Overview
The ADuM7641CRQZ is a 6-channel unidirectional digital isolator produced by Analog Devices Inc., utilizing the company's iCoupler technology. This device is designed to provide reliable and efficient isolation for digital signals, making it suitable for a variety of applications where electrical isolation is crucial. The ADuM7641CRQZ is packaged in a compact 20-lead QSOP, offering space savings and a lower cost compared to higher voltage isolation solutions when only functional isolation is required.
Key Specifications
| Parameter | Value | Unit | Test Conditions |
|---|---|---|---|
| Data Rate | Up to 25 Mbps | - | - |
| Supply Voltage | 3.0 V to 5.5 V | V | - |
| Maximum Current per Channel | 7.8 mA at 25 Mbps, 2.2 mA at 0-1 Mbps | mA | At 5 V operation |
| Output Rise/Fall Time | 2.5 ns (10% to 90%) | ns | - |
| Common-Mode Transient Immunity | >15 kV/μs | kV/μs | VCM = 1000 V, transient magnitude = 800 V |
| Input Voltage Threshold (Logic High) | 0.7 * VDDx | V | - |
| Input Voltage Threshold (Logic Low) | 0.3 * VDDx | V | - |
| Output Voltage (Logic High) | VDDx - 0.1 V | V | IOx = -20 μA |
| Output Voltage (Logic Low) | 0.0 to 0.1 V | V | IOx = 20 μA |
| Input Current per Channel | -10 to +10 μA | μA | 0 V ≤ VIx ≤ VDDx |
| Isolation Voltage | 1 kV RMS | V | - |
| Operating Temperature | -40°C to 105°C | °C | - |
Key Features
- High-Speed Data Transfer: Supports data rates up to 25 Mbps.
- Low Power Consumption: Uses significantly less power compared to other digital isolators, with maximum current per channel of 7.8 mA at 25 Mbps and 2.2 mA at 0-1 Mbps.
- High Common-Mode Transient Immunity: Greater than 15 kV/μs, ensuring robust performance in noisy environments.
- Channel-by-Channel Glitch Filter: Protects against extraneous noise disturbances.
- 3 V/5 V Level Translation: Compatible with both 3 V and 5 V logic levels.
- High Temperature Operation: Operates reliably from -40°C to 105°C.
- Compact Packaging: 20-lead QSOP package for space savings.
Applications
- General-Purpose Isolation: Suitable for various isolation needs in digital 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 requiring isolation.
- Industrial Field Bus Isolation: Applies to industrial field bus systems where electrical isolation is essential.
Q & A
- What is the maximum data rate supported by the ADuM7641CRQZ?
The ADuM7641CRQZ supports data rates up to 25 Mbps.
- What is the typical power consumption of the ADuM7641CRQZ?
The device consumes a maximum of 7.8 mA per channel at 25 Mbps and 2.2 mA per channel at 0-1 Mbps.
- What is the common-mode transient immunity of the ADuM7641CRQZ?
The device has a common-mode transient immunity greater than 15 kV/μs.
- What are the operating temperature ranges for the ADuM7641CRQZ?
The device operates from -40°C to 105°C.
- Does the ADuM7641CRQZ support 3 V and 5 V logic levels?
Yes, it supports both 3 V and 5 V level translation.
- What is the isolation voltage rating of the ADuM7641CRQZ?
The device has an isolation voltage rating of 1 kV RMS.
- What is the package type of the ADuM7641CRQZ?
The device is packaged in a 20-lead QSOP.
- Does the ADuM7641CRQZ have built-in glitch filters?
Yes, it has channel-by-channel glitch filters to protect against noise disturbances.
- What are some common applications of the ADuM7641CRQZ?
It is commonly used in general-purpose isolation, SPI interface/data converter isolation, RS-232/RS-422/RS-485 transceivers, and industrial field bus isolation.
- How does the ADuM7641CRQZ handle input voltage thresholds?
The input voltage thresholds are 0.7 * VDDx for logic high and 0.3 * VDDx for logic low.
