技术特性

• 两个全差分输入通道ADC
• 可编程增益前端增益范围从1至128
• 三线串行接口
  SPI®, QSPI™, MICROWIRE™, DSP 兼容
  SCLK上可接受施密特触发器输入
• 提供模拟输入缓冲
• 工作电压2.7 V至3.3 V或4.75 V至5.25 V
• 3 V时最大功耗为1 mW
• 待机电流最大8 µA
• 16引脚DIP、16引脚SOIC和TSSOP封装
• Two Fully Differential Input Channel ADCs
• Programmable Gain Front End Gains from 1 to 128
• Three-Wire Serial Interface
  SPI®, QSPI™, MICROWIRE™ and DSP Compatible
  Schmitt Trigger Input on SCLK
• Ability to Buffer the Analog Input
• 2.7 V to 3.3 V or 4.75 V to 5.25 V Operation
• Power Dissipation 1 mW max @ 3 V
• Standby Current 8 µA max
• 16-Lead DIP, 16-Lead SOIC and TSSOP Packages

技术指标

• Resolution (Bits): 16bit
• # Chan: 2
• Sample Rate: n/a
• Interface: Ser,SPI
• Analog Input Type: Diff-Bip,Diff-Uni
• Ain Range: Bip (Vref)/(PGA Gain),Uni (Vref)/(PGA Gain)
• ADC Architecture: Sigma-Delta
• Pkg Type: DIP,SOIC,SOP

功能框图

建议配套产品

• Recommended Voltage References for the AD7705
  • For precision 2.5V applications with AVdd = 5V, we recommend AD780, REF43 or the REF192.
  • For precision 1.2V applications with AVdd = 3V, we recommend the AD589, AD1580 or the ADR512.
• Recommended Digital Isolators for the AD7705
  • For optocoupler alternatives, see our digital isolator selection tables, ADuMxxxx.
  • For process control applications, we recommend the ADuM1400 and the ADuM1200 icoupler.
  • For cost sensitive designs, we recommend the ADuM7440, ADuM7441 or ADuM7442.
• For digital isolators with integrated isolated power, we suggest the ADuM5401, ADuM5402 or the ADuM5403.
• For isolated USB designs in healthcare and industrial control, we recommend the ADuM4160.
• Recommended Power Solutions
  • For selecting voltage regulator products, use ADIsimPower.
  • For selecting supervisor products, use the Supervisor Parametric Search.