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MAX4540

更新时间： 2024-11-18 22:58:03
品牌 Logo 应用领域
美信 - MAXIM 复用器
页数 文件大小 规格书
20页 248K
描述
Low-Voltage, Single 8-to-1 and Dual 4-to-1 Cal-Multiplexers

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MAX4540 数据手册

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19-4780; Rev 1; 6/99  
Low-Voltage, Single 8-to-1 and  
Dual 4-to-1 Cal-Multiplexers  
39/MAX540  
General Description  
Features  
♦ On-Chip Gain and Offset Divider Networks  
The MAX4539/MAX4540 low-voltage, CMOS 8-channel  
(MAX4539) and dual 4-channel (MAX4540) multiplexers  
are ideal for precision ADC calibration and system self-  
monitoring applications. These calibration multiplexers  
(cal-muxes) have precision resistor-dividers to generate  
accurate voltage ratios from an input reference voltage.  
The reference ratios include 15/4096 and 4081/4096 of  
the external reference voltage, accurate to 15 bits, and  
1/2V+ and 5/8(V+ - V-), accurate to 8 bits. The external  
reference voltage as well as ground can also be  
switched to the output. The MAX4539/MAX4540 have  
enable inputs and address latching. All digital inputs  
have 0.8V and 2.4V logic thresholds, ensuring both  
TTL- and CMOS-logic compatibility when using a 5V  
or a single +5V supply. Protection diodes at all inputs  
provide an ESD rating >2kV.  
Provide 15-Bit Accurate Output Ratios  
♦ On-Chip V+ to GND and V+ to V- Divider Networks  
Provide 8-Bit Accurate Output Ratios  
♦ R : 100Ω max  
ON  
♦ R  
Matching Between Channels: 6Ω max  
ON  
♦ Charge Injection: 5pC max  
♦ Low 0.1nA Off Leakage Current  
♦ Small 20-Pin SSOP/SO/DIP Packages  
Pin Configurations/  
_______________Functional Diagrams  
The MAX4539/MAX4540 operate from a single +2.7V to  
+12V supply, or from dual supplies of 2.7V to 6V.  
On-resistance (100Ω max) is matched between switch-  
es to 6Ω max. Each switch can handle Rail-to-Rail®  
analog signals. The off leakage current is 0.1nA at  
T = +25°C and 2nA at T = +85°C.  
1
20  
19  
V+  
MAX4539  
R2  
LATCH  
EN  
3R  
LOGIC  
DECODER  
A
A
18  
17  
16  
CAL  
A0  
The MAX4539/MAX4540 are available in small 20-pin  
DIP, SO, and SSOP packages.  
A1  
Applications  
Avionics  
15  
A2  
Battery-Operated Equipment  
Data-Acquisition Systems  
Test Equipment  
5R  
R2  
Audio-Signal Routing  
Networking  
2
3
4
GND  
V-  
REFHI  
Ordering Information  
15R1  
4081R1  
PART  
TEMP. RANGE  
0°C to +70°C  
0°C to +70°C  
0°C to +70°C  
-40°C to +85°C  
-40°C to +85°C  
-40°C to +85°C  
0°C to +70°C  
0°C to +70°C  
0°C to +70°C  
-40°C to +85°C  
-40°C to +85°C  
-40°C to +85°C  
PIN-PACKAGE  
20 SSOP  
MAX4539CAP  
MAX4539CWP  
MAX4539CPP  
MAX4539EAP  
MAX4539EWP  
MAX4539EPP  
MAX4540CAP  
MAX4540CWP  
MAX4540CPP  
MAX4540EAP  
MAX4540EWP  
MAX4540EPP  
20 Wide SO  
20 Plastic DIP  
20 SSOP  
15R1  
20 Wide SO  
20 Plastic DIP  
20 SSOP  
4081R1  
5
REFLO  
COM  
6
7
8
9
14  
13  
12  
20 Wide SO  
20 Plastic DIP  
20 SSOP  
NO1  
NO2  
NO3  
NO8  
NO7  
NO6  
11  
10  
NO4  
NO5  
20 Wide SO  
20 Plastic DIP  
MAX4540 appears at end of data sheet.  
Rail-to-Rail is a registered trademark of Nippon Motorola, Ltd.  
________________________________________________________________ Maxim Integrated Products  
1
For free samples & the latest literature: http://www.maxim-ic.com, or phone 1-800-998-8800.  
For small orders, phone 1-800-835-8769.  
1234567...20

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