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Maxim产品 - MAX146介绍

MAX146 - +2.7V、低功耗、8通道、串行12位ADC

MAX146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，MAX146是+2.7V、低功耗、8通道、串行12位ADC，本站介绍了MAX146的封装应用图解、特点和优点、功能等，并给出了与MAX146相关的Maxim元器件型号供参考。

MAX146 - +2.7V、低功耗、8通道、串行12位ADC - 数据转换器和采样-保持电路 - Maxim美信半导体高性能芯片品质 - 美信半导体

产品概述

The MAX146/MAX147 12-bit data-acquisition systems combine an 8-channel multiplexer, high-bandwidth track/hold, and serial interface with high conversion speed and low power consumption. The MAX146 operates from a single +2.7V to +3.6V supply; the MAX147 operates from a single +2.7V to +5.25V supply. Both devices' analog inputs are software configurable for unipolar/bipolar and single-ended/differential operation.

The 4-wire serial interface connects directly to SPI™/ QSPI™ and MICROWIRE™ devices without external logic. A serial strobe output allows direct connection to TMS320-family digital signal processors. The MAX146/MAX147 use either the internal clock or an external serial-interface clock to perform successive-approximation analog-to-digital conversions.

The MAX146 has an internal 2.5V reference, while the MAX147 requires an external reference. Both parts have a reference-buffer amplifier with a ±1.5% voltage-adjustment range.

These devices provide a hard-wired SHDN-bar 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 automatically powers up the MAX146/MAX147, and the quick turn-on time allows them to be shut down between all conversions. This technique can cut supply current to under 60µA at reduced sampling rates.

The MAX146/MAX147 are available in 20-pin DIP and SSOP packages.

For 4-channel versions of these devices, see the MAX1246/MAX1247 data sheet.

关键特性
  • 以下关键特性由Maxim美信半导体提供：
  • 8-Channel Single-Ended or 4-Channel Differential Inputs
  • Single-Supply Operation
  • +2.7V to +3.6V (MAX146)
  • +2.7V to +5.25V (MAX147)
  • Internal 2.5V Reference (MAX146)
  • Low Power
  • 1.2mA (133ksps, 3V supply)
  • 54µA (1ksps, 3V supply)
  • 1µA (power-down mode)
  • 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
  • 笔输入量化器
  • 便携式数据记录
  • 过程控制
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