參數(shù)資料
型號: AS2525B
廠商: AUSTRIAMICROSYSTEMS AG
元件分類: 無繩電話/電話
英文描述: Single Chip Speaker Phone
文件頁數(shù): 21/27頁
文件大?。?/td> 459K
代理商: AS2525B
Datasheet AS2525
austria
micro
systems
Revision 2.1
Page 21 of 27
DTMF
Symbol
Parameter
Conditions
Min.
Typ.
Max.
Units
DF
Frequency Deviation
Deviation of ceramic resonator
is not included
1.2
%
V
MF
MF Tone Level at LS
(Low Group)
Default
-4.5
-5.5
-6.5
dBm
V
MF-RANGE
MF Tone Level Range at LS
(Low Group)
13 steps
-18/-6
dBm
V
L_H
Pre-emphasis, Low to High
2.0
2.6
3.2
dBr
V
UFC
Unwanted Frequency
Components
300 Hz....4.3 kHz
4.3 kHz…7 kHz
7 kHz....10 kHz
10 kHz…14 kHz
14 kHz....28.5 kHz
28.5 kHz....40 kHz
-40
-46
-52
-58
-70
-80
dBm
dBm
dBm
dBm
dBm
dBm
t
TD
Tone Duration, Minimum
Default
80
82.3
85
ms
t
ITP
Inter Tone Pause, Min.
Default
80
82.3
85
ms
t
TR
t
TR
Tone Rise Time
Tone Fall Time
From 10% to 90% amplitude
From 90% to 10% amplitude
5
5
ms
ms
V
CT
Comfort Tone Level, RO
Relative to LS, 4 steps
-36
-18
dBr
LD Dialing
Symbol
Parameter
Conditions
Min.
Typ.
Max.
Units
t
DR
Dialing Rate
Default
Option
9.53
10
20
10.5
pps
pps
t
/B
Break Period
Default
Option
Option
57
61.2
66
33
63
ms
ms
ms
t
M/
Make Period
Default
Option
Option
38
40.8
33
16.5
42
ms
ms
ms
t
PDP
Pre-Digit Pause
35
ms
t
IDP
Inter-Digit Pause
800
880
ms
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