ADUM1201ARZ-RL7 Description

The ADuM1200/ADuM12011 are dual-channel digital isolators based on the iCoupler® technology from Analog Devices, Inc. These isolation components, which combine high speed CMOS and monolithic transformer technologies, offer remarkable performance qualities that are superior to alternatives like optocouplers. The straightforward iCoupler digital interfaces and steady performance characteristics alleviate the normal optocoupler worries about erratic current transfer ratios, nonlinear transfer functions, and temperature and lifetime impacts. With these iCoupler solutions, there is no longer a requirement for external drivers or other discrete components. Additionally, at comparable signal transmission rates, iCoupler devices use one-tenth to one-sixth the power of optocouplers.

Two separate isolation channels are offered by the ADuM1200/ADuM1201 isolators in a range of channel configurations and data rates (see the Ordering Guide). In order to be compatible with lower voltage systems and to provide voltage translation functionality across the isolation barrier, both devices work with a supply voltage that ranges from 2.7 V to 5.5 V on either side. The ADuM1200/ADuM1201 also offer tight channel-to-channel matching (3 ns for CR grade) and reduced pulse width distortion (3 ns for CR grade). The ADuM1200/ADuM1201 isolators, in contrast to existing optocoupler substitutes, offer a proprietary refresh feature that guarantees dc accuracy in the absence of input logic transitions and during power-up and power-down situations.

ADUM1201ARZ-RL7 Features

5 V operation

1.1 mA per channel maximum at 0 Mbps to 2 Mbps

3.7 mA per channel maximum at 10 Mbps

8.2 mA per channel maximum at 25 Mbps

3 V operation

0.8 mA per channel maximum at 0 Mbps to 2 Mbps

2.2 mA per channel maximum at 10 Mbps

4.8 mA per channel maximum at 25 Mbps

3 V/5 V level translation

High temperature operation: 125°C

High data rate: dc to 25 Mbps (NRZ)

Precise timing characteristics 

3 ns maximum pulse width distortion

3 ns maximum channel-to-channel matching

ADUM1201ARZ-RL7 Applications

Size-critical multichannel isolation

SPI interface/data converter isolation

RS-232/RS-422/RS-485 transceiver isolation

Digital field bus isolation

Hybrid electric vehicles, battery monitor, and motor drive