MAXIM 化数字电位器MAX5481, MAX5482, MAX5483, MAX548 说明书
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MAX5481, MAX5482, MAX5483, MAX5484 10位、非易失、线性变化数字电位器 - 概述
http://china.maxim-ic.com/datasheet/index.mvp/id/4730[2010-08-31 8:31:40]
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Maxim > 产品 > 数字电位器(pot) > MAX5481, MAX5482, MAX5483, ...
MAX5481, MAX5482, MAX5483, MAX5484
10位、非易失、线性变化数字电位器
单路1024抽头数字电位器
概述 技术文档 定购信息 用户说明 (0) 所有内容
状况
状况：生产中。
概述
MAX5481–MAX5484是10位(1024抽头)非易失、线性变化、可编程分压器和可变
电阻器，能实现机械电位器的功能，但是采用可引脚配置的3线串行SPI™兼容接
口或增/减数字接口替代了机械装置。MAX5481/MAX5482是3端分压
器，MAX5483/MAX5484是2端可变电阻器。
MAX5481–MAX5484具有内部、非易失、电可擦除可编程只读存储器(EEPROM)，用于存储上电时滑动端的初始位
置。3线SPI兼容串行接口允许以高达7MHz的数据速率进行通信。还提供引脚可选的增/减数字接口。
MAX5481–MAX5484非常适合需要数字控制电位器的应用场合。用作分压器或可变电阻器时(参见完整数据资料中
的Selector Guide)，提供两种端到端电阻(10kΩ和50kΩ)。端到端标称电阻温度系数为35ppm/°C，而比例温度系数仅
为5ppm/°C，因此这些器件非常适用于那些要求低温度系数分压器的应用，例如低漂移、可编程增益放大器。
MAX5481–MAX5484可采用+2.7V至+5.25V单电源供电或±2.5V双电源供电。向非易失存储器写数据时，该系列器件消
耗400µA (最大值)电源电流，待机电源电流为1.0µA (最大值)。MAX5481–MAX5484采用节省空间的(3mm x
3mm)、16引脚TQFN或14引脚TSSOP封装，可工作在扩展级(-40°C至+85°C)温度范围。
关键特性 应用/使用
1024抽头位置
上电时从非易失性存储器中调出滑动端位置
16引脚(3mm x 3mm x 0.8mm) TQFN或14引脚TSSOP封装
35ppm/°C端到端电阻温度系数
5ppm/°C比例温度系数
10kΩ和50kΩ端到端电阻
通过引脚选择SPI兼容串行接口或增/减数字接口
1µA (最大)待机电流
+2.7V至+5.25V单电源供电
±2.5V双电源供电 增益与失调调节
LCD对比度调节
低漂移可编程增益放大器
替代机械电位器
压力传感器
Key Specifications: Digital Potentiometers
Part
NumberTaperPOTsControl
InterfaceWiper
MemoryStepsR
END-
TO-END
(kΩ)Res.
Tol.
(%)Temp.
Coeff.
(ppm/
°C)I
CC
@5V
(µA)Smallest
Available
Pckg.
(mm2
)Price
typmaxmax w/pinsSeeMAX5481, MAX5482, MAX5483, MAX5484 10位、非易失、线性变化数字电位器 - 概述
http://china.maxim-ic.com/datasheet/index.mvp/id/4730[2010-08-31 8:31:40]Notes
MAX5481
Linear13-Wire
Serial SPINon-
Volatile102410
253519.6$1.95
@1k
MAX5482 50$1.95
@1k
MAX5483 10$1.95
@1k
MAX5484 50$1.95
@1k
查看所有Digital Potentiometers (128)
引脚配置
相关产品
MAX5494,
MAX5495,
MAX5496, ...10位、双路、非易失、线性变化数字电位器
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查看所有Digital Potentiometers (128产品)MAX5481, MAX5482, MAX5483, MAX5484 10位、非易失、线性变化数字电位器 - 概述
http://china.maxim-ic.com/datasheet/index.mvp/id/4730[2010-08-31 8:31:40]
顶标MAX5481
顶标MAX5482
顶标MAX5483
顶标MAX5484
新品发布[ 2005-08-03 ]
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参考文献： 19-3708 Rev. 4; 2008-03-12
本页最后一次更新: 2008-03-27
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© 2010 Maxim Integrated Products版权所有General Description
The MAX5481–MAX5484 10-bit (1024-tap) nonvolatile,
linear-taper, programmable voltage-dividers and vari-
able resistors perform the function of a mechanical
potentiometer, but replace the mechanics with a pin-
configurable 3-wire serial SPI™-compatible interface or
up/down digital interface. The MAX5481/MAX5482 are
3-terminal voltage-dividers and the MAX5483/MAX5484
are 2-terminal variable resistors.
The MAX5481–MAX5484 feature an internal, non-
volatile, electrically erasable programmable read-only
memory (EEPROM) that stores the wiper position for ini-
tialization during power-up. The 3-wire SPI-compatible
serial interface allows communication at data rates up
to 7MHz. A pin-selectable up/down digital interface is
also available.
The MAX5481–MAX5484 are ideal for applications
requiring digitally controlled potentiometers. Two end-to-
end resistance values are available (10kΩand 50kΩ) in a
voltage-divider or a variable-resistor configuration (see
the Selector Guide). The nominal resistor temperature
coefficient is 35ppm/°C end-to-end, and only 5ppm/°C
ratiometric, making these devices ideal for applications
requiring low-temperature-coefficient voltage-dividers,
such as low-drift, programmable gain-amplifiers.
The MAX5481–MAX5484 operate with either a +2.7V to
+5.25V single power supply or ±2.5V dual power sup-
plies. These devices consume 400µA (max) of supply
current when writing data to the nonvolatile memory
and 1.0µA (max) of standby supply current. The
MAX5481–MAX5484 are available in a space-saving
(3mm x 3mm), 16-pin TQFN, or a 14-pin TSSOP pack-
age and are specified over the extended (-40°C to+85°C) temperature range.
ApplicationsFeatures
♦1024 Tap Positions
♦Power-On Recall of Wiper Position from
Nonvolatile Memory
♦16-Pin (3mm x 3mm x 0.8mm) TQFN or 14-Pin
TSSOP Package
♦35ppm/°C End-to-End Resistance Temperature
Coefficient
♦5ppm/°C Ratiometric Temperature Coefficient
♦10kΩand 50kΩEnd-to-End Resistor Values
♦Pin-Selectable SPI-Compatible Serial Interface or
Up/Down Digital Interface
♦1µA (max) Standby Current
♦Single +2.7V to +5.25V Supply Operation
♦Dual ±2.5V Supply Operation
MAX5481–MAX548410-Bit, Nonvolatile, Linear-Taper Digital
Potentiometers
________________________________________________________________Maxim Integrated Products
1Ordering Information
16
151413
V
SSN.C.V
DDGND9101112SPI/UD
DIN(U/D)
SCLK(INC)
CS
4321
N.C.LWH5
+
+**EP
*EP678
N.C.N.C.N.C.V
SSINTERFACETOP VIEW
TQFN
*SEE FUNCTIONAL DIAGRAM
**CONNECT EXPOSED PAD TO V
SS
*CONNECT EXPOSED PAD TO V
SS16151413
V
SSN.C.V
DDGND9101112SPI/UD
DIN(U/D)
SCLK(INC)
