參數(shù)資料
型號: MSM7524
廠商: OKI SEMICONDUCTOR CO., LTD.
英文描述: DTMF Transceiver(雙音多頻收發(fā)器)
中文描述: 雙音多頻收發(fā)器(雙音多頻收發(fā)器)
文件頁數(shù): 10/21頁
文件大?。?/td> 140K
代理商: MSM7524
Semiconductor
MSM7524
10/21
ANALOG INTERFACE CHARACTERISTICS
DTMF Generator
*P: Inband energy
Call Progress Tone (CPT) Generator
(V
DD
= +5 V ±10%, Ta = –25°C to 85°C)
Typ.
Min.
–6.5
–8.5
Low Group Tone
–7.5
High Group Tone
0.0
V
PBTH
-V
PBTL
To Nominal
Rrequency
Total Harmonics
- Fundamental
4 to 8 kHz
8 to 12 kHz
12 kHz to
Unit
dBm
dBm
dB
Max.
–4.5
–3.5
2.0
Condition
Symbol
V
PBTL
V
PBTH
V
PBDF
DTMF Tone Transmit Amplitude
–5.5
1.0
Tone Transmit Amplitude Ratio
dB
dB
dB
P-20
P-60
P-60
V
SPS
Parameter
Tone Frequency Accuracy
%
±1.5
f
DPB
Total Harmonic Distortion
dB
–23
THD
PB
Out-of-Band Spurious *
at
PBTO
(V
DD
= +5 V ±10%, Ta = –25°C to 85°C)
Typ.
Min.
0
–2.0
400
380
CPT2 = 0, CPT1 = 0
330
CPT2 = 0, CPT1 = 1
420
CPT2 = 1, CPT1 = 0
460
CPT2 = 1, CPT1 = 1
Total Harmonics
– Fundamental
Unit
dBm
Hz
Hz
Hz
Hz
Max.
2.0
420
370
460
500
Condition
Symbol
V
CPT
f
CPT0
Tone Transmit Amplitude Ratio
f
CPT1
f
CPT2
f
CPT3
Parameter
at
CPTO
Tone Amplitude
350
440
480
THD
CPT
dB
–23
Tone Harmonic Distortion
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