Overview
The ADUM7643CRQZ-RL7 is a 6-channel digital isolator produced by Analog Devices Inc., utilizing the company's proprietary iCoupler® technology. This device is designed to provide reliable and efficient digital isolation, making it suitable for a variety of applications where electrical isolation is crucial. Packaged in a compact 20-lead QSOP, the ADUM7643CRQZ-RL7 offers significant space savings and a lower cost compared to higher voltage isolation solutions, making it an attractive option for systems requiring functional isolation.
Key Specifications
| Parameter | Symbol | Min | Typ | Max | Unit | Test Conditions/Comments |
|---|---|---|---|---|---|---|
| Pulse Width | PW | 250 | - | 40 | ns | Within PWD limit |
| Data Rate | - | - | - | 25 | Mbps | Within PWD limit |
| Propagation Delay | tPHL, tPLH | 75 | 28 | 40 | ns | 50% input to 50% output |
| Pulse Width Distortion | PWD | 25 | - | 6 | ns | |tPLH − tPHL| |
| Dynamic Supply Current (Input) | IDDI (D) | - | 0.19 | - | mA/Mbps | - |
| Dynamic Supply Current (Output) | IDDO (D) | - | 0.03 | - | mA/Mbps | - |
| Output Rise/Fall Time | tR/tF | - | 2.8 | - | ns | 10% to 90% |
| Common-Mode Transient Immunity | |CM| | 15 | - | 20 | kV/μs | VIx = VDDx, VCM = 1000 V, transient magnitude = 800 V |
| Refresh Rate | fr | - | 550 | - | kHz | DC data inputs |
| Operating Temperature | TA | -40 | - | 105 | °C | - |
| Supply Voltage | VDD1, VDD2 | 4.5 | - | 5.5 | V | - |
Key Features
- High-Speed Data Transfer: Up to 25 Mbps data rate (NRZ) for efficient communication.
- Low Power Consumption: Uses one-tenth to one-sixth the power of other digital isolators, with dynamic supply currents as low as 0.19 mA/Mbps for input and 0.03 mA/Mbps for output.
- High Temperature Operation: Operates reliably up to 105°C.
- High Common-Mode Transient Immunity: Greater than 15 kV/μs, ensuring robust performance in noisy environments.
- Space-Saving Package: Compact 20-lead QSOP package for reduced board space.
- Bidirectional Communication: Supports bidirectional data transfer.
- Level Translation: Compatible with both 3 V and 5 V logic levels.
Applications
- General-Purpose Isolation: Suitable for various isolation needs in industrial and commercial systems.
- SPI Interface/Data Converter Isolation: Ideal for isolating SPI interfaces and data converters.
- RS-232/RS-422/RS-485 Transceivers: Used in serial communication systems requiring isolation.
- Industrial Field Bus Isolation: Applies to industrial field bus systems such as CAN, Ethernet, and others.
Q & A
- What is the maximum data rate of the ADUM7643CRQZ-RL7?
The maximum data rate is up to 25 Mbps (NRZ). - What is the operating temperature range of the ADUM7643CRQZ-RL7?
The device operates reliably from -40°C to 105°C. - What is the common-mode transient immunity of the ADUM7643CRQZ-RL7?
The common-mode transient immunity is greater than 15 kV/μs. - What package type is the ADUM7643CRQZ-RL7 available in?
The device is packaged in a 20-lead QSOP. - Is the ADUM7643CRQZ-RL7 suitable for high-speed applications?
Yes, it supports high-speed data transfer up to 25 Mbps. - Does the ADUM7643CRQZ-RL7 support bidirectional communication?
Yes, it supports bidirectional data transfer. - What are the typical supply voltages for the ADUM7643CRQZ-RL7?
The typical supply voltages are 4.5 V to 5.5 V for both VDD1 and VDD2. - How does the ADUM7643CRQZ-RL7 compare to other digital isolators in terms of power consumption?
The ADUM7643CRQZ-RL7 uses significantly less power, one-tenth to one-sixth of other digital isolators. - What are some common applications of the ADUM7643CRQZ-RL7?
Common applications include general-purpose isolation, SPI interface/data converter isolation, RS-232/RS-422/RS-485 transceivers, and industrial field bus isolation. - Is the ADUM7643CRQZ-RL7 compatible with both 3 V and 5 V logic levels?
Yes, it supports level translation between 3 V and 5 V logic levels.
