
–2.5
0
+2.5 dB
15/26
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