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ADS7884 - 产品图解:
ADS7884-2.7V-5.5V 10 位 3MSPS 串行 ADC
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TI产品 - ADS7884介绍
ADS7884 - 2.7V-5.5V 10 位 3MSPS 串行 ADC

ADS7884是TI公司的一款精密ADC(<=10MSPS)产品,ADS7884是2.7V-5.5V 10 位 3MSPS 串行 ADC,本页介绍了ADS7884的产品说明、应用、特性等,并给出了与ADS7884相关的TI元器件型号供参考。

ADS7884 - 2.7V-5.5V 10 位 3MSPS 串行 ADC - 精密ADC(<=10MSPS) - 模数转换器 - TI公司(Texas Instruments,德州仪器)

产品描述

The ADS7884 is a 10-bit, 3-MSPS analog-to-digital converter (ADC), and the ADS7885 is a 8-bit, 3-MSPS ADC. The devices include a capacitor based SAR A/D converter with inherent sample and hold. The serial interface in each device is controlled by the CS and SCLK signals for glueless connections with microprocessors and DSPs. The input signal is sampled with the falling edge of CS, and SCLK is used for conversion and serial data output.

The devices operate from a wide supply range from 2.7 V to 5.5 V. The low power consumption of the devices make them suitable for battery-powered applications. The devices also include a power saving powerdown feature for when the devices are operated at lower conversion speeds.

The high level of the digital input to the device is not limited to device VDD. This means the digital input can go as high as 5.5 V when device supply is 2.7 V. This feature is useful when digital signals are coming from other circuit with different supply levels. Also this relaxes restriction on power up sequencing.

The ADS7884 and ADS7885 are available in a 6-pin SOT23 package and are specified for operation from -40°C to 125°C.

产品特性

  • 3-MHz Sample Rate Serial Device
  • 10-Bit Resolution — ADS7884
  • 8-Bit Resolution — ADS7885
  • Zero Latency
  • 48-MHz Serial Interface
  • Supply Range: 2.7 V to 5.5 V
  • Low Power Dissipation:
    • 6.8 mW at 3-V VDD, 2.5 MSPS
    • 15 mw at 5-V VDD, 3 MSPS
  • ±0.3 LSB INL, ±0.3 LSB DNL — ADS7884
  • ±0.15 LSB INL, ±0.1 LSB DNL — ADS7885
  • 61.7 dB SINAD, -81 dB THD — ADS7884
  • 49.8 dB SINAD, -68 dB THD — ADS7885
  • Unipolar Input Range: 0 V to VDD
  • Powerdown Current: 1 µA
  • Wide Input Bandwidth: 30 MHz at 3 dB
  • 6-Pin SOT23 Package
  • APPLICATIONS
    • Base Band Converters in Radio Communication
    • Motor Current/Bus Voltage Sensors in Digital Drives
    • Optical Networking (DWDM, MEMS Based Switching)
    • Optical Sensors
    • Battery Powered Systems
    • Medical Instrumentations
    • High-Speed Data Acquisition Systems
    • High-Speed Closed-Loop Systems

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