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參數(shù)資料
| 型號(hào)： | AS2578BN |
| 廠商： | AUSTRIAMICROSYSTEMS AG |
| 元件分類： | 無(wú)繩電話/電話 |
| 英文描述： | TELEPHONE CONTROLLER WITH 13 MEMORIES AND 2-WIRE BUS |
| 中文描述： | TELEPHONE MULTIFUNCTION CKT, PQCC28 |
| 封裝： | PLASTIC, LCC-28 |
| 文件頁(yè)數(shù)： | 20/22頁(yè) |
| 文件大小： | 280K |
| 代理商： | AS2578BN |
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Data Sheet
Rev. 3
20
AS2578 /B
March 1997
AC Characteristics Cont′d
Symbol
Parameter
Conditions
Min
Typ
Max
Units
DTMF
V
MF
V
L-H
THD
MF Tone Level
High group, R
L
= 15 k
R
L
= 15 k
R
L
= 15 k
, note 3
Note 1
-12.3
-10.8
-9.3
dBm
Preemphasis Low to High
2.0
2.4
2.8
dB
Distortion (0.3 - 4 kHz)
-23
dBr
t
TD
t
ITP
t
TR
t
TF
Tone Duration
80
82.3
85
ms
Inter Tone Pause
Note 1
80
82.3
85
ms
Tone Rise Time
Note 2
5
ms
Tone Fall Time
Note 2
5
ms
LD
t
DR
t
M/B
Dial Rate
±
5%
±
5%, MODE = low
±
5%, MODE = high
10
pps
Make/Break Period
40.8/61.2
ms
33/66
ms
t
IDP
t
MO
Inter Digit Pause
800
840
880
ms
Mute Overhang
t
M
t
FD
t
GLS
t
GLL
t
AP
Flash Duration
100
102
ms
Ground Loop, Short
R key
≤
540 ms
495
500
505
ms
Ground Loop, Long
R key > 540 ms
1200
1250
1300
ms
Automatic Pause
2.9
3.0
3.1
sec
Melody
V
MO
t
MD
F1
Melody Output
PDM
Melody Delay
10
ms
Frequency 1
770
800
830
Hz
F2
Frequency 2
1025
1067
1110
Hz
F3
Frequency 3
1280
1333
1385
Hz
t
DT
t
TO
f
MIN
f
MAX
Detection Time
80
85
ms
Detection Time-out
note 4
ms
Min. Detection Frequency
19
20
21
Hz
Max. Detection Frequency
58
59
60
Hz
Note 1: The values are valid during automatic dialling and are minimum values during manual dialling, i.e. the tones will
continue as long as the key is depressed.
Note 2: The rise time is the time from 10% of final value till the tone amplitude has reached 90 % of its final value.
Note 3: Relative to high group.
Note 4: The FCI circuit is reset by POR and on-hook. After a reset the FCI circuit is in a standby state. A positive edge on FCI
will start the 73 ms timer and the frequency discrimination is initiated. Whenever a period of the ring frequency is
missing, the timer is reset. When a valid ring signal is present for
≥
73 ms, the melody generator is started and is
directly controlled by a valid signal from the FCI circuit. This condition will remain until a new reset.
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| AS2578BP | 制造商:AMSCO 制造商全稱:austriamicrosystems AG 功能描述:TELEPHONE CONTROLLER WITH 13 MEMORIES AND 2-WIRE BUS |
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| AS2578P | 制造商:AMSCO 制造商全稱:austriamicrosystems AG 功能描述:TELEPHONE CONTROLLER WITH 13 MEMORIES AND 2-WIRE BUS |
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