单电源、低功耗、串行8位ADC

 

器件号	Replacement	Explanation

说明

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The MAX1115/MAX1116 low-power, 8-bit, analog-to-digital converters (ADCs) feature an internal track/hold (T/H), voltage reference, V_DD monitor, clock, and serial interface. The MAX1115 is specified from +2.7V to +5.5V, and the MAX1116 is specified from +4.5V to +5.5V. Both parts consume only 175µA at 100ksps.

The full-scale analog input range is determined by the internal reference of +2.048V (MAX1115) or +4.096V (MAX1116). The MAX1115/MAX1116 also feature AutoShutdown™ power-down mode which reduces power consumption 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 MAX1115/MAX1116 are available in an 8-pin SOT23 package with a footprint that is just 30% of an 8-pin SO.

MAX1115、MAX1116：典型工作电路 放大+

关键特性

• Single Supply
  • +2.7V to +3.6V (MAX1115)
  • +4.5V to +5.5V (MAX1116)
• Input Voltage Range: 0 to V_REF
• Internal Track/Hold; 100kHz Sampling Rate
• Internal Reference
  • +2.048V (MAX1115)
  • +4.096V (MAX1116)
• SPI/QSPI/MICROWIRE-Compatible Serial Interface
• Small 8-Pin SOT23 Package
• Automatic Power-Down
• Low Power
  • 175µA at 100ksps
  • 18µA at +3V and 10ksps
  • 1µA in Power-Down Mode

应用

• 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
• 系统诊断