ADUM1245
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ADUM1245

Micropower, Dual-Channel Digital Isolators, Default Low (2/0 Channel Directionality)

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Info : RECOMMENDED FOR NEW DESIGNS tooltip
Info : RECOMMENDED FOR NEW DESIGNS tooltip
Part Details
Part Models 4
1ku List Price Starting From $1.79
Features
  • Ultralow power operation
    3.3 V operation
    6 μA per channel quiescent current, refresh enabled
    0.3 μA per channel quiescent current, refresh disabled
  • 148 μA/Mbps per channel typical dynamic current
  • 116 μA/Mbps per channel typical dynamic current
  • Quad-channel products available
  • See datasheet for additional features

Additional Details
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The ADuM1240 / ADuM1241 / ADuM1245 / ADuM1246 are micropower, 2-channel, digital isolators based on the Analog Devices, Inc., iCoupler® technology. Combining high speed, complementary metal oxide semiconductor (CMOS) and monolithic air core transformer technologies, these isolation components provide outstanding performance characteristics superior to the alternatives, such as optocoupler devices. The 20-lead SSOP version of the ADuM1240 / ADuM1241 / ADuM1245 / ADuM1246 allows control of the internal refresh functions. As shown in Figure 3, in standard operating mode, when ENx = 0 (internal refresh enabled), the current per channel is less than 10 μA.

When ENx = 1 (internal refresh disabled), the current per channel drops to less than 1 μA.

The ADuM1240 / ADuM1241 / ADuM1245 / ADuM1246 are packaged in either a 20-lead SSOP for 3.75 kV reinforced isolation or an 8-lead SOIC for 3 kV basic isolation. The devices meet regulatory requirements, such as UL and CSA standards.

In addition to the space saving package options, the ADuM1240 / ADuM1241 / ADuM1245 / ADuM1246 operate with supplies as low as 2.25 V. All models provide low, pulse width distortion at <8 ns. In addition, every model has an input glitch filter to protect against extraneous noise disturbances.

APPLICATIONS

  • General-purpose, low power, multichannel isolation
  • 1 MHz low power SPI
  • 4 mA to 20 mA loop process control
Part Models 4
1ku List Price Starting From $1.79

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Documentation

Documentation

Video

Part Model Pin/Package Drawing Documentation CAD Symbols, Footprints, and 3D Models
ADUM1245ARSZ
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ADUM1245ARSZ-RL7
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ADUM1245ARZ
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ADUM1245ARZ-RL7
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Software and Part Ecosystem

Software and Part Ecosystem

Evaluation Kit

Evaluation Kits 1

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EVAL-ADUM1241

ADuM124x Evaluation Board

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EVAL-ADUM1241

ADuM124x Evaluation Board

ADuM124x Evaluation Board

Product Detail

The EVAL-ADuM1241EBZ supports the ADuM1240ARSZ, ADuM1241ARSZ, ADuM1245ARSZ, and ADuM1246ARSZ, which are ultralow power, 2-channel iCoupler® isolators. The evaluation board provides a JEDEC standard 20-lead SSOP pad layout, support for signal distribution, loopback, and loads referenced to VDDx or GNDx, as well as optimal by pass capacitance. Signal sources can be wired onto the board as well as brought on to the board through edge-mounted SMA connectors (sold separately) or terminal blocks for power connections. The board includes 200mil header positions for compatibility with Tektronix active probes.

The board follows best printed circuit board (PCB) design practices for 4-layer boards, including a full power and ground plane on each side of the isolation barrier. No other EMI or noise mitigation design features are included on this board. In cases of very high speed operation or when ultralow emissions are required, refer to the AN-1109 application note for additional board layout techniques.

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