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AS2525Q PDF预览

AS2525Q

更新时间: 2024-01-29 09:13:01
品牌 Logo 应用领域
艾迈斯 - AMSCO 电信集成电路电话
页数 文件大小 规格书
27页 461K
描述
Single-Chip Handsfree Phone CMOS Integrated Circuit

AS2525Q 技术参数

是否无铅: 不含铅是否Rohs认证: 符合
生命周期:Contact Manufacturer零件包装代码:QFP
包装说明:QFP, QFP44(UNSPEC)针数:44
Reach Compliance Code:unknownHTS代码:8542.39.00.01
风险等级:5.66Is Samacsys:N
其他特性:OPTIONAL 1:2 MAKE-BREAK RATIOJESD-30 代码:S-PQFP-G44
JESD-609代码:e3破损率:2:3
湿度敏感等级:3功能数量:1
端子数量:44最高工作温度:70 °C
最低工作温度:-25 °C封装主体材料:PLASTIC/EPOXY
封装代码:QFP封装等效代码:QFP44(UNSPEC)
封装形状:SQUARE封装形式:FLATPACK
峰值回流温度(摄氏度):NOT SPECIFIED电源:3/5 V
认证状态:Not Qualified子类别:Other Telecom ICs
最大压摆率:0.013 mA表面贴装:YES
技术:CMOS电信集成电路类型:TELEPHONE MULTIFUNCTION CIRCUIT
温度等级:OTHER端子面层:Matte Tin (Sn)
端子形式:GULL WING端子位置:QUAD
处于峰值回流温度下的最长时间:NOT SPECIFIEDBase Number Matches:1

AS2525Q 数据手册

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austriamicrosystems  
Single-Chip Handsfree Phone  
CMOS Integrated Circuit  
AS2525  
DATA SHEET  
Key Features  
General Description  
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-
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Line/speech handsfree circuit, LD/MF repertory dialler,  
and tone ringer on one 44 pin CMOS chip  
Operating range from 15 to 100 mA line current (down  
to 5 mA with slightly reduced performance)  
All significant parameters programmable with external  
EEPROM  
The AS2525 is a CMOS mixed-mode integrated circuit for  
use in feature phones, answering machines and fax  
machines. It contains an analogue line interface and  
speech circuit for a/b terminals, loudhearing, handsfree,  
enhanced LD/MF dialler, tone ringer with dc/dc converter  
and serial interface to EEPROM and LCD-driver (AS2591),  
all in a 44 pin package. The circuit is fully line powered.  
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-
-
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Volume control of receiver signal  
Handsfree function with enhanced voice switching  
Low noise (max. -72 dBmp)  
Unique EMC performance  
The AS2525 uses an external EEPROM for a 32 digit last  
number redial storage and memories for 28 numbers each  
containing up to 24 digits/data.  
LD/MF switchable dialing with temporary MF mode  
Repertory dialing with last number redial and memory  
dialing (8 x 2 direct and 12 indirect)  
The device provides a volume control for the earpiece and  
the loudspeaker. The volume can be controlled by pressing  
the [V-]/[V+] keys.  
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-
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Call restriction with PIN code  
Serial interface for EEPROM and LCD driver  
2-tone/3-tone ringer with ring frequency detection  
The versatility of the circuit is provided by programming all  
parameters through an external EEPROM. This allows easy  
adaptation to various PTT requirements worldwide.  
Package  
Available in 44 pin TQFP.  
Block Diagram  
LS  
V
FT2  
A
CBN  
FT1  
DD  
GND  
M1  
M2  
V
A
GND  
DD  
V
V
AS2525  
DD  
30  
LI  
LINE  
SENSE  
NOISE  
DET.  
V
SUPPLY  
REF  
+
CS  
SS  
+
+
M3  
M4  
A
DD  
GND  
PEAK  
DET.  
V
V
PP  
V
V
PP  
SS  
+
VOICE  
SS  
SWITCHING  
V
CI  
PP  
LO1  
LO2  
PEAK  
DET.  
300 Ω  
RI  
+
STB  
V
SSA  
RECI  
Z
BAL  
HS  
HF  
RECV  
DTMF  
MELODY  
DEBOUNCE  
DM/HM  
RO  
FCI  
DPN  
LED  
CPU  
DIALLER  
DC/DC  
KEYSCANNING  
OSCILLATOR  
CONVERTER  
DI DO CLK  
CS1 CS2  
CM  
KEYBOARD (C1-4/R1-3)  
3.58  
MHz  
Revision 2.1  
Page 1 of 27  

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