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參數資料
| 型號： | MAX5422ETA |
| 廠商： | MAXIM INTEGRATED PRODUCTS INC |
| 元件分類： | 數字電位計 |
| 英文描述： | 256-Tap, Nonvolatile, I2C-Interface, Digital Potentiometers |
| 中文描述： | 50K DIGITAL POTENTIOMETER, 3-WIRE SERIAL CONTROL INTERFACE, 256 POSITIONS, DSO8 |
| 封裝： | 3 X 3 MM, 0.8 MM HEIGHT, MO229/WEEC, TDFN-8 |
| 文件頁數： | 1/11頁 |
| 文件大?。?/td> | 614K |
| 代理商： | MAX5422ETA |
General Description
The MAX5422/MAX5423/MAX5424 nonvolatile, linear-
taper, digital potentiometers perform the function of a
mechanical potentiometer, but replace the mechanics
with a simple 3-wire SPI-compatible digital interface.
Each device performs the same function as a discrete
potentiometer or variable resistor and has 256 tap points.
The devices feature an internal, nonvolatile EEPROM
used to store the wiper position for initialization during
power-up. The 3-wire SPI-compatible serial interface
allows communication at data rates up to 5MHz, mini-
mizing board space and reducing interconnection com-
plexity in many applications.
The MAX5422/MAX5423/MAX5424 provide three nomi-
nal resistance values: 50k
(MAX5422), 100k
(MAX5423), or 200k
(MAX5424). The nominal resistor
temperature coefficient is 35ppm/°C end-to-end and
only 5ppm/°C ratiometric. This makes the devices ideal
for applications requiring a low-temperature-coefficient
variable resistor, such as low-drift, programmable gain-
amplifier circuit configurations.
The MAX5422/MAX5423/MAX5424 are available in a
3mm x 3mm 8-pin TDFN package, and are specified
over the extended -40°C to +85°C temperature range.
Applications
Mechanical Potentiometer Replacement
Low-Drift Programmable Gain Amplifiers
Audio Volume Control
Liquid-Crystal Display (LCD) Contrast Control
Low-Drift Programmable Filters
Functional Diagram
Features
o
Wiper Position Stored in Nonvolatile Memory
(EEPROM) and Recalled Upon Power-Up or
Interface Command
o
3mm x 3mm x 0.8mm TDFN Package
o
35ppm/°C End-to-End Resistance Temperature
Coefficient
o
5ppm/°C Ratiometric Temperature Coefficient
o
50k
, 100k
, and 200k
Resistor Values
o
5MHz SPI-Compatible Serial Interface
o
500nA (typ) Static Supply Current
o
Single-Supply Operation: +2.7V to +5.25V
o
256 Tap Positions
o
±0.5 LSB DNL in Voltage-Divider Mode
o
±0.5 LSB INL in Voltage-Divider Mode
M
256-Tap, Nonvolatile, SPI-Interface,
Digital Potentiometers
________________________________________________________________
Maxim Integrated Products
For pricing, delivery, and ordering information, please contact Maxim/Dallas Direct! at
1-888-629-4642, or visit Maxim’s website at www.maxim-ic.com.
1
Ordering Information/Selector Guide
19-3371; Rev 0; 7/04
PART
TEMP RANGE
END-TO-END
RESISTANCE (k
)
PIN-PACKAGE
TOP MARK
MAX5422
ETA
MAX5423
ETA
MAX5424
ETA
*
EP = Exposed pad.
-40
°
C to +85
°
C
-40
°
C to +85
°
C
-40
°
C to +85
°
C
50
100
200
8 TDFN-EP*
8 TDFN-EP*
8 TDFN-EP*
AIJ
AII
AIH
V
DD
SCLK
DIN
GND
1
2
3
4
5
W
H
6
7
8
L
TDFN (3mm x 3mm)
TOP VIEW
CS
MAX5422
MAX5423
MAX5424
Pin Configuration
W
L
SPI
INTERFACE
256-
POSITION
DECODER
V
DD
GND
SCLK
8-BIT
NV
MEMORY
8-BIT
LATCH
8-BIT
SHIFT
REGISTER
POR
H
8
8
256
DIN
CS
MAX5422
MAX5423
MAX5424
SPI is a trademark of Motorola, Inc.
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相關代理商/技術參數 |
參數描述 |
|---|---|
| MAX5422ETA+ | 制造商:Maxim Integrated Products 功能描述:DGTL POTENTIOMETER 256POS 50KOHM SGL 8TDFN EP - Rail/Tube |
| MAX5422ETA+T | 功能描述:數字電位計 IC 256-Tap Nonvolatile SPI-Interface RoHS:否 制造商:Maxim Integrated 電阻:200 Ohms 溫度系數:35 PPM / C 容差:25 % POT 數量:Dual 每 POT 分接頭:256 弧刷存儲器:Volatile 緩沖刷: 數字接口:Serial (3-Wire, SPI) 描述/功能:Dual Volatile Low Voltage Linear Taper Digital Potentiometer 工作電源電壓:1.7 V to 5.5 V 電源電流:27 uA 最大工作溫度:+ 125 C 安裝風格:SMD/SMT 封裝 / 箱體:TQFN-16 封裝:Reel |
| MAX5422ETA-T | 功能描述:數字電位計 IC RoHS:否 制造商:Maxim Integrated 電阻:200 Ohms 溫度系數:35 PPM / C 容差:25 % POT 數量:Dual 每 POT 分接頭:256 弧刷存儲器:Volatile 緩沖刷: 數字接口:Serial (3-Wire, SPI) 描述/功能:Dual Volatile Low Voltage Linear Taper Digital Potentiometer 工作電源電壓:1.7 V to 5.5 V 電源電流:27 uA 最大工作溫度:+ 125 C 安裝風格:SMD/SMT 封裝 / 箱體:TQFN-16 封裝:Reel |
| MAX5422EVKIT | 功能描述:數字電位計 IC RoHS:否 制造商:Maxim Integrated 電阻:200 Ohms 溫度系數:35 PPM / C 容差:25 % POT 數量:Dual 每 POT 分接頭:256 弧刷存儲器:Volatile 緩沖刷: 數字接口:Serial (3-Wire, SPI) 描述/功能:Dual Volatile Low Voltage Linear Taper Digital Potentiometer 工作電源電壓:1.7 V to 5.5 V 電源電流:27 uA 最大工作溫度:+ 125 C 安裝風格:SMD/SMT 封裝 / 箱體:TQFN-16 封裝:Reel |
| MAX5422EVKIT+ | 功能描述:其他開發工具 MAX5422 Eval Kit RoHS:否 制造商:Parallax 產品:ELEV-8 Hex Upgrade Kits 類型:Robotics 工具用于評估:ELEV-8 Quadcopter 工作電源電壓: |
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