ایزولاتور ایزولاتور دیجیتال

Product Attributes

Introduction

CA-IS373x is a high-performance three-channel digital isolator with precise timing characteristics and low power dissipation. When isolating CMOS digital I/O, CA-IS373x 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) insulation barrier. The CA-IS3730 has all three channels in the same direction, with output enable on the output side (Side B). The CA-IS3731 has two forward and one reverse channel, with output enable on both sides. All devices offer a failsafe mode option. If the input-side power supply fails or the signal is lost, devices with suffix L default to a low output, while devices with suffix H default to a high output.

CA-IS373x devices feature high isolation capability, helping to prevent noise and surges on data buses or other circuits from entering the local ground and interfering with or damaging sensitive circuitry. High CMTI capability ensures correct transmission of digital signals. CA-IS373x devices are available in 16-pin narrow-body SOIC, 16-pin narrow-body SSOP, and 16-pin wide-body SOIC packages. All products are rated at 3.75kVrms isolation, and wide-body package variants support insulation withstand voltage up to 5kVrms.

Features

• Signal transmission rate: DC to 150Mbps
• Wide supply voltage range: 2.5V to 5.5V
• Wide temperature range: -40℃ to 125℃
• No startup initialization required
• Default output high and low options
• Excellent electromagnetic immunity
• High CMTI: ±150kV/us (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 5kV RMS
• Isolation barrier lifetime: >40 years
• Tri-state output with enable pin
• Schmitt trigger input
• Narrow-body SOIC16-NB(N), SSOP16-NB(B), and wide-body SOIC16-WB(W) packages, RoHS compliant

Applications

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