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MAX110, MAX111
低成本、2通道、±14位串行ADC


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概述
完整的数据资料 (PDF, 424kB)
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The MAX110/MAX111 analog-to-digital converters (ADCs) use an internal auto-calibration technique to achieve 14-bit resolution plus overrange, with no external components. Operating supply current is only 550µA (MAX110) and reduces to 4µA in power-down mode, making these ADCs ideal for high-resolution battery-powered or remote-sensing applications. A fast serial interface simplifies signal routing and opto-isolation, saves microcontroller pins, and offers compatibility with SPI™, QSPI™, and MICROWIRE™. The MAX110 operates with ±5V supplies, and converts differential analog signals in the -3V to +3V range. The MAX111 operates with a single +5V supply and converts differential analog signals in the ±1.5V range, or single-ended signals in the 0V to +1.5V range.

Internal calibration allows for both offset and gain-error correction under microprocessor (µP) control. Both devices are available in space-saving 16-pin DIP and SO packages, as well as an even smaller 20-pin SSOP package.

关键特性   应用/使用
  • Single +5V Supply (MAX111)
  • Two Differential Input Channels
  • 14-Bit Resolution Plus Sign and Overrange
  • 0.03% Linearity (MAX110)
    0.05% Linearity (MAX111)
  • Low Power Consumption:
    • 550µA (MAX110)
    • 640µA (MAX111)
    • 4µA Shutdown Current
  • Up to 50 Conversions/sec
  • 50Hz/60Hz Rejection
  • Auto-Calibration Mode
  • No External Components Required
  • 16-Pin DIP/SO, 20-Pin SSOP

 
  • 数据采集
  • 面板表
  • 过程控制
  • 温度测量
  • 称重仪

    Key Specifications:   Precision ADCs (< 5Msps)
    Part Number ADC Resolution (Bits) Input Channels Conv. Rate (ksps) Max. Conv. Time (µs) Data Bus (Bits) Ref. (V) Input Range (V) Diff. In Supply Voltage (V) Typ. Supply Current (mA) Typ. Power (mW) Standby Mode Package Price**
    MAX110  14 2 0.05 20480 Serial Ext. ±3 Yes -5
    5
    0.55 4.35 Yes CDIP(N)/16
    PDIP(N)/16
    SOIC(W)/16
    SSOP/20
    $4.80 @ 1k
    MAX111  ±1.5
    1.5
    5 0.64 3.2 $4.80 @ 1k
    See All Precision ADCs (< 5Msps) (375)
    Notes:
    **This pricing is BUDGETARY, for comparing similar parts. Prices are in U.S. dollars and subject to change. Quantity pricing may vary substantially and international prices may differ due to local duties, taxes, fees, and exchange rates. For volume-specific prices and delivery, please see the price and availability page or contact an authorized distributor.

    图表
    MAX110、MAX111:典型工作电路
    典型工作电路

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    参考文献: 19-0283; Rev. 5; 1998-11-01
    本页最后一次更新: 2007-07-17


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