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MAX1284, MAX1285, MAX1285B
400ksps/300ksps、单电源、低功耗、串行12位ADC,内置电压基准


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概述
完整的数据资料 (PDF, 292kB)
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The MAX1284/MAX1285 12-bit analog-to-digital converters (ADCs) combine a high-bandwidth track/hold (T/H), a serial interface with high conversion speed, an internal +2.5V reference, and low power consumption. The MAX1284 operates from a single +4.5V to +5.5V supply; the MAX1285 operates from a single +2.7V to +3.6V supply.

The 3-wire serial interface connects directly to SPI™/QSPI™/MICROWIRE™ devices without external logic. The devices use an external serial-interface clock to perform successive-approximation analog-to-digital conversions.

Low power, ease of use, and small package size make these converters ideal for remote-sensor and data-acquisition applications or for other circuits with demanding power consumption and space requirements. The MAX1284/MAX1285 are available in 8-pin SO packages.

These devices are pin-compatible, higher-speed versions of the MAX1240/MAX1241; for more information, refer to the respective data sheets.

现备有评估板:  MAX1284EVC16, MAX1284EVKIT  

关键特性   应用/使用
  • Single-Supply Operation
    • +4.5V to +5.5V (MAX1284)
    • +2.7V to +3.6V (MAX1285)
  • ±1 LSB (max) DNL, ±1 LSB (max) INL
  • 400ksps Sampling Rate (MAX1284)
  • Internal Track/Hold
  • Internal +2.5V Reference
  • Low Power: 2.5mA (400ksps)
  • SPI/QSPI/MICROWIRE 3-Wire Serial Interface
  • Pin-Compatible, High-Speed Upgrades to MAX1240/MAX1241
  • 8-Pin SO Package

 
  • 电池供电应用
  • 数据采集
  • 医疗仪器
  • 笔输入量化器
  • 便携式数据记录
  • 过程控制

    Key Specifications:  Precision ADCs (< 5Msps)
    Part Number Resolution
    (bits)
    Input Chan. Conv. Rate
    (ksps)
    Conv. Time
    (µs)
    Data Bus
    (bits)
    Ref.
    (V)
    Diff. Inputs VSUPPLY
    (V)
    ICC
    (mA)
    Power
    (mW)
    Standby Mode Package/Pins Price
    ADC max typ typ See Notes
    MAX1284  12 1 400 2.5 Serial Int.+2.5 No 5 2.5 13.75 No
    SOIC(N)/8
    $4.85 @1k
    MAX1285  300
    3
    3.3
    SOIC(N)/8
    $4.85 @1k
    查看所有Precision ADCs (< 5Msps) (377)

    图表
    MAX1284、MAX1285、MAX1285B:典型工作电路
    典型工作电路

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    参考文献: 19-1687; Rev. 1; 2001-12-07
    本页最后一次更新: 2009-10-27


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