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參數(shù)資料
| 型號： | AS2536 |
| 廠商： | AUSTRIAMICROSYSTEMS AG |
| 英文描述： | Multi-Standard CMOS Single Chip Telephone IC with Dual Soft Clipping |
| 中文描述： | 多標(biāo)準(zhǔn)單芯片的CMOS集成電路電話雙軟剪輯 |
| 文件頁數(shù)： | 5/25頁 |
| 文件大?。?/td> | 270K |
| 代理商： | AS2536 |
5
Rev. 7
July 1998
Data Sheet
AS2533...6
Power On Reset
The on chip power on reset circuit monitors the supply
voltage (V
) during off-hook. When V
rises above
approx. 1.2V, a power on reset occurs which clears the
RAM.
DC Conditions
The normal operating range is from 13 mA to 100 mA.
Operating range with reduced performance is from 5 mA
to 13 mA (parallel operation). In the operating range all
functions are operational.
At line currents below 13 mA the AS253x provides an
additional slope below 4.5V in order to allow parallel
operation (see figure 13).
The dc characteristic (excluding diode bridge) is
determined by the voltage at LI and the resistor R1 at line
currents above 13 mA as follows:
V
LS
=
V
LI
+
I
LINE
R
1
The voltage at LI is 4.5V in the normal operating range.
During pulse dialling the speech circuit and other part of
the device not operating is in a power down mode to
save current. The CS pin is pulled to V
in order to turn
the external shunt transistor on to keep a low voltage
drop at the LS pin during make periods.
AC Impedance
The ac impedance of the circuit is set by external
components. The impedance can be real or complex.
The ac impedance is determined as follows:
Z
AC
=
33
Z1
The dc value of Z1 should be 30
to maintain correct dc
performance.
Return loss and side tone cancellation can be determined
independant of each other.
Speech Circuit
The speech circuit consists of a transmit and a receive
path with dual soft clipping, mute, line loss compensation
and sidetone cancellation.
Transmit
The gain of the transmit path is 37 dB for 600
line
termination from M1/M2 to LS (see test circuit figure 10).
Keyboard Connections Continued
(Either
VOL
or
+/–
keys)
Figure 2c (AS2535)
P
P
P/
/
/M
M
M
1
1
1
2
2
2
3
3
3
4
4
4
5
5
5
6
6
6
7
7
7
8
8
8
9
9
9
0
0
0
*
*
*
#
#
#
R
R
R1
1
1
R
R
R2
2
2
R
R
R3
3
3
L
L
LN
N
NR
R
R
V
V
VO
O
OL
L
L
+
+
+
–
–
–
M
M
M1
1
1
M
M
M2
2
2
M
M
M3
3
3
M
M
M4
4
4
M
M
M5
5
5
M
M
M6
6
6
M
M
M7
7
7
M
M
M8
8
8
M
M
M9
9
9
M
M
M1
1
10
0
0
M
M
M1
1
11
1
1
C1
C2
C3
C4
R1
R2
R3
R4
M
M
M1
1
12
2
2
相關(guān)PDF資料 |
PDF描述 |
|---|---|
| AS2536P | Multi-Standard CMOS Single Chip Telephone IC with Dual Soft Clipping |
| AS2536T | Multi-Standard CMOS Single Chip Telephone IC with Dual Soft Clipping |
| AS2533 | Multi-Standard CMOS Single Chip Telephone IC with Dual Soft Clipping |
| AS2533P | Multi-Standard CMOS Single Chip Telephone IC with Dual Soft Clipping |
| AS2533T | Multi-Standard CMOS Single Chip Telephone IC with Dual Soft Clipping |
相關(guān)代理商/技術(shù)參數(shù) |
參數(shù)描述 |
|---|---|
| AS25360FLF | 制造商:TT Electronics / IRC 功能描述:AS25360FLF |
| AS25360HLF | 制造商:TT Electronics / IRC 功能描述:AS25360HLF |
| AS25360JLF | 制造商:TT Electronics / IRC 功能描述:AS25360JLF |
| AS25361FLF | 制造商:TT Electronics / IRC 功能描述:AS25361FLF |
| AS25361HLF | 制造商:TT Electronics / IRC 功能描述:AS25361HLF |
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