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A3845SLWTR PDF预览

A3845SLWTR

更新时间： 2024-01-19 17:51:50
品牌 Logo 应用领域
急速微 - ALLEGRO 局域网
页数 文件大小 规格书
8页 232K
描述
Consumer Circuit, Bipolar, PDSO20, PLASTIC, SOIC-20

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A3845SLWTR 技术参数

是否Rohs认证： 不符合生命周期：Obsolete
零件包装代码：SOIC包装说明：SOP, SOP20,.4
针数：20Reach Compliance Code：unknown
HTS代码：8542.39.00.01风险等级：5.91
商用集成电路类型：CONSUMER CIRCUITJESD-30 代码：R-PDSO-G20
JESD-609代码：e0长度：12.8 mm
功能数量：1端子数量：20
最高工作温度：85 °C最低工作温度：-20 °C
封装主体材料：PLASTIC/EPOXY封装代码：SOP
封装等效代码：SOP20,.4封装形状：RECTANGULAR
封装形式：SMALL OUTLINE峰值回流温度（摄氏度）：NOT SPECIFIED
电源：7.5/12 V认证状态：Not Qualified
座面最大高度：2.65 mm子类别：Other Consumer ICs
最大压摆率：22 mA最大供电电压 (Vsup)：12 V
最小供电电压 (Vsup)：7.5 V表面贴装：YES
技术：BIPOLAR温度等级：OTHER
端子面层：Tin/Lead (Sn/Pb)端子形式：GULL WING
端子节距：1.27 mm端子位置：DUAL
处于峰值回流温度下的最长时间：NOT SPECIFIED宽度：7.5 mm
Base Number Matches：1

A3845SLWTR 数据手册

 浏览型号A3845SLWTR的Datasheet PDF文件第2页浏览型号A3845SLWTR的Datasheet PDF文件第3页浏览型号A3845SLWTR的Datasheet PDF文件第4页浏览型号A3845SLWTR的Datasheet PDF文件第5页浏览型号A3845SLWTR的Datasheet PDF文件第6页浏览型号A3845SLWTR的Datasheet PDF文件第7页 
3845  
AM NOISE BLANKER  
This noise blanker integrated circuit contains all of the necessary  
circuitry for adding an extremely efficient (patented) noise-blanking  
technique to any type of AM tuner or receiver with RF input frequen-  
cies (or a first IF) to 30 MHz. The A3845ELW and A3845SLW  
feature dual audio channels and are intended for AM-stereo or indepen-  
dent sideband applications.  
RF IN  
RF BYPASS  
RF BIAS  
SUPPLY  
V
1
2
3
4
20  
19  
18  
17  
CC  
NO  
CONNECT  
NC  
RF GATE  
LOW  
DET  
RF GATE  
HIGH  
RF AGC  
A high input impedance, high-gain, broadband RF amplifier  
permits these devices to be directly connected to the RF stage of a  
tuner. Internal AGC circuitry ensures that the noise detection threshold  
remains constant with changes in input signal level. The RF gate  
response time is sufficiently fast to blank the noise pulse at the output  
of the mixer before the IF filter. Short blanking times effectively  
suppress most of the interfering noise. Residual audio noise is re-  
moved by an audio sample-and-hold gate. The RF blanking time,  
audio gate delay time, and audio gate blanking time can all be indepen-  
dently adjusted to suit the particular application.  
AUDIO DELAY  
GROUND  
16  
15  
5
6
AUDIO BLANK  
TIME (R)  
RF BLANK  
TIME  
NO  
CONNECT  
NO  
CONNECT  
NC  
NC  
14  
13  
7
8
AUDIO BLANK  
TIME (C)  
NOISE  
DIFFERENTIATOR  
AUDIO OUT  
1
9
AUDIO OUT  
2
12  
11  
AUDIO IN  
1
10  
AUDIO IN  
2
Dwg. PS-003-1A  
These AM noise blankers are packaged in plastic SOICs and are  
rated for operation over the a standard temperature range of -20°C to  
+85°C (suffix ‘SLW’) or an extended temperature range to -40°C  
(suffix ‘ELW’).  
FEATURES  
I RF Blanking to 30 MHz  
I Single-Channel or Stereo Audio Blanking  
I Adjustable RF and Audio Blanking Time  
I Adjustable Audio Blanking Delay  
I Sample-and-Hold MOS Audio Gates  
I Internal Voltage Regulation  
I Minimum External Components  
ABSOLUTE MAXIMUM RATINGS  
APPLICATIONS  
I AM and AM-Stereo Automotive Radios  
at TA = +25°C  
I CB Transmitter/Receivers  
I Short-Wave Receivers  
I Mobile Communications Equipment  
Supply Voltage, VCC . . . . . . . . . . . . . . 12 V  
Package Power Dissipation,  
PD . . . . . . . . . . . . . . . . . . . . . . . 1.78 W  
Operating Temperature Range, TA  
Suffix ‘ELW’ . . . . . . . . -40°C to +85°C  
Always order by complete part number:  
Suffix ‘SLW’ . . . . . . . . -20°C to +85°C  
Part Number  
Function  
Storage Temperature Range,  
A3845ELW  
A3845SLW  
Stereo Noise Blanker, Extended Temp. Range  
Stereo Noise Blanker, Standard Temp. Range  
TS . . . . . . . . . . . . . . . . -55°C to +125°C  
12345678

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