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參數(shù)資料
| 型號(hào)： | AS2525B |
| 廠商： | AUSTRIAMICROSYSTEMS AG |
| 元件分類： | 無(wú)繩電話/電話 |
| 英文描述： | Single Chip Speaker Phone |
| 文件頁(yè)數(shù)： | 3/27頁(yè) |
| 文件大小： | 459K |
| 代理商： | AS2525B |
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Datasheet AS2525
austria
micro
systems
Revision 2.1
Page 3 of 27
Pin #
Symbol
Type
Description
19
RECI
AI
REC
eive
I
nput
Analogue input for the handsfree receive path. Should be connected to RO via a coupling
capacitor.
REC
eive
V
oice Switching Input
Analogue input for receive voice switching path.
R
eceive
O
utput to
H
andset
Output for driving a dynamic earpiece with an impedance from 150
to 300
.
V
oltage
D
rain
D
rain
Positive Power Supply.
A
nalogue
G
rou
nd
Special ground for the internal amplifiers.
20
RECV
AI
21
RO
AO
22
V
DD
Supply
23
A
GND
Supply
24
CBN
AI
Analogue input pin for connecting a capacitor for background noise monitoring.
C
onverter
M
ake Output
This is an output for controlling the external switching converter. During ringing it converts
the ring signal into a 4V supply voltage.
Loudspeaker Power Supply
High power supply for the output driver stage.
L
oudspeaker
O
utputs
1/2
Output pins for a 32
( 25 to 50
) loudspeaker.
25
CM
DO
26
V
PP
Supply
27
28
LO1
LO2
AO
29
V
SSA
Supply
Power supply pin for LO1-LO2 output amplifier.
D
ial
M
ode/
H
eadset
M
ode Switch Input
Digital input for choosing between LD and MF dialing or choosing handset and headset
mode. See “Table 3: Parameter settings” for further details. This pin is scanned after manual
off-hook only.
F
requency
C
omparator
I
nput
This is a Schmitt-trigger input for ring frequency discrimination. Disabled during off-hook.
LED
Output
Digital output for connecting 2 mA LED to indicate handsfree mode.
Osc
illator Input
Input for ceramic resonator 3.58 MHz.
Keyboard
R
ows
(see Figure 1: Keyboard Layout).
30
DM/HM
DI
31
FCI
DI
32
LED
DO
33
OSC
34
35
36
R1
R2
R3
DI/O
37
38
39
40
C1
C2
C3
C4
DI/O
Keyboard
C
olumns
(see Figure 1: Keyboard Layout).
41
CLK
DO
Cl
oc
k
Clock output for 3-wire bus.
If signal is not activated, a pull down resistor (100 k
) is inserted.
D
ata
I
nput
Data input of 3-wire bus.
If signal is not activated, a pull down resistor (100 k
) is inserted.
42
DI
DI
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| AS2535P | Multi-Standard CMOS Single Chip Telephone IC with Dual Soft Clipping |
| AS2535T | 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 |
|---|---|
| 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(xùn)模塊:Lead (SnPb) Finish for COTS Obsolescence Mitigation Program 標(biāo)準(zhǔn)包裝:1,000 系列:- 濾波器類型:連續(xù)時(shí)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(yīng)商設(shè)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 |
| AS2525F | 制造商:AMSCO 制造商全稱:austriamicrosystems AG 功能描述:Single-Chip Handsfree Phone CMOS Integrated Circuit |
| AS2525Q | 制造商:AMSCO 制造商全稱:austriamicrosystems AG 功能描述:Single-Chip Handsfree Phone CMOS Integrated Circuit |
| AS252R3FLF | 制造商:TT Electronics / IRC 功能描述:AS252R3FLF |
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