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Maxim产品 - MAX1245介绍

MAX1245 - +2.375V、低功耗、8通道、串行12位ADC

MAX1245是Maxim美信半导体公司的一款数据转换器和采样-保持电路产品，MAX1245是+2.375V、低功耗、8通道、串行12位ADC，本站介绍了MAX1245的封装应用图解、特点和优点、功能等，并给出了与MAX1245相关的Maxim元器件型号供参考。

MAX1245 - +2.375V、低功耗、8通道、串行12位ADC - 数据转换器和采样-保持电路 - 可理想用于2.5V 12位系统 - 美信半导体

产品概述

The MAX1245 12-bit data-acquisition system combines an 8-channel multiplexer, high-bandwidth track/hold, and serial interface with high conversion speed and ultra-low power consumption. It operates from a single +2.375V to +3.3V supply, and its analog inputs are software configurable for unipolar/bipolar and single-ended/differential operation.

The 4-wire serial interface directly connects to SPI™, QSPI™, and MICROWIRE™ devices without external logic. A serial strobe output allows direct connection to TMS320-family digital signal processors. The MAX1245 works with an external reference, and uses either the internal clock or an external serial-interface clock to perform successive-approximation analog-to-digital conversions.

This device provides a hard-wired active-low SHDN pin and a software-selectable power-down, and can be programmed to automatically shut down at the end of a conversion. Accessing the serial interface powers up the MAX1245, and the quick turn-on time allows it to be shut down between conversions. This technique can cut supply current to under 10µA at reduced sampling rates.

The MAX1245 is available in a 20-pin DIP package and an SSOP that occupies 30% less area than an 8-pin DIP. For supply voltages from +2.7V to +5.25V, use the pin-compatible MAX147.

关键特性
  • 以下关键特性由Maxim美信半导体提供：
  • Single +2.375V to +3.3V Operation
  • 8-Channel Single-Ended or 4-Channel Differential Analog Inputs
  • Low Power:
  • 0.8mA (100ksps)
  • 10µA (1ksps)
  • 1µA (power-down mode)
  • Internal Track/Hold, 100kHz Sampling Rate
  • SPI/QSPI/MICROWIRE/TMS320-Compatible 4-Wire Serial Interface
  • Software-Configurable Unipolar or Bipolar Inputs
  • 20-Pin DIP/SSOP Packages
    • 热门应用
  • 电池供电应用
  • 数据采集
  • 医疗仪器
  • 便携式数据记录
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