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参数资料
| 型号： | MAX5422EVKIT+ |
| 厂商： | Maxim Integrated Products |
| 文件页数： | 9/11页 |
| 文件大小： | 0K |
| 描述： | KIT EVLAUTION MAX5422/23/24 |
| 产品培训模块： | Lead (SnPb) Finish for COTS Obsolescence Mitigation Program |
| 标准包装： | 1 |
| 系列： | * |
Detailed Description
The MAX5422/MAX5423/MAX5424 contain a resistor
array with 255 resistive elements. The MAX5422 has a
total end-to-end resistance of 50k
Ω; the MAX5423 has
an end-to-end resistance of 100k
Ω; and the MAX5424
has an end-to-end resistance of 200k
Ω. The
MAX5422/MAX5423/MAX5424 allow access to the high,
low, and wiper terminals for a standard voltage-divider
configuration. H, L, and W can be connected in any
desired configuration as long as their voltages fall
between GND and VDD.
A simple, 3-wire, SPI serial interface moves the wiper
among the 256 tap points. The nonvolatile memory
stores the wiper position and recalls the stored wiper
position upon power-up. The nonvolatile memory is
guaranteed for 50 years for wiper data retention and up
to 200,000 wiper store cycles.
Analog Circuitry
The MAX5422/MAX5423/MAX5424 consist of a resistor
array with 255 resistive elements; 256 tap points are
accessible to the wiper, W, along the resistor string
between H and L. Select the wiper tap point by pro-
gramming the potentiometer through the 3-wire (SPI)
interface. Eight data bits, and a control byte program
the wiper position. The H and L terminals of the
MAX5422/MAX5423/MAX5424 are similar to the two
end terminals of a mechanical potentiometer. The
MAX5422/MAX5423/MAX5424 feature power-on reset
circuitry that loads the wiper position from the non-
volatile memory at power-up.
Digital Interface
The MAX5422/MAX5423/MAX5424 use a 3-wire, SPI-
compatible, serial data interface (Figure 1 and 2). This
write-only interface contains three inputs: chip-select
MAX5422/MAX5423/MAX5424
256-Tap, Nonvolatile, SPI-Interface,
Digital Potentiometers
_______________________________________________________________________________________
7
PIN
NAME
FUNCTION
1VDD
Power-Supply Input. Bypass VDD with a 0.1F capacitor from VDD to GND.
2
SCLK
Serial-Interface Clock Input
3
DIN
Serial-Interface Data Input
4
CS
Active-Low Digital-Input Chip Select
5
GND
Ground
6L
Low Terminal. The voltage at L can be greater than or less than the voltage at H. Current can flow into or
out of L.
7
W
Wiper Terminal
8H
High Terminal. The voltage at H can be greater than or less than the voltage at L. Current can flow into or
out of H.
—
EP
Exposed Pad. The exposed pad is not internally connected. Connect to GND or leave floating.
Pin Description
SCLK
CS
DIN
tCS0
tDS
tCL
tCH
tDH
tCP
tCSH
tCS1
tCSW
tCSS
Figure 1. Digital Interface and Timing Diagram
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相关代理商/技术参数 |
参数描述 |
|---|---|
| MAX5422EVKIT+ | 功能描述:其他开发工具 MAX5422 Eval Kit RoHS:否 制造商:Parallax 产品:ELEV-8 Hex Upgrade Kits 类型:Robotics 工具用于评估:ELEV-8 Quadcopter 工作电源电压: |
| MAX5423ETA | 制造商:Maxim Integrated Products 功能描述:256-TAP NONVOLATILE SPI-INTERFACE - Rail/Tube |
| MAX5423ETA+ | 制造商:Maxim Integrated Products 功能描述:DGTL POTENTIOMETER 256POS 100KOHM SGL 8TDFN EP - Rail/Tube 制造商:Maxim Integrated Products 功能描述:IC DPOT 256-TAP SPI 8TDFN-EP 制造商:Maxim Integrated Products 功能描述:IC, DPOT, 256-TAP, SPI, 8TDFN-EP |
| MAX5423ETA+T | 功能描述:数字电位计 IC 256-Tap Nonvolatile SPI-Interface RoHS:否 制造商:Maxim Integrated 电阻:200 Ohms 温度系数:35 PPM / C 容差:25 % POT 数量:Dual 每 POT 分接头:256 弧刷存储器:Volatile 缓冲刷: 数字接口:Serial (3-Wire, SPI) 描述/功能:Dual Volatile Low Voltage Linear Taper Digital Potentiometer 工作电源电压:1.7 V to 5.5 V 电源电流:27 uA 最大工作温度:+ 125 C 安装风格:SMD/SMT 封装 / 箱体:TQFN-16 封装:Reel |
| MAX5423ETA-T | 功能描述:数字电位计 IC RoHS:否 制造商:Maxim Integrated 电阻:200 Ohms 温度系数:35 PPM / C 容差:25 % POT 数量:Dual 每 POT 分接头:256 弧刷存储器:Volatile 缓冲刷: 数字接口:Serial (3-Wire, SPI) 描述/功能:Dual Volatile Low Voltage Linear Taper Digital Potentiometer 工作电源电压:1.7 V to 5.5 V 电源电流:27 uA 最大工作温度:+ 125 C 安装风格:SMD/SMT 封装 / 箱体:TQFN-16 封装:Reel |
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