Overview
The ADuM1402ARWZ is a quad-channel digital isolator produced by Analog Devices Inc., utilizing the company's proprietary iCoupler® technology. This device is designed to provide high-speed digital isolation, ensuring reliable and accurate data transmission across different voltage domains. The ADuM1402ARWZ is part of the ADuM1400/ADuM1401/ADuM1402 family, which is known for its low pulse width distortion and tight channel-to-channel matching, making it suitable for a variety of applications requiring precise digital signal isolation.
Key Specifications
| Parameter | Symbol | Min | Typ | Max | Unit | Test Conditions |
|---|---|---|---|---|---|---|
| Input Supply Current per Channel, Quiescent | IDDI (Q) | 0.50 | 0.53 | - | mA | DC to 1 MHz logic signal freq. |
| Output Supply Current per Channel, Quiescent | IDDO (Q) | 0.19 | 0.21 | - | mA | DC to 1 MHz logic signal freq. |
| Total Supply Current, Four Channels | IDD1 (Q), IDD2 (Q) | 1.5 | 2.1 | - | mA | DC to 1 MHz logic signal freq. |
| Maximum Data Rate | - | - | - | 1 Mbps | - | CL = 15 pF, CMOS signal levels |
| Propagation Delay | tPHL, tPLH | 50 | 65 | 100 ns | - | CL = 15 pF, CMOS signal levels |
| Pulse Width Distortion | PWD | - | - | 40 ns | - | CL = 15 pF, CMOS signal levels |
Key Features
- High-Speed Digital Isolation: The ADuM1402ARWZ supports data rates up to 1 Mbps, making it suitable for high-speed applications.
- Low Pulse Width Distortion: The device features low pulse width distortion (<2 ns for CRW grade), ensuring accurate signal transmission.
- Tight Channel-to-Channel Matching: Tight matching between channels (<2 ns for CRW grade) enhances the reliability of the isolator.
- Refresh Feature: A patented refresh feature ensures dc correctness even in the absence of input logic transitions or when power is not applied to one of the supplies.
- Quad-Channel Isolation: Provides four independent isolation channels, increasing the flexibility of the device in various applications.
Applications
- Industrial I/O: Suitable for industrial control systems and automation where reliable isolation is critical.
- Automotive Interfaces: Used in automotive systems such as CAN, audio, and Ethernet interfaces.
- Medical Devices: Applicable in medical devices where isolation is necessary for patient safety.
- Power Supplies and DC-DC Converters: Used to isolate control signals in power supply and DC-DC converter applications.
- General-Purpose Isolation: Can be used in any application requiring reliable digital signal isolation.
Q & A
- What is the maximum data rate of the ADuM1402ARWZ?
The maximum data rate of the ADuM1402ARWZ is 1 Mbps. - What is the typical quiescent input supply current per channel?
The typical quiescent input supply current per channel is 0.53 mA. - What is the propagation delay of the ADuM1402ARWZ?
The propagation delay is typically 65 ns with a maximum of 100 ns. - Does the ADuM1402ARWZ have a refresh feature?
Yes, it has a patented refresh feature to ensure dc correctness. - How many isolation channels does the ADuM1402ARWZ provide?
The ADuM1402ARWZ provides four independent isolation channels. - What are some common applications of the ADuM1402ARWZ?
Common applications include industrial I/O, automotive interfaces, medical devices, and general-purpose isolation. - What is the pulse width distortion of the ADuM1402ARWZ?
The pulse width distortion is typically 40 ns. - Is the ADuM1402ARWZ suitable for high-speed applications?
Yes, it is suitable for high-speed applications due to its support for data rates up to 1 Mbps. - Does the ADuM1402ARWZ have automotive-grade versions?
Yes, there are automotive-grade versions available, such as the ADuM1402W. - What technology does the ADuM1402ARWZ use for isolation?
The ADuM1402ARWZ uses Analog Devices' iCoupler® technology for isolation.
