- 您現(xiàn)在的位置：買賣IC網(wǎng) > PDF目錄369368 > AS2524T (AUSTRIAMICROSYSTEMS AG) Line Interface Speaker Phone; Package Type: SOIC-28; Temperature Range: -25 - +70 °C; Output Interface: Parallel; Supply Voltage: 3,00-5,00 PDF資料下載
參數(shù)資料
| 型號(hào)： | AS2524T |
| 廠商： | AUSTRIAMICROSYSTEMS AG |
| 元件分類： | 無(wú)繩電話/電話 |
| 英文描述： | Line Interface Speaker Phone; Package Type: SOIC-28; Temperature Range: -25 - +70 °C; Output Interface: Parallel; Supply Voltage: 3,00-5,00 |
| 封裝： | SOIC-28 |
| 文件頁(yè)數(shù)： | 5/19頁(yè) |
| 文件大小： | 490K |
| 代理商： | AS2524T |
第1頁(yè)第2頁(yè)第3頁(yè)第4頁(yè)當(dāng)前第5頁(yè)第6頁(yè)第7頁(yè)第8頁(yè)第9頁(yè)第10頁(yè)第11頁(yè)第12頁(yè)第13頁(yè)第14頁(yè)第15頁(yè)第16頁(yè)第17頁(yè)第18頁(yè)第19頁(yè)
Data Sheet AS2523, AS2524, AS2524B
austria
micro
systems
Functional Description
The gain of the M3/M4
→
LS is set to +46dB.
This gain can be changed by programming from +39dB to
+54dB in 1dB steps on AS2523. The input is differential
with an impedance of 10k
Ω
. The soft clip circuit limits the
output voltage at LS to 2V
p
. There is no LLC for this path.
DC conditions
The normal operating mode is from 15mA to 100mA. An
operating mode with reduced performance is from 5mA to
15mA. In the line hold range from 0mA to 5mA the device
is in a power down mode.
The DC characteristic is determined by the voltage at LI-
pin and a 30
Ω
resistor between LI- and LS-pin. It can be
calculated by the following equation: V
LS
= V
LI
+ I
Line
*
30
Ω
. V
LI
can be programmed to be 3.5V or 4.5V.
Receive path
The gain of the LS
→
RO receive path is set to +7.5dB.
This gain can be changed by programming from –7.5dB to
+7.5dB in 1dB steps (Register
Rxgain
). The receive input
is the differential signal of RI and STB. The soft clip circuit
limits the output voltage at RO to 1V
p.
It prevents harsh
distortion and acoustic shock. There is LLC for this path.
The gain of the LS
→
LO receive path is set to +32dB.
This gain can be changed by programming from +19dB to -
34dB in 1dB steps. The user can also change the gain via
Register
Handsfree receive end gain
(See section
"Handsfree"). The receive input is the differential signal of
RI and STB. The soft clip circuit limits the output voltage at
LO to 1.1V
p.
It prevents harsh distortion and acoustic
shock. There is optional LLC for this path.
2/4 wire conversion
AS2523/24 has built in two Wheatstone bridges with one
common ground. This provides a maximum of
independence of AC-impedance and side tone from each
other. One can adapt side tone without changing the AC-
impedance.
AC-impedance
The AC-impedance of AS2523/24 is set to t.m. 1000
Ω
.
With the external capacitor at CI-pin it can be programmed
complex. With an external resistor of approx. 1.5k
Ω
connected to the LS-pin it can be programmed to 600
Ω
.
Line Loss Compensation (AS2523, AS2524B)
-
-
-
When it is activated, the transmit and receive gains for
both I/O’s are decreased by 6dB at line currents from
20mA to 50mA or from 45mA to 75mA.
programmable on AS2523
not activated at AS2524
permanently activated at AS2524B
Side Tone
A good side tone cancellation can be achieved by using the
following equation:
Z
BAL
/Z
LINE
= 10
Handsfree
The handsfree function allows voice communication without
using the handset (full 2-way speaker phone). Two voice
controlled attenuators prevent acoustic coupling between
the loudspeaker and the microphone. The voice switching
circuit has three states, namely idle, transmit or receive. In
receive mode the attenuation of the receive path and the
transmit path can be controlled by Register
Handsfree
receive end gain
between 0dB and -20dB. The following
table shows how voice switching is controlled
Transmit path
The gain of the M1/M2
→
LS is set to +37dB. This gain
can be changed by programming on AS2523 from +30dB to
+45dB in 1dB steps (Register
Txgain
), on AS2524 / 24B it
is set to +37dB per default. The input is differential with an
impedance of 10k
Ω
. The soft clip circuit limits the output
voltage at LS to 2V
p.
There is LLC for this path.
TX_atten
Backgnd
noise
monitor
Voice
switching
speech
RX
voice switching circuit
Revision 1.13
Page 5 of 19
相關(guān)PDF資料 |
PDF描述 |
|---|---|
| B010000400000000 | EDGE CONNECTOR 16W |
| B01N60(1A600V) | 埸效應(yīng)管 |
| B02N60(2A600V) | 埸效應(yīng)管 |
| B033 | 1.0Amp Low Dropout Voltage Regulator Adjustable & Fix (0.40Volt Dropout) |
| B04N60(4A600V) | 埸效應(yīng)管 |
相關(guān)代理商/技術(shù)參數(shù) |
參數(shù)描述 |
|---|---|
| AS2524-T | 功能描述:IC LINE INTERFACE/SPKRPH 28-SOIC RoHS:是 類別:集成電路 (IC) >> 接口 - 電信 系列:* 產(chǎn)品培訓(xùn)模塊:Lead (SnPb) Finish for COTS 產(chǎn)品變化通告:Product Discontinuation 06/Feb/2012 標(biāo)準(zhǔn)包裝:750 系列:* |
| AS2524TT | 功能描述:AS2524 T SOIC28 LF T&RDP 制造商:ams 系列:* 包裝:剪切帶（CT） 零件狀態(tài):在售 安裝類型:表面貼裝 封裝/外殼:28-SOIC（0.295"，7.50mm 寬） 供應(yīng)商器件封裝:28-SOIC 標(biāo)準(zhǔn)包裝:1 |
| AS2525 | 制造商:AMSCO 制造商全稱:austriamicrosystems AG 功能描述:Single-Chip Handsfree Phone CMOS Integrated Circuit |
| AS2525 DB | 功能描述:AS2525 - Telecom Evaluation Board 制造商:ams 系列:- 零件狀態(tài):停產(chǎn) 主要用途:電信 嵌入式:- 使用的 IC/零件:AS2525 主要屬性:- 輔助屬性:- 所含物品:板 標(biāo)準(zhǔn)包裝:1 |
| AS2525_1 | 制造商:AMSCO 制造商全稱:austriamicrosystems AG 功能描述:Single-Chip Handsfree Phone CMOS Integrated Circuit |
發(fā)布緊急采購(gòu)，3分鐘左右您將得到回復(fù)。