MSM7584C View Datasheet(PDF) - Oki Electric Industry
Part Name
Description
MFG CO.
'MSM7584C' PDF : 57 Pages View PDF
¡ Semiconductor
MSM7584C
AC Characteristics (CODEC) (Continued)
Parameter
Condition
Symbol
Frequency (Hz) Level dBm0
Idle Channel Noise
NIDLT
—
(*1)
NIDLR
—
AIN = SG
(*2)
Absolute Level (*3)
Power Supply Noise
Rejection Ratio
AVT
AVR
PSRRT
PSRRR
1020
Noise frequency:
0 kHz to 50 kHz
0
Noise level:
50 mVPP
(VDD = 2.7 V to 3.6 V, Ta = –25°C to +70°C)
Min.
Other
—
—
—
—
GSX2
VFRO
—
0.285
0.285
30
30
Typ. Max. Unit
—
—
0.320
0.320
—
—
–68
(–75.7) dBm0p
–72 (dBmp)
(–79.7)
0.359 Vrms
0.359 Vrms
—
dB
—
dB
*1 P-message filter used
*2 PCMRI input: "11010101" (A-law), "11111111" (m-law)
*3 0.320 Vrms = 0 dBm0 = –7.7 dBm (600 W)
ADPCM characteristics are fully compliant with ITU-T Recommendation G.721.
AC Characteristics (DTMF and Other Tones)
Parameter Symbol
Condition
(VDD = 2.7 V to 3.6 V, Ta = –25°C to +70°C)
Min. Typ. Max. Unit
Frequency Deviation
DFT1 DTMF tones
DFT2 Other various tones
–7
—
–7
—
7
Hz
7
Hz
Tone Reference
Output Level
(*1)
VTL
DTMF (low group)
Transmit side tone
–18
–16
–14 dBm0
VTH
DTMF (high group), other –16
–14
–12 dBm0
VRL
DTMF (low group)
Receive side tone
–4
–2
VRH
DTMF (high group), other –2
0
0 dBm0
2 dBm0
DTMF Tone Level Relative Value RDTMF VTH/VTL, VRH/VRL
1
2
3
dB
*1 Not including programmable gain set values
AC Characteristics (Gain Settings)
Parameter Symbol
Condition
Transmit/Receive Gain
Setting Accuracy
DG For all gain set values
(VDD = 2.7 V to 3.6 V, Ta = –25°C to +70°C)
Min. Typ. Max. Unit
–1
0
1
dB
AC Characteristics (VOX Function)
Parameter Symbol
Condition
Transmit VOX
Detection Time
TVXON SilenceÆvoice VOXO pin: See Fig. 2
(Voice and Silence
Detection Time)
Voice/silence
TVXOF
VoiceÆsilence
differential: 10 dB
Transmit VOX
Detection Level Accuracy DVX
(Voice Detection Level)
For detection level set values by
CR6 - B6, B5
(VDD = 2.7 V to 3.6 V, Ta = –25°C to +70°C)
Min. Typ. Max. Unit
—
5
— ms
140/300 160/320 180/340 ms
–2.5
0
2.5 dB
28/57
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