Overview
The ADuM1201WTRZ55, produced by Analog Devices Inc., is a dual-channel digital isolator based on the company's iCoupler technology. This component is designed to provide high-speed data transfer while maintaining electrical isolation between the input and output sides. It is particularly useful in applications requiring reliable and high-speed data communication across isolation barriers.
The ADuM1201WTRZ55 is part of the ADuM1200/ADuM1201 series, which offers various channel configurations and data rates. It supports 3 V and 5 V operation, making it versatile for different system designs. The component is also qualified for automotive applications, ensuring reliability in high-temperature environments up to 125°C.
Key Specifications
| Parameter | Value | Conditions |
|---|---|---|
| Data Rate | dc to 25 Mbps (NRZ) | - |
| Pulse Width Distortion | < 3 ns (CR Grade) | - |
| Channel-to-Channel Matching | < 3 ns (CR Grade) | - |
| Supply Current (VDD1, VDD2) at 0 Mbps to 2 Mbps | 0.4 mA to 0.8 mA per channel | DC to 1 MHz logic signal frequency |
| Supply Current (VDD1, VDD2) at 10 Mbps | 1.5 mA to 2.2 mA per channel | 5 MHz logic signal frequency |
| Supply Current (VDD1, VDD2) at 25 Mbps | 3.4 mA to 4.8 mA per channel | 12.5 MHz logic signal frequency |
| Logic High Input Threshold | 0.7 * (VDD1 or VDD2) | - |
| Logic Low Input Threshold | 0.3 * (VDD1 or VDD2) | - |
| Logic High Output Voltage | (VDD1 or VDD2) - 0.1 V to (VDD1 or VDD2) - 0.5 V | IOx = -20 µA, VIx = VIxH |
| Logic Low Output Voltage | 0.0 V to 0.1 V | IOx = 20 µA, VIx = VIxL |
| Common-Mode Transient Immunity | >25 kV/μs | - |
| Operating Temperature | -40°C to 125°C | - |
| Safety and Regulatory Approvals | UL recognition 2500 V rms for 1 minute per UL 1577, CSA Component Acceptance Notice 5A, VDE Certificate of Conformity DIN V VDE V 0884-10 | - |
Key Features
- Bidirectional Communication: Supports bidirectional data transfer across the isolation barrier.
- 3 V/5 V Level Translation: Compatible with both 3 V and 5 V systems, allowing for flexible integration into various designs.
- High Data Rate: Operates at data rates from dc to 25 Mbps (NRZ), ensuring high-speed communication.
- Precise Timing Characteristics: Offers low pulse width distortion (<3 ns for CR grade) and tight channel-to-channel matching (<3 ns for CR grade).
- High Common-Mode Transient Immunity: Provides immunity to common-mode transients greater than 25 kV/μs.
- Automotive Grade: Qualified for automotive applications with operation up to 125°C.
- Patented Refresh Feature: Ensures dc correctness in the absence of input logic transitions and during power-up/power-down conditions.
Applications
- Size-Critical Multichannel Isolation: Ideal for applications where space is limited and multiple isolation channels are required.
- SPI Interface/Data Converter Isolation: Used in SPI interfaces and data converter applications requiring isolation.
- RS-232/RS-422/RS-485 Transceiver Isolation: Suitable for isolating serial communication interfaces.
- Digital Field Bus Isolation: Applied in digital field bus systems to ensure reliable and isolated communication.
- Hybrid Electric Vehicles, Battery Monitor, and Motor Drive: Used in automotive systems for battery monitoring and motor drive applications.
Q & A
- What is the maximum data rate of the ADuM1201WTRZ55?
The ADuM1201WTRZ55 operates at data rates from dc to 25 Mbps (NRZ).
- What are the supported supply voltages for the ADuM1201WTRZ55?
The component supports both 3 V and 5 V operation.
- What is the maximum operating temperature for the ADuM1201WTRZ55?
The component can operate up to 125°C, making it suitable for automotive applications.
- Does the ADuM1201WTRZ55 have any safety and regulatory approvals?
Yes, it has UL recognition 2500 V rms for 1 minute per UL 1577, CSA Component Acceptance Notice 5A, and VDE Certificate of Conformity DIN V VDE V 0884-10.
- What is the common-mode transient immunity of the ADuM1201WTRZ55?
The component has a common-mode transient immunity greater than 25 kV/μs.
- Does the ADuM1201WTRZ55 support bidirectional communication?
Yes, it supports bidirectional data transfer across the isolation barrier.
- What is the pulse width distortion of the ADuM1201WTRZ55?
The pulse width distortion is less than 3 ns for the CR grade.
- What are some typical applications of the ADuM1201WTRZ55?
It is used in size-critical multichannel isolation, SPI interface/data converter isolation, RS-232/RS-422/RS-485 transceiver isolation, digital field bus isolation, and automotive systems.
- Does the ADuM1201WTRZ55 have a patented refresh feature?
Yes, it has a patented refresh feature that ensures dc correctness in the absence of input logic transitions and during power-up/power-down conditions.
- How is the supply current calculated for the ADuM1201WTRZ55?
The supply current can be calculated based on the data rate and channel configuration, with detailed information provided in the datasheet's Power Consumption section.
