CA-IS3021W
Low power single/dual direction I2C isolators
CA-IS3021W
Low power single/dual direction I2C isolators

Product Details

General Description

The CA-IS302x devices are complete dual-channel, galvanic digital isolators with up to 3.75kVRMS (narrow-body package)/5kVRMS (wide-body package) isolation rating and±150kV/μs typical CMTI. All device versions have Schmitt trigger inputs for high noise immunity and each isolation channel has a logic input and output buffer separated by capacitive silicon dioxide (SiO2) insulation barrier to provide high electromagnetic immunity and low EMI. These devices feature high-integration design and only require fewer external components, VDDA, VDDB bypass capacitors and pull-up resistors, to build an isolated I2C interface.

This family of devices operates from DC to 2.0MHz. The CA-IS3020 offers two bidirectional, open-drain channels for applications, such as multi-master I2C, that require data and clock to be transmitted in both directions on the same line. The CA-IS3021 provides an isolated I2C compatible interface supporting master mode only, with a unidirectional clock (SCL), and bidirectional data (SDA). All devices feature independent 3.0V to 5.5V supplies on each side of the isolator and the logic levels are set independently on either side by VDDA and VDDB. A simplified block diagram for a single CA-IS302x bidirectional channel is shown in the figure below.

The CA-IS302x series of devices are specified over -40°C to +125°C operating temperature range and are available in 8-pin SOIC narrow body package, 8-pin SOIC wide body package and 16-pin SOIC wide body package. The wide temperature range and high isolation voltage make the devices ideal for use in harsh industrial environments.

Features
名称参数
Bidirectional Data Transfer from DC to 2.0MHz
Robust Galvanic Isolation of Digital SignalsHigh lifetime: >40 years
Withstands up to 3.75kVRMS (narrow-body package) and 5kVRMS (wide-body packages) isolation rating for 60s (VISO)
Narrow-body and wide-body Packages (4mm or 8mm Creepage and Clearance)
±150 kV/μs typical CMTI
Schmitt trigger inputs for high noise immunity
High electromagnetic immunity and withstands±10kV surge
±8kV Human Body Model ESD Protection
3.0V to 5.5V Wide Supply Operation
Wide Operating Temperature Range:-40°C to 105°C
Open-drain Outputs3.5mA Side A sink current capability
35mA Side B sink current capability
RoHS-Compliant PackagesNarrow-body SOIC8-NB(S) package
Wide-body SOIC8-WB(G) package
Wide-body SOIC16-WB(W) package
Applications

◎ I2C, SMBus, PMBus™ Interfaces
◎ Motor control systems
◎ Medical Equipment
◎ Battery Management
◎ Instrumentation

Device information
PART NUMBER PACKAGE BODY SIZE (NOM)
CA-IS3020
CA-IS3021
SOIC8(S)4.90mm×3.90mm
CA-IS3020
CA-IS3021
SOIC8-WB(G)5.85mm×7.50mm
CA-IS3020
CA-IS3021
SOIC16-WB(W) 10.30mm×7.50mm
Simplified Channel Structure

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