Overview
The ISO7821DWWR is a high-performance, dual-channel digital isolator produced by Texas Instruments. This device is designed to provide robust isolation and high electromagnetic immunity, making it suitable for a wide range of applications. The ISO7821DWWR features a reinforced isolation barrier with a silicon dioxide (SiO2) insulation layer, ensuring high isolation ratings of up to 8000 VPK and 5700 VRMS. It operates over a wide temperature range of –55°C to 125°C and supports signaling rates up to 100 Mbps. The device is available in 16-pin SOIC wide-body (DW) and extra-wide body (DWW) packages, enhancing its versatility in various system designs.
Key Specifications
| Parameter | Value | Unit |
|---|---|---|
| Isolation Type | Capacitive Coupling | |
| Isolation Voltage | 8000 VPK (reinforced), 5700 VRMS | |
| Maximum Operating Temperature | 125°C | |
| Minimum Operating Temperature | -55°C | |
| Signaling Rate | Up to 100 Mbps | |
| Supply Voltage Range | 2.25 V to 5.5 V | |
| Power Consumption (typical) | 1.8 mA per channel at 1 Mbps | |
| Propagation Delay (typical) | 11 ns at 5 V supplies | |
| Common-mode Transient Immunity (CMTI) | ±100 kV/μs | |
| Package Type | 16-pin SOIC (DW and DWW) |
Key Features
- High-performance, dual-channel digital isolator with 8000 VPK reinforced isolation voltage.
- Wide supply range: 2.25 V to 5.5 V and level translation.
- Low power consumption: typical 1.8 mA per channel at 1 Mbps.
- Low propagation delay: 11 ns typical at 5 V supplies.
- Industry-leading CMTI: ±100 kV/μs.
- Robust electromagnetic compatibility (EMC) and low emissions.
- System-level ESD, EFT, and surge immunity.
- Isolation barrier life: > 25 years.
- Available in SOIC-16 wide body (DW) and extra-wide body (DWW) packages.
- Safety and regulatory approvals from VDE, CSA, CQC, and TUV.
Applications
- Industrial Automation
- Motor Control
- Power Supplies
- Solar Inverters
- Medical Equipment
- Hybrid Electric Vehicles
Q & A
- What is the isolation voltage of the ISO7821DWWR?
The ISO7821DWWR has an isolation voltage of up to 8000 VPK and 5700 VRMS.
- What is the operating temperature range of the ISO7821DWWR?
The device operates over a temperature range of –55°C to 125°C.
- What is the maximum signaling rate supported by the ISO7821DWWR?
The device supports signaling rates up to 100 Mbps.
- What is the typical power consumption of the ISO7821DWWR per channel?
The typical power consumption is 1.8 mA per channel at 1 Mbps.
- What is the common-mode transient immunity (CMTI) of the ISO7821DWWR?
The CMTI is ±100 kV/μs.
- In what packages is the ISO7821DWWR available?
The device is available in 16-pin SOIC wide-body (DW) and extra-wide body (DWW) packages.
- What safety and regulatory approvals does the ISO7821DWWR have?
The device has approvals from VDE, CSA, CQC, and TUV.
- What are some typical applications of the ISO7821DWWR?
Typical applications include industrial automation, motor control, power supplies, solar inverters, medical equipment, and hybrid electric vehicles.
- How does the ISO7821DWWR enhance electromagnetic compatibility?
The device enhances electromagnetic compatibility through innovative chip design and layout techniques, easing system-level ESD, EFT, surge, and emissions compliance.
- What is the default output state of the ISO7821DWWR if the input power or signal is lost?
The default output state is high for the ISO7821 and low for the ISO7821F device.
