Overview
The ADUM7440CRQZ-RL7 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 compared to optocoupler devices and other integrated couplers. It is packaged in a small 16-lead QSOP, making it suitable for applications requiring compact and reliable digital isolation.
Key Specifications
| Parameter | Min | Typ | Max | Unit | Test Conditions |
|---|---|---|---|---|---|
| Isolation Rating | - | - | 1000 V rms | - | - |
| Operating Temperature | -40°C | - | 105°C | - | - |
| Supply Voltage | 3 V / 5 V | - | - | - | - |
| Quiescent Input Supply Current (IDDI(Q)) | 0.76 mA | - | 0.95 mA | - | 0 V ≤ VIx ≤ VDDx |
| Quiescent Output Supply Current (IDDO(Q)) | 0.57 mA | - | 0.73 mA | - | 0 V ≤ VIx ≤ VDDx |
| Dynamic Input Supply Current (IDDI(D)) | - | - | 0.26 mA/Mbps | - | - |
| Dynamic Output Supply Current (IDDO(D)) | - | - | 0.05 mA/Mbps | - | - |
| Data Rate | - | - | Up to 25 Mbps | - | - |
| Output Rise/Fall Time (tR/tF) | 2.0 ns | - | 10 ns | - | 10% to 90% |
| Common-Mode Transient Immunity | 15 kV/μs | - | 25 kV/μs | - | VIx = VDDx, VCM = 1000 V, transient magnitude = 800 V |
Key Features
- Small, 16-lead QSOP package
- 1000 V rms isolation rating
- Safety and regulatory approvals (UL 1577, VISO = 2500 V rms for 1 minute)
- Low power operation (e.g., 2.25 mA per channel maximum at 0 Mbps to 1 Mbps for 5 V operation)
- Bidirectional communication
- 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 ADUM7440CRQZ-RL7?
The ADUM7440CRQZ-RL7 has a 1000 V rms isolation rating. - What is the operating temperature range of the ADUM7440CRQZ-RL7?
The operating temperature range is from -40°C to 105°C. - What are the supported supply voltages for the ADUM7440CRQZ-RL7?
The component supports both 3 V and 5 V supply voltages. - What is the maximum data rate supported by the ADUM7440CRQZ-RL7?
The maximum data rate is up to 25 Mbps. - Does the ADUM7440CRQZ-RL7 support bidirectional communication?
Yes, it supports bidirectional communication. - What is the common-mode transient immunity of the ADUM7440CRQZ-RL7?
The common-mode transient immunity is greater than 15 kV/μs. - What are some typical applications for the ADUM7440CRQZ-RL7?
Typical applications include general-purpose multichannel isolation, SPI interface/data converter isolation, and industrial field bus isolation. - What package type is the ADUM7440CRQZ-RL7 available in?
The component is packaged in a small 16-lead QSOP. - Does the ADUM7440CRQZ-RL7 have any safety and regulatory approvals?
Yes, it has safety and regulatory approvals such as UL 1577 and VISO = 2500 V rms for 1 minute. - How does the ADUM7440CRQZ-RL7 compare to other isolation technologies?
The ADUM7440CRQZ-RL7 provides superior performance compared to optocoupler devices and other integrated couplers due to its high-speed CMOS and monolithic air core transformer technologies.
