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LTC222 PDF预览

LTC222

更新时间： 2024-11-27 14:57:55
品牌 Logo 应用领域
亚德诺 - ADI 开关锁存器
页数 文件大小 规格书
12页 145K
描述
具数据锁存器的微功率、低电荷注入、四通道 CMOS 模拟开关

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中文翻译

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LTC222 数据手册

 浏览型号LTC222的Datasheet PDF文件第2页浏览型号LTC222的Datasheet PDF文件第3页浏览型号LTC222的Datasheet PDF文件第4页浏览型号LTC222的Datasheet PDF文件第5页浏览型号LTC222的Datasheet PDF文件第6页浏览型号LTC222的Datasheet PDF文件第7页 
LTC221/LTC222  
Micropower, Low Charge  
Injection, Quad CMOS Analog  
Switches with Data Latches  
U
FEATURES  
DESCRIPTIO  
The LTC®221 and LTC222 are micropower, quad CMOS  
analog switches which typically dissipate only 250µW  
from ±15V supplies and 40µW from a single 5V supply.  
Onboard latches allow the LTC221 and LTC222 to inter-  
face directly to most microprocessor buses. The switches  
have 65Ω typical on resistance and a very high off resis-  
tance. A break before make characteristic is inherent in  
these switches to prevent the shorting of two channels.  
Thesignalrangeis±15Vwithasupplyvoltageof±15Vand  
0Vto5Vwithasingle5Vsupply.Theswitcheshavespecial  
charge compensation circuitry which greatly reduces  
charge injection to a maximum of±25pC (±15V supplies).  
■
Micropower Operation  
■
Single 5V or ±15V Supply Operation  
■
Low Charge Injection  
Low RON  
Low Leakage  
Guaranteed Break Before Make  
Latch Resistant Design  
TLL/CMOS Compatible  
■
■
■
■
■
■
Improved Second Source for DG221/DG222  
Microprocessor Bus Compatible  
■
U
KEY SPECIFICATIO S  
The LTC221 and LTC222 are designed for applications  
Supply Current ..................... I+ = 40µA, I– = 5µA Max  
Charge Injection  
■
such as microprocessor controlled programmable gain  
amplifiers, automatic test equipment, communication  
systems, and data acquisition systems. The LTC221 is  
normally closed and the LTC222 is normally open as  
shown in the Logic Table.  
■
±15V Supplies .................................±25pC Max  
Single 5V Supply.................................. 2pC Typ  
RON ............................................................... 65ΩTyp  
Signal Range ..................................................... ±15V  
■
■
, LTC and LT are registered trademarks of Linear Technology Corporation.  
U
TYPICAL APPLICATIO  
Two-Channel, 12-Bit, Self Calibrating Data Acquisition System  
LTC221/LTC222  
WR  
WR  
IN4  
+
V
LOGIC  
DECODER  
5V  
ADDRESS BUS  
GND  
IN3  
IN2  
IN1  
–
DATA BUS B0 – B3  
V
TO MICROPROCESSOR  
e.g. TMS320C25  
15V  
S1  
S2  
D1  
D2  
5V  
V
FS  
+
10k  
LTC1292  
CLK  
IN  
V
IN  
OV TO 5V  
LT1006  
D
12-BIT  
ADC  
OUT  
S3  
S4  
D3  
D4  
–
SERIAL PORT  
100k  
CS  
V
150k  
REF  
–IN  
GND  
270Ω  
120Ω  
–15V  
LT1027  
15V  
V
FS  
LTC221/222 • TA01  
2212fa  
1
1234567...12

中文翻译

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