The MAX22_2_ are a family of 2-channel reinforced ultra-low-power digital isolators. The MAX22_2_ consume ultra-low power not only in DC but also across the entire operating speed range up to 10Mbps. The family offers two unidirectional channel configurations to accommodate any 2-channel design.

The MAX22_20 feature two channels transferring digital signals in one direction. The MAX22_21 have one channel to transmit data in one direction and the other channel to transmit in the opposite direction.

The MAX22420/1 are available in an 8-pin narrow-body SOIC package with 4mm creepage and clearance and are rated up to 3kVRMS. The MAX22820/1 are available in an 8-pin wide-body SOIC package with 8mm creepage and clearance and are rated up to 5kV_RMS. This family of digital isolators offers ultra-low-power operation, high electromagnetic interference (EMI) immunity, and stable temperature performance through Analog Devices’ proprietary process technology. The devices isolate different ground domains and block high-voltage/high-current transients from sensitive or human interface circuitry.

The family of devices has a maximum data rate of 10Mbps and can be ordered with two glitch filter options and default-high or default-low outputs. The default is the state the output assumes when the input is open circuit. The B/E versions have 70ns (typ) glitch filter and C/F versions have 29ns (typ) glitch filter. The devices have two supply inputs (V_DDA and V_DDB) that independently set the logic levels on either side of device. V_DDA and V_DDB are referenced to GNDA and GNDB, respectively. The family also features a refresh circuit to ensure output accuracy when an input remains in the same state indefinitely.

Applications

• 4-20mA Loop Process Control
• Battery Management
• Compact Micro PLC
• Parasitically Powered Applications