Overview
The ADuM7643ARQZ is a 6-channel digital isolator produced by Analog Devices Inc., utilizing the company's iCoupler technology. This device is designed to provide reliable and efficient isolation in various electronic systems. Packaged in a compact 20-lead QSOP, it offers significant space savings and a lower cost compared to higher isolation voltage solutions when only functional isolation is required. The ADuM7643ARQZ supports data rates up to 25 Mbps and operates with supply voltages ranging from 3.0 V to 5.5 V, making it versatile for different application environments.
Key Specifications
| Parameter | Symbol | Min | Typ | Max | Unit | Test Conditions/Comments |
|---|---|---|---|---|---|---|
| Input Voltage Threshold (Logic High) | VIH | 0.7 VDDx | V | |||
| Input Voltage Threshold (Logic Low) | VIL | 0.3 VDDx | V | |||
| Output Voltages (Logic High) | VOH | VDDx - 0.2 | VDDx - 0.5 | V | IOx = -20 µA, VIx = VIxH; IOx = -4 mA, VIx = VIxH | |
| Output Voltages (Logic Low) | VOL | 0.0 | 0.1 | 0.2 | V | IOx = 20 µA, VIx = VIxL; IOx = 4 mA, VIx = VIxL |
| Input Current per Channel | II | -10 | 0.01 | 10 | µA | 0 V ≤ VIx ≤ VDDx |
| Supply Current per Channel (Quiescent) | IDDI (Q), IDDO (Q) | 0.68, 0.55 | 0.87, 0.72 | mA | ||
| Dynamic Supply Current per Channel | IDDI (D), IDDO (D) | 0.19 | 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 |
Key Features
- High-Speed Data Transfer: Supports data rates up to 25 Mbps.
- Low Power Consumption: Uses one-tenth to one-sixth the power of other digital isolators.
- High Temperature Operation: Operates up to 105°C.
- High Common-Mode Transient Immunity: >15 kV/µs.
- Channel-by-Channel Glitch Filter: Protects against extraneous noise disturbances.
- 3 V/5 V Level Translation: Compatible with different voltage levels.
- Bidirectional Communication: Supports bidirectional data transfer.
- Compact Packaging: 20-lead QSOP package for space savings.
Applications
- General-Purpose Isolation: Suitable for various isolation needs.
- 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.
- Industrial Field Bus Isolation: Applies to industrial field bus systems.
- Automotive Interfaces: Can be used in automotive interfaces such as CAN, audio, and Ethernet.
- Industrial I/O and IO-Link: Suitable for industrial input/output and IO-Link applications.
Q & A
- What is the maximum data rate supported by the ADuM7643ARQZ?
The ADuM7643ARQZ supports data rates up to 25 Mbps.
- What is the operating temperature range of the ADuM7643ARQZ?
The device operates up to 105°C.
- What is the common-mode transient immunity of the ADuM7643ARQZ?
The common-mode transient immunity is greater than 15 kV/µs.
- Does the ADuM7643ARQZ support bidirectional communication?
Yes, it supports bidirectional data transfer.
- What are the supply voltage ranges for the ADuM7643ARQZ?
The supply voltage ranges from 3.0 V to 5.5 V.
- What is the packaging type of the ADuM7643ARQZ?
The device is packaged in a 20-lead QSOP.
- Is the ADuM7643ARQZ suitable for industrial applications?
Yes, it is suitable for various industrial applications including industrial field bus and IO-Link.
- How does the ADuM7643ARQZ protect against noise disturbances?
The device includes a channel-by-channel glitch filter to protect against extraneous noise disturbances.
- What are some common applications of the ADuM7643ARQZ?
Common applications include general-purpose isolation, SPI interface/data converter isolation, and RS-232/RS-422/RS-485 transceivers.
- Does the ADuM7643ARQZ support 3 V/5 V level translation?
Yes, it supports 3 V/5 V level translation.
