ADIMAX12931FASA+
Overview
The MAX12931FASA+ is a high-speed, two-channel digital isolator providing 3000Vrms of galvanic isolation in a compact 8-SOIC package. It supports data rates up to 150Mbps and features a Common Mode Transient Immunity (CMTI) of 50kV/us to ensure reliable data transfer in electrically noisy environments. Each channel is unidirectional, and the device operates over a wide supply range of 1.71V to 5.5V.
Why Choose This Part
The device offers extremely low power consumption of approximately 0.73mA per channel at 1.8V and 12.5MHz, making it suitable for power-constrained applications. Its high 50kV/us CMTI provides superior robustness against fast voltage transients compared to standard optocouplers, while the wide 1.71V to 5.5V supply range allows for seamless level translation between different logic domains.
Applications
Key Specifications
Getting Started
To evaluate this isolator, designers typically use the MAX12931WEVKIT evaluation kit which allows for quick testing of high-speed performance and power consumption. Ensure that a 0.1uF bypass capacitor is placed as close as possible to both the VDDA and VDDB pins relative to their respective grounds to maintain signal integrity at 150Mbps.
MAX12931 Family
Comparing specs that differ across variants. The current part is highlighted.
| Part Number | Data Rate | Voltage - Isolation | Pulse Width Distortion (Max) | Propagation Delay tpLH / tpHL (Max) | Common Mode Transient Immunity (Min) | Stock |
|---|---|---|---|---|---|---|
| MAX12931FASA+ (this part) | 150M | 3000V | 2ns | 9.2ns, 9.4ns | 50kV | 2,360 |
| MAX12931BASA+ | 25M | 3750V | 4ns | 32.5ns, 33.6ns | 50kV | 3,773 |
