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參數(shù)資料
| 型號： | AS2504 |
| 廠商： | AUSTRIAMICROSYSTEMS AG |
| 英文描述： | ECONOLINE: REC3-S_DRW(Z)/H4,H6 - Safety standards and approval: EN 60950 certified, rated for 250VAV (LVD test report)- Applied for Ul 1950 Component Recognised Certification- 3W DIP Package- 4kVDC & 6kVDC Isolation- Regulated Output- Continuous Short Circiut Protection Auto-Restarting |
| 中文描述： | 無繩電話，應答機線路接口 |
| 文件頁數(shù)： | 2/12頁 |
| 文件大小： | 202K |
| 代理商： | AS2504 |
Preliminary Data Sheet
AS2504
2/12
August 1998
Pin description
Pin #
Symbol
Function
7
LS
L
ine Current
S
ense Input
Input for sensing the line current
5
LI
L
ine
I
nput
Input used for power extraction and line current sensing
6
RI
R
eceive
I
nput
Input for ac-separated receive signal
13
STB
S
ide
T
one
B
alance Input
Input for side tone cancellation network
3
CS
C
urrent
S
hunt Control Output
N-channel open drain output to control the external high power shunt transistor
for synthesising AC- and DC-impedance, modulation of line voltage and shorting
the line during make periods of pulse dialling
14
CI
C
omplex
I
mpedance Input
Input pin for the capacitor to program a complex impedance
25
MASK
MASK
Input pin to set circuit into power down mode during e.g. LD-dialling. During
MASK=HIGH, CS-pin is internally shorted to ground.
26
LLC
L
ine
L
oss
C
ompensation Select Pin
45mA-75mA
20mA-50mA
None
—> VDD
—> AGND
—> VSS
11
VDD
V
oltage
D
rain
D
rain
Positive Power Supply, for external circuitry t.m. 4.0mA@I
L
=20mA and
4.0mA@I
L
=20mA
4
VSS
V
oltage
S
ource
S
ource
Negative Power Supply
12
AGND
A
nalogue
G
round
Special ground for the internal amplifiers
2
M1
M
icrophone Input
1
Differential input for the microphone (electret)
1
M2
M
icrophone Input
2
Differential input for the microphone (electret)
28
M3
M
icrophone Input
3
Differential input for the microphone (electret)
27
M4
M
icrophone Input
4
Differential input for the microphone (electret)
24
ATI1
A
uxiliary
T
ransmit
I
nput
1
R
I
>= 25k
A
uxiliary
T
ransmit
I
nput
2
R
I
>= 100k
23
ATI2
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