ADuM3400:  Quad-Channel, Digital Isolator, Enhanced System-Level ESD Reliability

The ADuM340x* are 4-channel digital isolators based on the Analog Devices, Inc. iCoupler ® technology. Combining high speed CMOS and monolithic air core transformer technology, these isolation components provide outstanding performance characteristics superior to alternatives such as optocoupler devices.

iCoupler devices remove the design difficulties commonly associated with optocouplers. Typical optocoupler concerns regarding uncertain current transfer ratios, nonlinear transfer functions, and temperature and lifetime effects are eliminated with the simple iCoupler digital interfaces and stable performance characteristics. The need for external drivers and other discrete components is eliminated with these iCoupler products. Further-more, iCoupler devices consume one-tenth to one-sixth the power of optocouplers at comparable signal data rates.

The ADuM340x isolators provide four independent isolation channels in a variety of channel configurations and data rates (see the Ordering Guide). All models operate with the supply voltage on either side ranging from 2.7 V to 5.5 V, providing compatibility with lower voltage systems as well as enabling a voltage translation functionality across the isolation barrier. The ADuM340x isolators have a patented refresh feature that ensures dc correctness in the absence of input logic transitions and during power-up/power-down conditions.

In comparison to the ADuM140x isolators, the ADuM340x isolators contain various circuit and layout changes to provide increased capability relative to system-level IEC 61000-4-x testing (ESD/burst/surge). The precise capability in these tests for either the ADuM140x or ADuM340x products is strongly determined by the design and layout of the user’s board or module. For more information, see the AN-793 application note, ESD/Latch-Up Considerations with iCoupler Isolation Products.

产品应用领域 Applications

• General-purpose multichannel isolation
• SPI/data converter isolation
• RS-232/RS-422/RS-485 transceivers
• Industrial field bus isolation

ADuM3400 特点

• Enhanced system-level ESD performance per IEC 61000-4-x
• Bidirectional communication
• 3 V/5 V level translation
• High temperature operation: 105°C
• High data rate: dc to 90 Mbps (NRZ)

• 5 V operation 
  1.4 mA per channel maximum @ 0 Mbps to 2 Mbps 
  4.3 mA per channel maximum @ 10 Mbps 
  34 mA per channel maximum @ 90 Mbps
• 3 V operation 
  0.9 mA per channel maximum @ 0 Mbps to 2 Mbps 
  2.4 mA per channel maximum @ 10 Mbps 
  20 mA per channel maximum @ 90 Mbps
• Precise timing characteristics 
  2 ns maximum pulse width distortion 
  2 ns maximum channel-to-channel matching
• High common-mode transient immunity: >25 kV/μs
• Output enable function
• 16-lead SOIC wide body, RoHS-compliant package

• UL recognition: 2500 V rms for 1 minute per UL 1577
• CSA Component Acceptance Notice #5A
• VDE Certificate of Conformity 
  DIN V VDE V 0884-10 (VDE V 0884-10): 2006-12 
  VIORM = 560 V peak

ADuM3400 功能框图

ADuM3400 应用技术支持与电子电路设计开发资源下载

1. ADuM3400 数据手册DataSheet下载. pdf
2. Analog Devices, Inc.ADI 美国模拟器件公司产品订购手册 .PDF
3. ADC模数转换器选型指南 . PDF