Overview
The ADUM3201WCRZ-RL7 is a dual-channel digital isolator produced by Analog Devices Inc., utilizing the company's iCoupler technology. This component combines high-speed CMOS and monolithic transformer technology to provide superior performance characteristics compared to traditional optocoupler devices. The ADUM3201WCRZ-RL7 eliminates the design difficulties associated with optocouplers, such as uncertain current transfer ratios, nonlinear transfer functions, and temperature and lifetime effects. It operates with 3.3 V and 5 V supply voltages and supports data rates up to 25 Mbps.
Key Specifications
| Parameter | Symbol | Min | Typ | Max | Unit | Test Conditions/Comments |
|---|---|---|---|---|---|---|
| Data Rate | - | 1 | 10 | 25 | Mbps | Within PWD limit |
| Propagation Delay | tPHL, tPLH | 15 | 50 | 55 | ns | 50% input to 50% output |
| Pulse Width Distortion | PWD | 3 | 4 | 4 | ns | |tPLH − tPHL| |
| Output Rise/Fall Time | tR/tF | 3.0 | 3.0 | 3.0 | ns | 10% to 90% |
| Supply Current (IDD1) | - | 0.7 | 1.3 | 1.5 | mA | No load, VDD1 = 3.3 V |
| Supply Current (IDD2) | - | 0.8 | 1.6 | 1.9 | mA | No load, VDD2 = 5.0 V |
| Logic High Input Threshold | VIH | 0.7 VDDx | - | - | V | - |
| Logic Low Input Threshold | VIL | 0.3 VDDx | - | - | V | - |
| Logic High Output Voltages | VOH | VDDx − 0.1 VDDx | - | - | V | IOx = −20 µA, VIx = VIxH |
Key Features
- Bidirectional Communication: Supports bidirectional data transfer between isolated channels.
- High Data Rate: Operates at data rates up to 25 Mbps (NRZ).
- Precise Timing Characteristics: Offers low pulse width distortion (3 ns maximum) and channel-to-channel matching (3 ns maximum).
- High Common-Mode Transient Immunity: Provides immunity to common-mode transients greater than 25 kV/μs.
- Low Power Consumption: Consumes significantly less power compared to optocouplers at comparable data rates.
- 3.3 V/5 V Level Translation: Supports level translation between 3.3 V and 5 V systems.
- Safety and Regulatory Approvals: Meets 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.
Applications
- Size-Critical Multichannel Isolation: Ideal for applications where space is limited.
- 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 RS-232, RS-422, and RS-485 transceivers.
- Digital Field Bus Isolation: Used in digital field bus applications for reliable data transmission.
- Hybrid Electric Vehicles and Battery Monitoring: Qualified for automotive applications, including hybrid electric vehicles and battery monitoring systems.
Q & A
- What is the ADUM3201WCRZ-RL7 used for?
The ADUM3201WCRZ-RL7 is a dual-channel digital isolator used for isolating digital signals in various applications, including SPI interfaces, RS-232/RS-422/RS-485 transceivers, and digital field buses.
- What is the maximum data rate supported by the ADUM3201WCRZ-RL7?
The ADUM3201WCRZ-RL7 supports data rates up to 25 Mbps.
- What are the supply voltage requirements for the ADUM3201WCRZ-RL7?
The component operates with 3.3 V and 5 V supply voltages.
- What is the typical power consumption of the ADUM3201WCRZ-RL7?
The typical power consumption is around 1.3 mA per channel at 3.3 V and 1.6 mA per channel at 5 V, depending on the data rate.
- Does the ADUM3201WCRZ-RL7 support bidirectional communication?
Yes, it supports bidirectional communication between isolated channels.
- What safety and regulatory approvals does the ADUM3201WCRZ-RL7 have?
The component meets 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.
- Is the ADUM3201WCRZ-RL7 suitable for automotive applications?
Yes, it is qualified for automotive applications, including hybrid electric vehicles and battery monitoring systems.
- How does the ADUM3201WCRZ-RL7 compare to optocouplers in terms of performance?
The ADUM3201WCRZ-RL7 offers superior performance characteristics compared to optocouplers, including stable and linear transfer functions, lower power consumption, and higher data rates.
- What is the common-mode transient immunity of the ADUM3201WCRZ-RL7?
The component provides immunity to common-mode transients greater than 25 kV/μs.
- What is the output rise/fall time of the ADUM3201WCRZ-RL7?
The output rise/fall time is 3.0 ns (10% to 90%).
