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单电源、低功耗、2通道、串行8位ADC

业内功耗最低的SOT23 ADC

产品详情

主要特征

Parametric specs for Precision ADCs (< 5Msps)
Resolution (bits) (ADC) 8
# Input Channels 2
Conv. Rate (ksps) (max) 100
Data Bus SPI
ADC Architecture SAR
Diff/S.E. Input S.E. Only
Internal VREF (V) (nominal) 2.048
Unipolar VIN (V) (max) 2.048
INL (±LSB) 1
Package/Pins SOT23/8
Budgetary
Price (See Notes)
1.16
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参量

Parametric specs for Precision ADCs (<u><</u> 5Msps)
Resolution (bits) (ADC) 8
# Input Channels 2
Conv. Rate (ksps) (max) 100
Data Bus SPI
ADC Architecture SAR
Diff/S.E. Input S.E. Only
Internal VREF (V) (nominal) 2.048
Unipolar VIN (V) (max) 2.048
INL (±LSB) 1
Package/Pins SOT23/8
Budgetary
Price (See Notes)
1.16

主要特征

  • Single Supply
    • +2.7V to +3.6V (MAX1117)
    • +2.7V to +5.5V (MAX1118)
    • +4.5V to +5.5V (MAX1119)
  • Internal Track/Hold: 100kHz Sampling Rate
  • Internal Reference
    • +2.048V (MAX1117)
    • +4.096V (MAX1119)
  • Reference Input Range: 0 to VDD (MAX1118)
  • SPI/QSPI/MICROWIRE-Compatible Serial Interface
  • Small 8-Pin SOT23 Package
  • Automatic Power-Down
  • Analog Input Range: 0 to VREF
  • Low Power
    • 175µA at 100ksps (typ) (MAX1117/MAX1119)
    • 135µA at 100ksps (typ) (MAX1118)
    • 18µA at 10ksps (typ)
    • 1µA (typ) in Power-Down Mode

应用/用途

  • 4mA至20mA供电远端数据采集系统
  • 电池供电测试设备
  • 低功耗、手持式便携设备
  • 接收信号强度指示
  • 太阳能供电远端系统
  • 系统诊断

描述

The MAX1117/MAX1118/MAX1119 low-power, 8-bit, dual-channel, analog-to-digital converters (ADCs) feature an internal track/hold (T/H) voltage reference (MAX1117/MAX1119), clock, and serial interface. The MAX1118 is specified from +2.7V to +5.5V and consumes only 135µA at 100ksps. The MAX1117 is specified from +2.7V to +3.6V, and the MAX1119 is specified from +4.5V to +5.5V, each consumes only 175µA at 100ksps.

The full-scale analog input range is determined by the internal reference of +2.048V (MAX1117) or +4.096V (MAX1119), or by an externally applied reference ranging from +1V to VDD (MAX1118). All devices feature an automatic shutdown mode that reduces supply current to < 1µA when the device is not in use. The 3-wire serial interface directly connects to SPI™, QSPI™, and MICROWIRE™ devices without external logic. Conversions up to 100ksps are performed using an internal clock.

The MAX1117/MAX1118/MAX1119 are available in an 8-pin SOT23 package with a footprint that is only 11% of an 8-pin plastic DIP.

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MAX1117、MAX1118、MAX1119:典型工作电路 MAX1117、MAX1118、MAX1119:典型工作电路 Zoom icon

Technical Docs

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Maxim的专业工程师团队也会为您解答相应的技术问题,请访问Maxim的 支持中心