Overview
The ISO1050DW is a galvanically isolated CAN (Controller Area Network) transceiver designed by Texas Instruments. It meets the specifications of the ISO11898-2 standard, ensuring compatibility with various CAN bus protocols. The device features a silicon oxide (SiO2) insulation barrier, providing up to 5000 V RMS of galvanic isolation. This isolation prevents noise currents on the data bus from interfering with or damaging sensitive circuitry, making it suitable for harsh environments. The ISO1050DW operates over an ambient temperature range of –55°C to 105°C and supports signaling rates up to 1 megabit per second (Mbps).
Key Specifications
| Parameter | Value | Unit |
|---|---|---|
| Isolation Voltage (RMS) | 5000 | V |
| Loop Delay (Typical/Maximum) | 150 ns / 210 ns | ns |
| Transient Immunity | 50 kV/μs (Typical) | kV/μs |
| Bus-Fault Protection | –27 V to 40 V | V |
| Common-Mode Range | –12 V to 12 V | V |
| Operating Ambient Temperature | –55°C to 105°C | °C |
| Supply Voltage (VCC1 and VCC2) | 3 to 5.5 V | V |
| Signaling Rate | Up to 1 Mbps | Mbps |
Key Features
- Meets the requirements of ISO11898-2 standard
- 5000 V RMS isolation for ISO1050DW and 2500 V RMS for ISO1050DUB
- Fail-safe outputs
- Low loop delay: 150 ns (typical), 210 ns (maximum)
- 50 kV/μs typical transient immunity
- Bus-fault protection from –27 V to 40 V
- Driver (TXD) dominant time-out function
- I/O voltage range supports 3.3 V and 5 V microprocessors
- Safety-related certifications including VDE, UL, CSA, TUV, and CQC approvals
- Typical 25-year life at rated working voltage
Applications
- Industrial automation, control, sensors, and drive systems
- Building and climate control (HVAC) automation
- Security systems
- Transportation
- Medical devices
- Telecom systems
- CAN bus standards such as CANopen, DeviceNet, NMEA2000, ARINC825, ISO11783, CAN Kingdom, CANaerospace
Q & A
- What is the primary function of the ISO1050DW?
The ISO1050DW is a galvanically isolated CAN transceiver designed to provide differential transmit and receive capabilities for CAN bus communication while ensuring high isolation and protection against harsh environments.
- What is the isolation voltage rating for the ISO1050DW?
The ISO1050DW has an isolation voltage rating of up to 5000 V RMS.
- What are the operating temperature ranges for the ISO1050DW?
The device operates over an ambient temperature range of –55°C to 105°C.
- What safety certifications does the ISO1050DW have?
The ISO1050DW has safety-related certifications including VDE, UL, CSA, TUV, and CQC approvals.
- What is the typical loop delay of the ISO1050DW?
The typical loop delay is 150 ns, with a maximum of 210 ns.
- What is the transient immunity of the ISO1050DW?
The device has a typical transient immunity of 50 kV/μs.
- What are the common-mode range and bus-fault protection of the ISO1050DW?
The common-mode range is –12 V to 12 V, and the bus-fault protection is from –27 V to 40 V.
- Does the ISO1050DW support multiple supply voltages?
Yes, it supports I/O voltage ranges for 3.3 V and 5 V microprocessors.
- What is the expected lifespan of the ISO1050DW at rated working voltage?
The device has a typical 25-year life at rated working voltage.
- In which industries is the ISO1050DW commonly used?
The ISO1050DW is commonly used in industrial automation, HVAC, security systems, transportation, medical devices, and telecom systems.
