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ADS1224 - 产品图解:
ADS1224-24 位、240SPS ADC,具有 4 通道差动输入 Mux、High-Z 缓冲器、串行输出
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TI产品 - ADS1224介绍
ADS1224 - 24 位、240SPS ADC,具有 4 通道差动输入 Mux、High-Z 缓冲器、串行输出

ADS1224是TI公司的一款精密ADC(<=10MSPS)产品,ADS1224是24 位、240SPS ADC,具有 4 通道差动输入 Mux、High-Z 缓冲器、串行输出,本页介绍了ADS1224的产品说明、应用、特性等,并给出了与ADS1224相关的TI元器件型号供参考。

ADS1224 - 24 位、240SPS ADC,具有 4 通道差动输入 Mux、High-Z 缓冲器、串行输出 - 精密ADC(<=10MSPS) - 模数转换器 - TI公司(Texas Instruments,德州仪器)

产品描述

The ADS1224 is a 4-channel, 24-bit, delta-sigma analog- to-digital (A/D) converter. It offers excellent performance and low power in a TSSOP-20 package. The ADS1224 is well-suited for demanding, high-resolution measurements, especially in portable systems and other space-saving and power-constrained applications.

A delta-sigma (ΔΣ) modulator and digital filter form the basis of the A/D converter. The analog modulator has a ±5V differential input range. An input multiplexer (MUX) is used to select between four separate differential input channels. A buffer can be selected to increase the input impedance of the measurement.

A simple, 2-wire serial interface provides all the necessary control. Data retrieval, self-calibration, and Standby mode are handled with a few simple waveforms. When only single conversions are needed, the ADS1224 can be quickly shut down (Standby mode) while idle between measurements to dramatically reduce the overall power consumption. Multiple ADS1224s can be connected together to create a synchronously sampling multichannel measurement system. The ADS1224 is designed to easily connect to microcontrollers, such as the MSP430.

The ADS1224 supports 2.7V to 5.5V analog supplies and 2.7V to 5.5V digital supplies. Power is typically less than 1mW in 3V operation and less than 1µW during Standby mode.

产品特性

  • 240SPS Data Rate with 4MHz Clock
  • 20-Bit Effective Resolution
  • Input Multiplexer with Four Differential Channels
  • Pin-Selectable, High-Impedance Input Buffer
  • ±5V Differential Input Range
  • 0.0003% INL (typ), 0.0015% INL (max)
  • Self-Calibrating
  • Simple 2-Wire Serial Interface
  • On-Chip Temperature Sensor
  • Single Conversions with Standby Mode
  • Low Current Consumption: 300µA
  • Analog Supply: 2.7V to 5.5V
  • Digital Supply: 2.7V to 5.5V
  • Applications
    • Hand-Held Instrumentation
    • Portable Medical Equipment
    • Industrial Process Control
    • Weigh Scales

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