Texas Instruments ADS7042 超低功耗 SAR 模数转换器(ADC)

德州仪器 ADS7042 超低功耗 SAR 模数转换器(ADC)是 12 位、1MSPS ADC,它支持宽幅模拟输入电压范围(1.8V 到 3.6V),并包含一个带固有采样保持电路的电容式、逐次逼近寄存器(SAR)的 ADC。SPI 兼容串行接口通过 CS 和 SCLK 信号进行控制。输入信号随 CS 下降沿一起得到采样,而 SCLK 用于转换和串行数据输出。该器件支持宽幅数字电源范围(1.65V 到 3.6V),从而实现与多种主控制器的连接。对于普通 DVDD 范围(1.65V 到 1.95V),ADS7042 遵循 JESD8-7A 标准。

特性

  • SAR ADC with Nanowatt Power Consumption
    • 234µW at 1MSPS with 1.8V AVDD
    • 690µW at 1MSPS with 3V AVDD
    • 69µW at 100kSPS with 3V AVDD
    • Less than 1µW at 1kSPS with 3V AVDD
  • Small SAR ADC
    • X2QFN-8 Package with 2.25mm2 Footprint
  • 1MSPS Throughput with Zero Data Latency
  • Wide Operating Range
    • 1.8V to 3.6V AVDD
    • 1.65V to 3.6V (Independent of AVDD) DVDD
    • -40°C to +125°C Temperature Range
  • Excellent Performance
    • 12-Bit Resolution with NMC
    • ±1LSB (Max) DNL and INL
    • 70dB SNR with 3V AVDD
    • -80dB THD with 3V AVDD
    • 0V to AVDD Unipolar Input Range
    • Integrated Offset Calibration
    • 16MHz SPI™-Compatible Serial Interface
    • JESD8-7A Compliant Digital I/O

应用

  • Low-Power Data Acquisition
  • Battery-Powered Handheld Equipment
  • Level Sensors
  • Ultrasonic Flow Meters
  • Motor Control
  • Wearable Fitness
  • Portable Medical Equipment
  • Hard Drives
  • Glucose Meters

Block Diagram

框图 - Texas Instruments ADS7042 超低功耗 SAR 模数转换器(ADC)
发布日期: 2014-09-16 | 更新日期: 2022-03-11