ایزولاتور ایزولاتور دیجیتال

Product Attributes

Introduction

CA-IS372x is a high-performance 2-channel digital isolator with precise timing characteristics and low power dissipation. When isolating CMOS digital I/O, the CA-IS372x devices provide high electromagnetic immunity and low emissions. All device versions feature Schmitt trigger inputs for high noise immunity. The logic input and output buffers of each isolation channel are separated by a silicon dioxide (SiO₂) insulating barrier. The CA-IS3720 features two forward channels, the CA-IS3721 features one forward and one reverse channel, and the CA-IS3722 is opposite to the CA-IS3721, featuring one reverse and one forward channel. All devices offer a failsafe mode option. If the input-side power supply fails or the signal is lost, devices with the suffix L default to a low output, while devices with the suffix H default to a high output.

The CA-IS372x devices offer high isolation capability, helping to prevent noise and surges on data buses or other circuits from reaching the local ground and interfering with or damaging sensitive circuits. High CMTI capability ensures correct transmission of digital signals. The CA-IS372x devices are available in 8-pin narrow-body SOIC, 8-pin wide-body SOIC, and 16-pin wide-body SOIC packages. All products carry an isolation rating of 3.75kV_RMS, and wide-body package variants support a withstand voltage of up to 5kV_RMS.

Features

• Signal transfer rate: DC to 150Mbps
• Wide supply voltage range: 2.5V to 5.5V
• Wide temperature range: -40°C to 125°C
• No startup initialization required
• Default output high and low options
• Excellent electromagnetic immunity
• High CMTI: ±150kV/μs (typical)
• Low power consumption (typical): 1.5mA/channel (@5V, 1Mbps), 6.6mA/channel (@5V, 100Mbps)
• Precise timing (typical): 12ns propagation delay
• 1ns pulse width distortion
• 2ns propagation delay skew
• 5ns minimum pulse width
• Isolation voltage up to 5KVRMS
• Isolation barrier lifetime: >40 years
• Schmitt trigger input
• Narrow-body SOIC8 (S), wide-body SOIC8 (G), and wide-body SOIC16 (W) packages, RoHS compliant

Applications

• Industrial automation
• Motor control
• Medical electronics
• Isolated switching power supplies
• Solar inverters
• Isolated ADC, DAC