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

产品详情

主要特征

应用/用途

Parametric specs for Precision ADCs (< 5Msps)
Resolution (bits) (ADC) 12
# Input Channels 1
Conv. Rate (ksps) (max) 400
Data Bus SPI
ADC Architecture SAR
Diff/S.E. Input S.E. Only
Internal VREF (V) (nominal) 2.5
Unipolar VIN (V) (max) 2.5
INL (±LSB) 1
Package/Pins SOIC (N)/8
Budgetary
Price (See Notes)
9.25
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参量

Parametric specs for Precision ADCs (<u><</u> 5Msps)
Resolution (bits) (ADC) 12
# Input Channels 1
Conv. Rate (ksps) (max) 400
Data Bus SPI
ADC Architecture SAR
Diff/S.E. Input S.E. Only
Internal VREF (V) (nominal) 2.5
Unipolar VIN (V) (max) 2.5
INL (±LSB) 1
Package/Pins SOIC (N)/8
Budgetary
Price (See Notes)
9.25

主要特征

  • 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

应用/用途

  • 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

描述

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.

简化框图

MAX1284、MAX1285、MAX1285B:典型工作电路 MAX1284、MAX1285、MAX1285B:典型工作电路 Zoom icon

技术文档

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在Maxim的知识库中搜索技术问题的答案

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