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參數(shù)資料
| 型號： | AS2525 |
| 廠商： | AUSTRIAMICROSYSTEMS AG |
| 元件分類： | 無繩電話/電話 |
| 英文描述： | Single-Chip Handsfree Phone CMOS Integrated Circuit |
| 中文描述： | TELEPHONE MULTIFUNCTION CKT, PQFP44 |
| 封裝： | TQFP-44 |
| 文件頁數(shù)： | 1/26頁 |
| 文件大?。?/td> | 264K |
| 代理商： | AS2525 |
Preliminary
AS2525
Rev. 1.3
Page 1
May 1999
Key Features
K
Line/speech handsfree circuit, LD/MF repertory
dialler, and tone ringer on one 44 pin CMOS chip
K
Operating range from 15 to 100 mA line current
(down to 5 mA with slightly reduced performance)
K
All significant parameters programmable with
external EEPROM
K
Volume control of receiver signal
K
Handsfree function with enhanced voice switching
K
Low noise (max. -72 dBmp)
K
Unique EMC performance
K
LD/MF switchable dialling with temporary MF
mode
K
Repertory dialling with last number redial and
memory dialling (8 x 2 direct and 10 indirect)
K
Call restriction with PIN code
K
Serial interface for EEPROM and LCD driver
K
2-tone/3-tone ringer with ring frequency detection
Block Diagramme
General Description
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.
The AS2525 uses an external EEPROM for a 31 digit
last number redial storage and memories for 26
numbers each containing up to 21 digits/data.
The device provides a volume control for the earpiece
and the loudspeaker. The volume can be controlled by
pressing the
[V-]
/
[V+]
keys.
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.
CS
SS
LI
V
PP
LS
+
–
+
–
+
–
+
V
SS
30
RI
STB
300
Z
BAL
A
GND
V
DD
V
DD
V
DD
–
+
V
PP
V
PP
M1
M2
M3
M4
LO1
LO2
V
SSA
RECI
RECV
RO
DET.
SLINE
DET.
VOICE
SWITCHING
PEAK
DET.
DTMF
MELODY
DEBOUNCE
CPU
DIALLER
CODC/DC
OSCILLATOR
KEYSCANNING
CM
KEYBOARD (C1-4/R1-3)
HS
HF
DM/HM
FCI
DPN
LED
DI DO
CLK
CS1 CS2
V
SS
CI
SUPPLY
V
REF
V
DD
A
GND
A
GND
FT2
CBN
FT1
AS2525
3.58
MHz
Austria Mikro Systeme International AG
Single-Chip Handsfree Phone
CMOS Integrated Circuit
相關PDF資料 |
PDF描述 |
|---|---|
| AS2534ET | Multi-Standard CMOS Single Chip Telephone IC with Dual Soft Clipping |
| AS2535 | Multi-Standard CMOS Single Chip Telephone IC with Dual Soft Clipping |
| AS2535P | Multi-Standard CMOS Single Chip Telephone IC with Dual Soft Clipping |
| AS2535T | Multi-Standard CMOS Single Chip Telephone IC with Dual Soft Clipping |
| AS2536 | Multi-Standard CMOS Single Chip Telephone IC with Dual Soft Clipping |
相關代理商/技術參數(shù) |
參數(shù)描述 |
|---|---|
| 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 標準包裝: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 |
| AS2525B | 功能描述:電信線路管理 IC RoHS:否 制造商:STMicroelectronics 產(chǎn)品:PHY 接口類型:UART 電源電壓-最大:18 V 電源電壓-最小:8 V 電源電流:30 mA 最大工作溫度:+ 85 C 最小工作溫度:- 40 C 安裝風格:SMD/SMT 封裝 / 箱體:VFQFPN-48 封裝:Tray |
| AS2525B-T | 功能描述:IC HANDSFREE TELEPH CMOS 44-TQFP RoHS:是 類別:集成電路 (IC) >> 接口 - 濾波器 - 有源 系列:* 產(chǎn)品培訓模塊:Lead (SnPb) Finish for COTS Obsolescence Mitigation Program 標準包裝:1,000 系列:- 濾波器類型:連續(xù)時間，帶通低通 頻率 - 截止或中心:150kHz 濾波器數(shù):4 濾波器階數(shù):8th 電源電壓:4.74 V ~ 11 V，±2.37 V ~ 5.5 V 安裝類型:表面貼裝 封裝/外殼:28-SOIC（0.295"，7.50mm 寬） 供應商設備封裝:28-SOIC W 包裝:帶卷 (TR) |
| AS2525-DB | 制造商:AMS 功能描述:BOARD DEMO FOR AS2525 制造商:ams 功能描述:AS2525 Demo Board |
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