MAX188 - 低功耗、8通道、串行12位ADC

MAX188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，MAX188是低功耗、8通道、串行12位ADC，本站介绍了MAX188的封装应用图解、特点和优点、功能等，并给出了与MAX188相关的Maxim元器件型号供参考。

MAX188 - 低功耗、8通道、串行12位ADC - 数据转换器和采样-保持电路 - 对于3V应用，请参考MAX146和MAX1246 - 美信半导体

产品概述

The MAX186/MAX188 are 12-bit data-acquisition systems that combine an 8-channel multiplexer, high-bandwidth track/hold, and serial interface together with high conversion speed and ultra-low power consumption. The devices operate with a single +5V supply or dual ±5V supplies. The 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 MAX186/MAX188 use either the internal clock or an external serial-interface clock to perform successive-approximation A/D conversions. The serial interface can operate beyond 4MHz when the internal clock is used.

The MAX186 has an internal 4.096V reference while the MAX188 requires an external reference. Both parts have a reference-buffer amplifier that simplifies gain trim.

The MAX186/MAX188 provide a hard-wired active-low SHDN pin and two software-selectable power-down modes. Accessing the serial interface automatically powers up the devices, and the quick turn-on time allows the MAX186/MAX188 to be shut down between every conversion. Using this technique of powering down between conversions, supply current can be cut to under 10µA at reduced sampling rates.

The MAX186/MAX188 are available in 20-pin PDIP and SO packages, and in a shrink small-outline package (SSOP), that occupies 30% less area than an 8-pin PDIP. For applications that call for a parallel interface, see the MAX180/MAX181 data sheet. For anti-aliasing filters, consult the MAX274/MAX275 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 +5V or ±5V Operation

Low Power:

1.5mA (Operating Mode)

2µA (Power-Down Mode)

Internal Track/Hold, 133kHz Sampling Rate

Internal 4.096V Reference (MAX186)

SPI-/QSPI-/MICROWIRE-/TMS320-Compatible 4-Wire Serial Interface

Software-Configurable Unipolar or Bipolar Inputs

20-Pin PDIP, SO, SSOP Packages

Evaluation Kit Available

热门应用

自动测试设备(ATE)

电池供电应用

数据采集

高精度过程控制

医疗仪器

便携式数据记录

机器人技术

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