Overview
The ADUM7441ARQZ is a 4-channel digital isolator produced by Analog Devices Inc., utilizing the iCoupler® technology. This component combines high-speed CMOS and monolithic air core transformer technologies to provide superior performance characteristics compared to optocoupler devices and other integrated couplers. The ADUM7441 is part of the ADuM7440/ADuM7441/ADuM7442 family, which is known for its high isolation rating, low power operation, and high common-mode transient immunity.
Key Specifications
| Parameter | Symbol | Min | Typ | Max | Unit | Test Conditions |
|---|---|---|---|---|---|---|
| Isolation Rating | VISO | 1000 | V rms | UL 1577: 1000 V rms for 1 minute | ||
| Supply Current (5V, 0 Mbps to 1 Mbps) | IDD1 | 4.1 | 4.9 | 18 | mA | Per channel |
| Supply Current (5V, 25 Mbps) | IDD1 | 18 | 26 | 26 | mA | Per channel |
| Supply Current (3.3V, 0 Mbps to 1 Mbps) | IDD1 | 2.8 | 3.5 | 14 | mA | Per channel |
| Supply Current (3.3V, 25 Mbps) | IDD1 | 14 | 20 | 20 | mA | Per channel |
| Data Rate | 1 | 25 | Mbps | |||
| Propagation Delay | tPHL, tPLH | 30 | 55 | 80 | ns | 50% input to 50% output |
| Common-Mode Transient Immunity | |CM| | 15 | 25 | kV/μs | VIx = VDDx, VCM = 1000 V, transient magnitude = 800 V | |
| Operating Temperature | -40 | 105 | °C |
Key Features
- Small, 16-lead QSOP package
- 1000 V rms isolation rating with UL 1577 recognition
- Low power operation: 2.25 mA per channel at 0 Mbps to 1 Mbps (5V), 1.5 mA per channel at 0 Mbps to 1 Mbps (3.3V)
- Bidirectional communication with up to 25 Mbps data rate (NRZ)
- 3 V/5 V level translation
- High temperature operation: up to 105°C
- High common-mode transient immunity: >15 kV/μs
Applications
- General-purpose, multichannel isolation
- SPI interface/data converter isolation
- RS-232/RS-422/RS-485 transceivers
- Industrial field bus isolation
Q & A
- What is the isolation rating of the ADUM7441ARQZ?
The ADUM7441ARQZ has a 1000 V rms isolation rating with UL 1577 recognition for 1000 V rms for 1 minute.
- What are the typical supply currents for the ADUM7441ARQZ at different data rates?
At 5V, the supply current is 4.1 mA to 4.9 mA per channel at 0 Mbps to 1 Mbps, and up to 26 mA per channel at 25 Mbps. At 3.3V, it is 2.8 mA to 3.5 mA per channel at 0 Mbps to 1 Mbps, and up to 20 mA per channel at 25 Mbps.
- What is the maximum data rate supported by the ADUM7441ARQZ?
The ADUM7441ARQZ supports up to 25 Mbps data rate (NRZ).
- What is the operating temperature range of the ADUM7441ARQZ?
The operating temperature range is -40°C to 105°C.
- What are some common applications of the ADUM7441ARQZ?
Common applications include general-purpose multichannel isolation, SPI interface/data converter isolation, RS-232/RS-422/RS-485 transceivers, and industrial field bus isolation.
- What is the package type of the ADUM7441ARQZ?
The ADUM7441ARQZ is packaged in a small 16-lead QSOP.
- Does the ADUM7441ARQZ support bidirectional communication?
Yes, the ADUM7441ARQZ supports bidirectional communication.
- What is the common-mode transient immunity of the ADUM7441ARQZ?
The common-mode transient immunity is greater than 15 kV/μs.
- Does the ADUM7441ARQZ require any external components for operation?
Yes, a ceramic bypass capacitor of value 0.01 μF to 0.1 μF is recommended between VDD2A and GND2.
- What regulatory approvals does the ADUM7441ARQZ have?
The ADUM7441ARQZ has UL 1577 recognition.
