Overview
The ADuM1401CRW is a quad-channel digital isolator produced by Analog Devices Inc., utilizing their proprietary iCoupler technology. This device is designed to provide high-speed digital isolation, making it suitable for a variety of applications that require reliable and efficient signal transmission across different voltage domains.
The ADuM1401CRW features a 3/1 channel directionality, meaning three channels are in one direction and one channel is in the opposite direction. This configuration is particularly useful in systems where bidirectional communication is necessary but with an imbalance in the number of channels in each direction.
Key Specifications
| Parameter | Symbol | Min | Typ | Max | Unit | Test Conditions |
|---|---|---|---|---|---|---|
| Minimum Pulse Width | PW | 8.3 | 11.1 | - | ns | CL = 15 pF, CMOS signal levels |
| Maximum Data Rate | - | 90 | 120 | - | Mbps | CL = 15 pF, CMOS signal levels |
| Propagation Delay | tPHL, tPLH | 20 | 34 | 45 | ns | CL = 15 pF, CMOS signal levels |
| Pulse Width Distortion | PWD | 0.5 | - | 2 | ns | CL = 15 pF, CMOS signal levels |
| Change vs. Temperature | - | - | - | 3 ps/°C | - | CL = 15 pF, CMOS signal levels |
| Propagation Delay Skew | tPSK | - | - | 16 | ns | CL = 15 pF, CMOS signal levels |
| Channel-to-Channel Matching, Codirectional Channels | tPSKCD | - | - | 2 | ns | CL = 15 pF, CMOS signal levels |
| Channel-to-Channel Matching, Opposing-Directional Channels | tPSKOD | - | - | 5 | ns | CL = 15 pF, CMOS signal levels |
| Output Dynamic Supply Current per Channel | IDDO (D) | - | - | 0.05 mA/Mbps | - | - |
| Input Supply Current per Channel, Quiescent | IDDI (Q) | 0.26 | - | 0.31 | mA | - |
| Output Supply Current per Channel, Quiescent | IDDO (Q) | 0.11 | - | 0.14 | mA | - |
Key Features
- High-Speed Data Transfer: Supports data rates up to 120 Mbps, making it suitable for high-speed applications.
- Quad-Channel Isolation: Provides four isolated channels with 3/1 directionality, allowing for flexible communication configurations.
- Low Propagation Delay: Features propagation delays as low as 20 ns, ensuring minimal signal latency.
- Low Pulse Width Distortion: Ensures reliable signal transmission with pulse width distortion as low as 0.5 ns.
- Temperature Stability: Minimal change in propagation delay over temperature, with a change of only 3 ps/°C.
- Low Power Consumption: Quiescent supply currents are as low as 0.26 mA per channel on the input side and 0.11 mA per channel on the output side.
- Compact Package: Available in a 16-pin SOIC package, making it suitable for space-constrained designs.
Applications
- Industrial I/O: Ideal for isolating signals in industrial control systems, ensuring safety and reliability.
- Automotive Interfaces: Suitable for use in automotive systems such as CAN, audio, and Ethernet interfaces.
- Medical Devices: Used in medical devices where isolation is critical for patient safety.
- Powerline Communications: Can be used in powerline communication systems to isolate high-voltage and low-voltage domains.
- RS-232 / RS-422 / RS-485 Interfaces: Useful in serial communication interfaces where isolation is necessary.
- USB and Other Serial Bus Applications: Can be used to isolate USB and other serial bus interfaces to prevent ground loops and ensure data integrity.
Q & A
- What is the maximum data rate supported by the ADuM1401CRW?
The ADuM1401CRW supports a maximum data rate of up to 120 Mbps.
- How many channels does the ADuM1401CRW have and what is their directionality?
The ADuM1401CRW has four channels with a 3/1 directionality, meaning three channels are in one direction and one channel is in the opposite direction.
- What is the propagation delay of the ADuM1401CRW?
The propagation delay of the ADuM1401CRW is as low as 20 ns.
- What is the pulse width distortion of the ADuM1401CRW?
The pulse width distortion is as low as 0.5 ns.
- How does the ADuM1401CRW perform over temperature changes?
The ADuM1401CRW has a minimal change in propagation delay over temperature, with a change of only 3 ps/°C.
- What is the quiescent supply current of the ADuM1401CRW?
The quiescent supply current is as low as 0.26 mA per channel on the input side and 0.11 mA per channel on the output side.
- In what package is the ADuM1401CRW available?
The ADuM1401CRW is available in a 16-pin SOIC package.
- What are some common applications of the ADuM1401CRW?
Common applications include industrial I/O, automotive interfaces, medical devices, powerline communications, and serial bus interfaces.
- What technology does the ADuM1401CRW use for isolation?
The ADuM1401CRW uses Analog Devices' iCoupler technology for digital isolation.
- How does the ADuM1401CRW ensure signal integrity?
The ADuM1401CRW ensures signal integrity through low propagation delay, low pulse width distortion, and minimal change in propagation delay over temperature.
