Overview
The ADuM1201ARZ, produced by Analog Devices Inc., is a dual-channel digital isolator that utilizes the company's iCoupler technology. This component is designed to provide high-speed data transfer with precise timing characteristics and robust isolation. It is particularly useful in applications requiring voltage translation across the isolation barrier and ensures dc correctness even in the absence of input logic transitions or during power-up/power-down conditions.
Key Specifications
| Parameter | Min | Typ | Max | Unit | Test Conditions/Comments |
|---|---|---|---|---|---|
| Supply Voltage (VDD1, VDD2) | 2.7 | 3.0 | 3.6 | V | For 3V operation |
| Supply Voltage (VDD1, VDD2) | 4.5 | 5.0 | 5.5 | V | For 5V operation |
| Maximum Data Rate | - | - | 25 Mbps | - | NRZ, depending on the grade |
| Propagation Delay (tPHL, tPLH) | 15 | - | 55 ns | - | For BR grade, CL = 15 pF, CMOS signal levels |
| Pulse Width Distortion (PWD) | - | - | 40 ns | - | |
| Channel-to-Channel Matching | - | - | 50 ns | - | |
| Output Rise/Fall Time (10% to 90%) | - | - | 10 ns | - | |
| Package | - | - | SOIC-8 | - | |
| Operating Temperature | -40 | - | 125°C | - |
Key Features
- High-Speed Data Transfer: Supports data rates up to 25 Mbps (NRZ).
- Precise Timing Characteristics: Low pulse width distortion (<3 ns for CR grade) and tight channel-to-channel matching (<3 ns for CR grade).
- Voltage Translation: 3V/5V level translation across the isolation barrier.
- DC Correctness: Ensures dc correctness in the absence of input logic transitions and during power-up/power-down conditions through a patented refresh feature.
- High Temperature Operation: Qualified for operation up to 125°C, including automotive grade versions.
- 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 (VDE V 0884-10): 2006-12, VIORM = 560 V peak.
Applications
- Size-Critical Multichannel Isolation: Ideal for applications where space is limited but multiple isolation channels are required.
- SPI Interface/Data Converter Isolation: Suitable for isolating SPI interfaces and data converters.
- RS-232/RS-422/RS-485 Transceiver Isolation: Used in serial communication systems to ensure isolation between transceivers.
- Digital Field Bus Isolation: Applicable in various field bus protocols to maintain signal integrity and isolation.
- Automotive Systems: Qualified for use in hybrid electric vehicles, battery monitors, and motor drives.
Q & A
- What is the maximum data rate supported by the ADuM1201ARZ?
The ADuM1201ARZ supports data rates up to 25 Mbps (NRZ).
- What is the operating temperature range of the ADuM1201ARZ?
The operating temperature range is from -40°C to 125°C).
- Does the ADuM1201ARZ support voltage translation?
Yes, it supports 3V/5V level translation across the isolation barrier).
- What is the package type of the ADuM1201ARZ?
The package type is SOIC-8).
- Is the ADuM1201ARZ qualified for automotive applications?
Yes, it is qualified for automotive applications, including hybrid electric vehicles, battery monitors, and motor drives).
- What regulatory approvals does the ADuM1201ARZ have?
It has 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 (VDE V 0884-10): 2006-12, and VIORM = 560 V peak).
- How does the ADuM1201ARZ ensure DC correctness?
It ensures DC correctness through a patented refresh feature that sends periodic pulses to the decoder in the absence of input logic transitions or during power-up/power-down conditions).
- What is the propagation delay of the ADuM1201ARZ?
The propagation delay (tPHL, tPLH) is between 15 ns and 55 ns for the BR grade, with CL = 15 pF and CMOS signal levels).
- Does the ADuM1201ARZ have high common-mode transient immunity?
Yes, it has high common-mode transient immunity of >25 kV/μs).
- What are some common applications of the ADuM1201ARZ?
Common applications include size-critical multichannel isolation, SPI interface/data converter isolation, RS-232/RS-422/RS-485 transceiver isolation, and digital field bus isolation).
