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IEC 61000-4 certified compact, low power consumption digital isolator ADuM144x series features
Safe operation of electronic equipment in hazardous areas poses challenges beyond simple IC design, such as intrinsic safety and galvanic isolation.
Based on iCoupler technology, the ADuM144x micropower 4-channel digital isolators enable isolation designs without the cost, size, power, performance, and reliability challenges of optocouplers.
The ADuM144x series of digital isolators from Analog Devices have the following features:
- Intrinsically safe (IS) digital isolators certified to the IEC 60079-11:2011 standard
- High data rate and ultra-low power consumption
- Reduce the number of parts and realize a simple circuit
- Optimal product can be selected from the combination of output direction and output logic
1. Intrinsically safe (IS) digital isolator certified to IEC 60079-11:2011 standard
Intrinsically safe certified by CSA-Sira and IECEx, global testing and certification service organizations.
This makes it easier to respond to intrinsically safe, explosion-proof, etc.
| UL 1577 (Vms) | CSA/IEC 60950 | CSA/IEC 61010 3rd edition |
CSA/IEC 60601 | VDE-0884-10 | ATEX | IECEx | ||||
| 3k | 3.5k | basic | strengthen | basic | strengthen | 2 MOPPs | strengthen | |||
| ADuM144x 16 pin QSOPs |
● | - | ● | - | ● | ● | - | ● | ● | ● |
| ADuM144x 20 pin SSOP |
- | ● | ● | ● | - | - | ● | ● | ● | ● |
2. High data rate and ultra-low power consumption
The ADuM144x series has a maximum data rate of 2 Mbps.
The very low power consumption also enables isolation without compromising battery life in equipment that needs to run in the background for extended periods of time.
- Operating voltage: 3.3V (typ)
- Quiescent current per channel with refresh enabled: 5.6 μA
- Quiescent current per channel with refresh disabled: 0.3 µA
- Operating current per channel: 148μA/Mbps
- Operating voltage: 2.5V (typ)
- 3.4 µA quiescent current per channel with refresh enabled
- Quiescent current per channel with refresh disabled: 0.1 μA
- Operating current per channel: 117μA/Mbps
3. Reducing the number of parts and realizing a simple circuit
Since the numerous diodes and resistors used in conventional photocouplers are no longer required, printed circuit board space and component costs are reduced, while at the same time being freed from complex designs, simple circuits are realized.
| Product model number | ADuM144x | Photocoupler x 4 |
| power consumption (at 2 kSPS, 2.5 V operation) |
31 μW (with refresh) 5 μW (no refresh) |
~1,000 μW * |
| data rate | Up to 2Mbps | Up to 2 kSPS |
| part size | 30mm2
 |
120mm2
 |
* This number is an estimate to achieve a low power optocoupler, but typically operates outside of specification.
4. The optimal product can be selected from the combination of output direction and output logic
The ADuM144x series has multiple options for the four-channel output direction and output logic (High/Low).
Available in 16-pin QSOP and 20-pin SSOP packages, it saves approximately 70% board space compared to isolator products in wide-body SOIC packages.
A 2-channel ADuM124x series is also available.
| Product model number | ADuM1440 ADuM1445 |
ADuM1441 ADuM1446 |
ADuM1442 ADuM1447 |
| channel direction | 4 inputs / 0 outputs | 3 inputs / 1 output | 2 inputs / 2 outputs |
| default output | ADuM1440: high ADuM1445: low |
ADuM1441: high ADuM1446: low |
ADuM1442: high ADuM1447: low |
| Operating temperature range | -40°C to +125°C | -40°C to +125°C | -40°C to +125°C |
| package | ADuM144XARQZ: 16-lead QSOP / ADuM144XARSZ: 20-lead SSOP | ||
| Insulator pressure | ADuM144XARQZ: 2.5 kV rms / ADuM144XARSZ: 3.75 kV rms | ||
What is iCoupler technology? Comparison video of magnetic isolation and photocoupler
Watch a video explaining the magnetic isolation scheme based on iCoupler technology. By watching this video, you can understand the difference from photocouplers that are easily compared.
"EVAL-ADuM1441EBZ" module ready for evaluation
The EVAL-ADuM1441EBZ evaluation module is intrinsically safe certified at the component level to evaluate the ADuM144x series of high data rate, ultra-low power digital isolators.
This evaluation board supports the ADuM144x series in a 16-pin QSOP package.
The JEDEC standard layout supports signal distribution, loopbacks, bypass capacitors, supply voltage or ground referenced loads. Signal sources can be routed to the board through SMA connectors or terminal blocks for power connections.
The board also provides 200mil header locations for compatibility with Tektronix active probes.
Application example
- General Purpose Low Power Multichannel Isolation
- 1MHz, low power SPI interface
- 4mA to 20mA loop process control
Product Summary
| product name | ADuM144x series |
| Features |
|
Click here for product price information and availability
ADuM144x series
EVAL-ADuM1441EBZ
ADuM124x series
EVAL-ADuM1241EBZ
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