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  • 參數(shù)資料
    型號: MAX5477ETE#TG16
    廠商: Maxim Integrated Products
    文件頁數(shù): 1/16頁
    文件大?。?/td> 0K
    描述: IC POT DGTL DUAL 256-TAP 16-TQFN
    產(chǎn)品培訓(xùn)模塊: Lead (SnPb) Finish for COTS
    Obsolescence Mitigation Program
    標(biāo)準(zhǔn)包裝: 2,500
    接片: 256
    電阻(歐姆): 10k
    電路數(shù): 2
    溫度系數(shù): 標(biāo)準(zhǔn)值 70 ppm/°C
    存儲器類型: 非易失
    接口: I²C(設(shè)備位址)
    電源電壓: 2.7 V ~ 5.25 V
    工作溫度: -40°C ~ 85°C
    安裝類型: 表面貼裝
    封裝/外殼: 16-WFQFN 裸露焊盤
    供應(yīng)商設(shè)備封裝: 16-TQFN(3x3)
    包裝: 帶卷 (TR)
    General Description
    The MAX5477/MAX5478/MAX5479 nonvolatile, dual,
    linear-taper, digital potentiometers perform the function
    of a mechanical potentiometer, but replace the
    mechanics with a simple 2-wire digital interface. Each
    device performs the same function as a discrete poten-
    tiometer 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. A write-protect feature prevents accidental
    overwrites of the EEPROM. The fast-mode I2C-compati-
    ble serial interface allows communication at data rates
    up to 400kbps, minimizing board space and reducing
    interconnection complexity in many applications. Three
    address inputs allow a total of eight unique address
    combinations.
    The MAX5477/MAX5478/MAX5479 provide three nomi-
    nal resistance values: 10k
    (MAX5477), 50k
    (MAX5478), or 100k
    (MAX5479). The nominal resistor
    temperature coefficient is 70ppm/°C end-to-end and
    10ppm/°C ratiometric. The low temperature coefficient
    makes the devices ideal for applications requiring a low-
    temperature-coefficient variable resistor, such as low-
    drift, programmable gain-amplifier circuit configurations.
    The MAX5477/MAX5478/MAX5479 are available in 16-
    pin 3mm x 3mm x 0.8mm TQFN and 14-pin 4.4mm x
    5mm TSSOP packages. These devices operate over
    the extended -40°C to +85°C temperature range.
    Applications
    Mechanical Potentiometer Replacement
    Low-Drift Programmable-Gain Amplifiers
    Volume Control
    Liquid-Crystal Display (LCD) Contrast Control
    Features
    o Power-On Recall of Wiper Position from
    Nonvolatile Memory
    o EEPROM Write Protection
    o Tiny 3mm x 3mm x 0.8mm Thin QFN Package
    o 70ppm/°C End-to-End Resistance Temperature
    Coefficient
    o 10ppm/°C Ratiometric Temperature Coefficient
    o Fast 400kbps I2C-Compatible Serial Interface
    o 1A (max) Static Supply Current
    o Single-Supply Operation: +2.7V to +5.25V
    o 256 Tap Positions per Potentiometer
    o ±0.5 LSB DNL in Voltage-Divider Mode
    o ±1 LSB INL in Voltage-Divider Mode
    MAX5477/MAX5478/MAX5479
    Dual, 256-Tap, Nonvolatile,
    I2C-Interface, Digital Potentiometers
    ________________________________________________________________
    Maxim Integrated Products
    1
    19-3379; Rev 5; 11/11
    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.
    Pin Configurations appear at end of data sheet.
    EVALUATION
    KIT
    AVAILABLE
    Ordering Information/Selector Guide
    PART
    TEMP RANGE
    PIN-PACKAGE
    END-TO-END
    RESISTANCE (k )
    TOP MARK
    MAX5477ETE+T
    -40°C to +85°C
    16 TQFN-EP*
    10
    ABO
    MAX5477EUD+
    -40°C to +85°C
    14 TSSOP
    10
    MAX5478ETE+T
    -40°C to +85°C
    16 TQFN-EP*
    50
    ABP
    MAX5478EUD+
    -40°C to +85°C
    14 TSSOP
    50
    MAX5479ETE+T
    -40°C to +85°C
    16 TQFN-EP*
    100
    ABQ
    MAX5479EUD+
    -40°C to +85°C
    14 TSSOP
    100
    +
    Denotes a lead(Pb)-free/RoHS-compliant package.
    T = Tape and reel.
    *
    EP = Exposed pad.
    Functional Diagram
    MAX5477
    MAX5478
    MAX5479
    8-BIT
    SHIFT
    REGISTER
    POR
    16-BIT
    LATCH
    16-BIT
    NV
    MEMORY
    SDA
    SCL
    WP
    A0
    A1
    A2
    8
    256
    POSITION
    DECODER
    8
    256
    POSITION
    DECODER
    256
    HA
    WA
    LA
    HB
    WB
    LB
    VDD
    GND
    I
    2C
    INTERFACE
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    相關(guān)代理商/技術(shù)參數(shù)
    參數(shù)描述
    MAX5477EUD 制造商:Maxim Integrated Products 功能描述:DUAL, 256-TAP, NONVOLATILE, I2C-INTERFACE, DI - Rail/Tube
    MAX5477EUD+ 功能描述:數(shù)字電位計 IC Dual 256-Tap NV I2C-Interface RoHS:否 制造商:Maxim Integrated 電阻:200 Ohms 溫度系數(shù):35 PPM / C 容差:25 % POT 數(shù)量:Dual 每 POT 分接頭:256 弧刷存儲器:Volatile 緩沖刷: 數(shù)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(fēng)格:SMD/SMT 封裝 / 箱體:TQFN-16 封裝:Reel
    MAX5477EUD+T 功能描述:數(shù)字電位計 IC Dual 256-Tap NV I2C-Interface RoHS:否 制造商:Maxim Integrated 電阻:200 Ohms 溫度系數(shù):35 PPM / C 容差:25 % POT 數(shù)量:Dual 每 POT 分接頭:256 弧刷存儲器:Volatile 緩沖刷: 數(shù)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(fēng)格:SMD/SMT 封裝 / 箱體:TQFN-16 封裝:Reel
    MAX5477EUD-T 制造商:Maxim Integrated Products 功能描述:DUAL, 256-TAP, NONVOLATILE, I2C-INTERFACE, DI - Tape and Reel
    MAX5478ETD 制造商:Maxim Integrated Products 功能描述:DUAL, 256-TAP, NONVOLATILE, I2C-INTERFACE, DI - Rail/Tube