Analog Devices / Maxim Integrated MAX1443x 4-Channel Digital Isolators
Analog Devices MAX1443x 4-Channel Digital Isolators are fast, low-power, digital galvanic isolators made using Maxim's proprietary process technology. The MAX1443x isolators transfer digital signals between circuits with different power domains. These isolators use 0.58mW per channel at 1Mbps with a 1.8V supply and have an isolation rating of 5kVRMS for 60 seconds. The output enable for the A side of the MAX1443xR/S/U/V is active-low. This feature makes it ideal for isolating a port on a shared SPI bus since the CS signal can directly enable the MISO signal on the isolator.
The Analog Devices MAX1443x are available in a 16-pin wide-body SOIC package with 8mm of creepage and clearance. The package material has a minimum comparative tracking index (CTI) of 600V, which gives it a group 1 rating in creepage tables. All devices are rated for operation at ambient temperatures of -40°C to +125°C.
Features
- Robust galvanic isolation for fast digital signals
- 200Mbps data rate
- Withstands 5kVRMS for 60s (VISO)
- Continuously withstands 848VRMS (VIOWM)
- Withstands ±10kV surge between GNDA and GNDB with 1.2/50μs waveform
- High CMTI (50kV/μs, typical)
- Low power consumption
- 1.1mW per channel at 1Mbps with VDD = 3.3V
- 3.5mW per channel at 100Mbps with VDD = 1.8V
- Options to support a broad range of applications
- Two data rates (25Mbps, 200Mbps)
- 3-channel direction configurations
- Two output default states (high/low)
Applications
- Fieldbus communications for industrial automation
- Isolated RS-485/RS-422, CAN
- General isolation application
- Battery management
- Medical systems
Typical Application Circuit
Related Product
Analog Devices / Maxim Integrated MAX14435xEVKIT Evaluation Kits
Used to evaluate the MAX1443x four-channel unidirectional digital isolator.
Publicado: 2018-04-03
| Actualizado: 2023-04-11