Overview
The ADUM7640CRQZ is a 6-channel digital isolator produced by Analog Devices Inc. It is part of the ADuM7640/ADuM7641/ADuM7642/ADuM7643 family, which utilizes Analog Devices' iCoupler technology. These devices are designed to provide reliable and efficient digital isolation, making them suitable for a variety of applications where electrical isolation is critical. The ADUM7640CRQZ is packaged in a compact 20-lead QSOP, offering space savings and a lower cost compared to higher voltage isolation solutions.
Key Specifications
| Parameter | Symbol | Min | Typ | Max | Unit | Test Conditions/Comments |
|---|---|---|---|---|---|---|
| Isolation Voltage | VISO | - | - | 1000 | Vrms | - |
| Data Rate | - | - | - | 25 | Mbps | - |
| Supply Voltage | VDDx | 3.0 | - | 5.5 | V | - |
| 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 | - | 2.5 | - | ns | 10% to 90% |
| Common-Mode Transient Immunity | |CM| | - | - | 15-20 | kV/μs | VIx = VDDx, VCM = 1000 V, transient magnitude = 800 V |
| Input Voltage Threshold (Logic High) | VIH | - | 0.7 VDDx | - | V | - |
| Input Voltage Threshold (Logic Low) | VIL | - | 0.3 VDDx | - | V | - |
| Output Voltage (Logic High) | VOH | - | VDDx - 0.1 VDDx | - | V | IOx = -20 μA, VIx = VIxH |
| Output Voltage (Logic Low) | VOL | - | 0.0 - 0.1 VDDx | - | V | IOx = 20 μA, VIx = VIxL |
Key Features
- High-Speed Data Transfer: Up to 25 Mbps data rate (NRZ) for fast and reliable communication.
- Low Power Consumption: Very low power consumption, using one-tenth to one-sixth the power of other digital isolators.
- High Temperature Operation: Operates up to 105°C, making it suitable for high-temperature environments.
- High Common-Mode Transient Immunity: >15 kV/μs common-mode transient immunity to protect against noise disturbances.
- Channel-by-Channel Glitch Filter: Protects the device against extraneous noise disturbances.
- 3 V/5 V Level Translation: Supports level translation between 3 V and 5 V systems.
- Bidirectional Communication: Supports bidirectional communication for versatile application use.
Applications
- General-Purpose Isolation: Suitable for general-purpose isolation in various electronic 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 interfaces such as RS-232, RS-422, and RS-485.
- Industrial Field Bus Isolation: Applied in industrial field bus systems for reliable and isolated communication.
- Automotive Interfaces: Used in automotive interfaces such as CAN, audio, and Ethernet.
Q & A
- What is the maximum isolation voltage of the ADUM7640CRQZ?
The maximum isolation voltage is 1000 Vrms.
- What is the maximum data rate supported by the ADUM7640CRQZ?
The maximum data rate is up to 25 Mbps.
- What is the operating temperature range of the ADUM7640CRQZ?
The device operates up to 105°C.
- Does the ADUM7640CRQZ support level translation between different voltage levels?
Yes, it supports 3 V/5 V level translation.
- What is the common-mode transient immunity of the ADUM7640CRQZ?
The common-mode transient immunity is >15 kV/μs.
- Is the ADUM7640CRQZ suitable for high-speed applications?
Yes, it is suitable for high-speed applications with data rates up to 25 Mbps.
- What is the package type of the ADUM7640CRQZ?
The device is packaged in a 20-lead QSOP.
- Does the ADUM7640CRQZ have built-in glitch filters?
Yes, it has channel-by-channel glitch filters to protect against extraneous noise disturbances.
- What are some common applications of the ADUM7640CRQZ?
Common applications include general-purpose isolation, SPI interface/data converter isolation, RS-232/RS-422/RS-485 transceivers, and industrial field bus isolation.
- How does the ADUM7640CRQZ compare to other digital isolators in terms of power consumption?
The ADUM7640CRQZ consumes significantly less power, using one-tenth to one-sixth the power of other digital isolators.
