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单电源、低功耗、2通道、串行8位ADC

功耗最低的8位、串行接口、双通道ADC,内置基准

产品详情

The MAX1108/MAX1109 low-power, 8-bit, dual-channel, analog-to-digital converters (ADCs) feature an internal track/hold (T/H) voltage reference, clock, and serial interface. The MAX1108 is specified from +2.7V to +3.6V and consumes only 105µA. The MAX1109 is specified from +4.5V to +5.5V and consumes only 130µA. The analog inputs are software configurable, allowing unipolar/bipolar and single-ended/differential operation; battery monitoring capability is also included.

The full-scale analog input range is determined by the internal reference of +2.048V (MAX1108) or +4.096V (MAX1109), or by an externally applied reference ranging from 1V to VDD. The MAX1108/MAX1109 also feature a software power-down mode that reduces power consumption to 0.5µA when the device is not in use. The 4-wire serial interface directly connects to SPI™, QSPI™, and MICROWIRE™ devices without external logic. Conversions up to 50ksps are performed using either the internal clock or an external serial-interface clock.

The MAX1108 and MAX1109 are available in a 10-pin µMAX package with a footprint that is just 20% of an 8-pin plastic DIP.

主要特征

  • Single Supply:
    • +2.7V to +3.6V (MAX1108)
    • +4.5V to +5.5V (MAX1109)
  • Low Power:
    • 105µA at +3V and 50ksps
    • 0.5µA in Power-Down Mode
  • Software-Configurable Unipolar or Bipolar Inputs
  • Input Voltage Range: 0 to VDD
  • Internal Track/Hold
  • Internal Reference:
    • +2.048V (MAX1108)
    • +4.096V (MAX1109)
  • Reference Input Range: 1V to VDD
  • SPI/QSPI/MICROWIRE-Compatible Serial Interface
  • VDD Monitoring Mode
  • Small 10-Pin µMAX Package

应用/用途

  • 4mA至20mA供电远端系统
  • 手持式测量设备
  • 医疗仪器
  • 便携式数据记录
  • 接收信号强度指示
  • 太阳能供电远端系统
  • 系统诊断
Parametric specs for Precision ADCs (< 5Msps)
Resolution (bits) (ADC) 8
# Input Channels 2
Conv. Rate (ksps) (max) 50
Data Bus SPI
ADC Architecture SAR
Diff/S.E. Input Both
Internal VREF (V) (nominal) 2.048
External VREF (V) (min) 1
External VREF (V) (max) 5.5
Unipolar VIN (V) (max) 2.048
Bipolar VIN (±V) (max) 1.024
INL (±LSB) 0.2
Package/Pins UMAX/10
Budgetary
Price (See Notes)
$2.35 @1k
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简化框图

MAX1108、MAX1109:典型工作电路 MAX1108、MAX1109典型工作电路 Zoom icon

技术文档

设计与质量

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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) 50
Data Bus SPI
ADC Architecture SAR
Diff/S.E. Input Both
Internal VREF (V) (nominal) 2.048
External VREF (V) (min) 1
External VREF (V) (max) 5.5
Unipolar VIN (V) (max) 2.048
Bipolar VIN (±V) (max) 1.024
INL (±LSB) 0.2
Package/Pins UMAX/10
Budgetary
Price (See Notes)
$2.35 @1k

主要特征

  • Single Supply:
    • +2.7V to +3.6V (MAX1108)
    • +4.5V to +5.5V (MAX1109)
  • Low Power:
    • 105µA at +3V and 50ksps
    • 0.5µA in Power-Down Mode
  • Software-Configurable Unipolar or Bipolar Inputs
  • Input Voltage Range: 0 to VDD
  • Internal Track/Hold
  • Internal Reference:
    • +2.048V (MAX1108)
    • +4.096V (MAX1109)
  • Reference Input Range: 1V to VDD
  • SPI/QSPI/MICROWIRE-Compatible Serial Interface
  • VDD Monitoring Mode
  • Small 10-Pin µMAX Package

应用/用途

  • 4mA至20mA供电远端系统
  • 手持式测量设备
  • 医疗仪器
  • 便携式数据记录
  • 接收信号强度指示
  • 太阳能供电远端系统
  • 系统诊断

描述

The MAX1108/MAX1109 low-power, 8-bit, dual-channel, analog-to-digital converters (ADCs) feature an internal track/hold (T/H) voltage reference, clock, and serial interface. The MAX1108 is specified from +2.7V to +3.6V and consumes only 105µA. The MAX1109 is specified from +4.5V to +5.5V and consumes only 130µA. The analog inputs are software configurable, allowing unipolar/bipolar and single-ended/differential operation; battery monitoring capability is also included.

The full-scale analog input range is determined by the internal reference of +2.048V (MAX1108) or +4.096V (MAX1109), or by an externally applied reference ranging from 1V to VDD. The MAX1108/MAX1109 also feature a software power-down mode that reduces power consumption to 0.5µA when the device is not in use. The 4-wire serial interface directly connects to SPI™, QSPI™, and MICROWIRE™ devices without external logic. Conversions up to 50ksps are performed using either the internal clock or an external serial-interface clock.

The MAX1108 and MAX1109 are available in a 10-pin µMAX package with a footprint that is just 20% of an 8-pin plastic DIP.

简化框图

MAX1108、MAX1109:典型工作电路 MAX1108、MAX1109典型工作电路 Zoom icon

技术文档

支持和培训

在Maxim的知识库中搜索您所需的答案。

过滤搜索

Maxim专业的应用工程师团队也可以为您解答技术问题,请 访问Maxim的 支持中心