Overview
The ISO7221CDRG4 is a dual-channel digital isolator produced by Texas Instruments. This device is part of the ISO7221x family, which provides galvanic isolation between the input and output logic signals. It is designed to block high voltage and isolate grounds, preventing noise currents from interfering with sensitive circuitry. The isolator uses Texas Instruments' silicon-dioxide (SiO2) isolation barrier, ensuring high reliability and safety in various applications.
Key Specifications
| Parameter | Value | Unit |
|---|---|---|
| Isolation Voltage | 4000 VPK | V |
| Isolation Type | Capacitive Coupling | |
| Supply Voltage - Min | 2.8 V | V |
| Supply Voltage - Max | 5.5 V | V |
| Data Rate | 25 Mbps | |
| Package Type | 8-SOIC (0.154", 3.90mm Width) | |
| VCC1 and VCC2 Supply Current (Quiescent) | 0.4 - 7.5 mA | mA |
| VCC1 and VCC2 Supply Current (Active) | 1.5 - 10 mA | mA |
Key Features
- Galvanic Isolation: Provides up to 4000 VPK of isolation voltage, ensuring safe and reliable operation in high-voltage environments.
- High-Speed Data Transfer: Supports data rates of up to 25 Mbps, making it suitable for high-speed applications.
- Low Power Consumption: Operates with supply currents as low as 0.4 mA in quiescent mode, reducing power consumption.
- Multiple Supply Voltages: Compatible with supply voltages ranging from 2.8 V to 5.5 V, offering flexibility in system design.
- Robust Isolation Barrier: Uses Texas Instruments' silicon-dioxide (SiO2) isolation barrier for enhanced reliability and safety.
- Compliance with Standards: Meets various international standards, including IEC 61000-4-8 and IEC 61000-4-9 for magnetic field immunity.
Applications
- Industrial Automation: Used in control systems, motor drives, and other industrial automation equipment to ensure safe and reliable signal isolation.
- Medical Devices: Suitable for medical devices requiring high isolation and low power consumption, such as patient monitoring systems and diagnostic equipment.
- Automotive Systems: Applied in automotive systems for isolating high-voltage signals and ensuring the safety and reliability of the vehicle's electrical systems.
- Power Supplies and DC-DC Converters: Used to isolate grounds and prevent noise currents in power supply and DC-DC converter applications.
Q & A
- What is the maximum isolation voltage of the ISO7221CDRG4?
The maximum isolation voltage is up to 4000 VPK.
- What are the supported supply voltage ranges for the ISO7221CDRG4?
The device supports supply voltages ranging from 2.8 V to 5.5 V.
- What is the maximum data rate supported by the ISO7221CDRG4?
The device supports data rates of up to 25 Mbps.
- What type of isolation does the ISO7221CDRG4 use?
The device uses capacitive coupling for isolation.
- What is the package type of the ISO7221CDRG4?
The device is packaged in an 8-SOIC (0.154", 3.90mm Width) package.
- Is the ISO7221CDRG4 compliant with any international standards?
Yes, it is compliant with standards such as IEC 61000-4-8 and IEC 61000-4-9 for magnetic field immunity.
- What are some typical applications of the ISO7221CDRG4?
Typical applications include industrial automation, medical devices, automotive systems, and power supplies.
- How does the ISO7221CDRG4 ensure low power consumption?
The device operates with low supply currents, as low as 0.4 mA in quiescent mode, to reduce power consumption.
- What is the purpose of the SiO2 isolation barrier in the ISO7221CDRG4?
The SiO2 isolation barrier provides enhanced reliability and safety by ensuring galvanic isolation between the input and output logic signals.
- Can the ISO7221CDRG4 be used in high-speed applications?
Yes, the device supports high-speed data transfer rates of up to 25 Mbps, making it suitable for high-speed applications.
