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AS2525 数据表(PDF) 21 Page - ams AG

部件名 AS2525
功能描述  Single-Chip Handsfree Phone CMOS Integrated Circuit
PDF  26 Pages
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制造商  AMSCO [ams AG]
网页  http://www.ams.com
标志 AMSCO - ams AG

AS2525 数据表(HTML) 21 Page - ams AG

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Preliminary
AS2525
Rev. 1.3
Page 21
May 1999
DTMF
Symbol
Parameter
Condition
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 Dialling
Symbol
Parameter
Condition
Min.
Typ.
Max.
Units
t
DR
Dialling 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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