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MAX5402

更新时间： 2024-09-16 14:58:11
品牌 Logo 应用领域
亚德诺 - ADI 电位器
页数 文件大小 规格书
9页 208K
描述
256抽头、μPoT?、低漂移数字电位器

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MAX5402 数据手册

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19-1896; Rev 0; 1/01  
256-Tap, µPoT, Low-Drift,  
Digital Potentiometer  
General Description  
Features  
o Small Footprint, 8-Pin µMAX Package  
o Ultra-Low 100nA Supply Current  
o +2.7V to +5.5V Single-Supply Operation  
o 256 Tap Positions  
The MAX5402 µPoT™ digital potentiometer is a 256-tap  
variable resistor with 10k total resistance in a tiny 8-  
pin µMAX package. This device functions as a mechan-  
ical potentiometer, consisting of a fixed resistor string  
with a digitally controlled wiper contact. It operates  
from +2.7V to +5.5V single-supply voltages and uses  
an ultra-low 0.1µA supply current. This device also pro-  
vides glitchless switching between resistor taps, as well  
as a convenient power-on reset (POR) that sets the  
wiper to the midscale position at power-up. A low  
5ppm/°C ratiometric temperature coefficient makes it  
ideal for applications requiring low drift.  
o Low Ratiometric Temperature Coefficient  
5ppm/°C  
o Low End-to-End Resistor Temperature Coefficient  
35ppm/°C  
o Power-On Reset: Wiper Goes to Midscale  
The MAX5402 serves well in applications requiring digi-  
tally controlled resistors, including adjustable voltage  
references and programmable gain amplifiers (PGAs).  
A nominal end-to-end resistor temperature coefficient of  
35ppm/°C makes this part suitable for use as a variable  
resistor in applications such as low-tempco adjustable  
gain and other circuit configurations. This device is  
guaranteed over the extended industrial temperature  
range (-40°C to +85°C).  
(Position 128)  
o Glitchless Switching Between the Resistor Taps  
o 3-Wire SPI™-Interface Compatible  
o 10k Resistor Value  
Ordering Information  
________________________Applications  
Mechanical Potentiometer Replacement  
TEMP.  
PIN-  
PACKAGE  
PART  
R (k )  
RANGE  
Low-Drift PGAs  
Adjustable Voltage References  
MAX5402EUA  
-40 C to +85 C  
8 µMAX  
10  
µPoT is a trademark of Maxim Integrated Products.  
SPI is a trademark of Motorola, Inc.  
Functional Diagram  
Pin Configuration  
V
DD  
TOP VIEW  
H
W
L
R
R
256  
8
8
8-BIT  
LATCH  
L
GND  
CS  
1
2
3
4
8
7
6
5
H
DECODE  
8-BIT  
SHIFT  
REGISTER  
W
DIN  
MAX5402  
V
DD  
MAX5402  
DIN  
SCLK  
SCLK  
CS  
POR  
CLOCK  
LOGIC  
MAX  
GND  
________________________________________________________________ Maxim Integrated Products  
1
For price, delivery, and to place orders, please contact Maxim Distribution at 1-888-629-4642,  
or visit Maxim’s website at www.maxim-ic.com.  
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