ایزولاتور ایزولاتور دیجیتال

Product Attributes

Introduction

The CS817x20/CS817x22 series ultra-low-power digital isolators utilize Chipanalog's "pulse coding" capacitive isolation technology, with a quiescent current as low as 90μA per channel. These CMOS-compatible isolated digital I/O interfaces feature an isolation rating of up to 3kVRMS and a typical common-mode transient immunity (CMTI) of ±150 kV/μs, providing high electromagnetic immunity and low EMI. All device versions employ Schmitt-trigger inputs for high noise immunity. Each isolation channel contains a logic input and output buffer separated by a capacitive silicon dioxide (SiO2) insulation barrier, requiring only two VDD bypass capacitors to implement a digital signal isolation solution. The CS817x20/CS817x22 series offers all possible unidirectional channel configurations to accommodate 2-channel digital I/O applications. The CS817x20HS and CS817x20LS feature two channels for unidirectional digital signal transmission; the CS817x22HS and CS817x22LS devices have one forward channel and one reverse channel. All devices in this series feature default outputs. When the input is unpowered or open-circuit, devices with the LS suffix default to a low output, while devices with the HS suffix default to a high output. This series of digital isolators is based on a simple isolation architecture, providing a robust isolated data path with no special considerations or initialization required at startup. The series operates over a temperature range of -40°C to +105°C and is available in an 8-pin SOIC narrow-body package.

Features

• Ultra-low power consumption
• 90µA per channel DC at 3.3V
• 100µA per channel at 3.3V, 10kbps
• 160µA per channel at 3.3V, 200kbps
• Data rate up to 200kbps
• Wide supply voltage range: 2.375V to 5.5V
• Robust current isolation for digital signals
• Long lifetime: >40 years
• Isolation rating up to 3kV RMS
• Typical common-mode transient immunity ±150 kV/μs
• Schmitt trigger input for high noise immunity
• High electromagnetic immunity
• No initialization required at startup
• Wide operating temperature range: -40 to 105°C
• Selectable default output high (CS817x2xHS) and low (CS817x2xLS)
• RoHS-compliant package: SOIC8(S) narrow body

Applications

• Lithium battery protection
• Home appliances
• Industrial automation systems
• Motor control
• Medical electronics