Overview
The ISO7041DBQR, produced by Texas Instruments, is an ultra-low power, four-channel digital isolator designed to isolate CMOS or LVCMOS digital I/Os. This device features a robust isolation barrier with a 3000 VRMS isolation rating, making it suitable for applications requiring high electrical isolation and low power consumption. The ISO7041DBQR operates over a wide supply voltage range from 1.71 V to 5.5 V and supports data rates up to 4 Mbps. It is particularly useful in power and thermally constrained system designs due to its low quiescent current of 3.5 μA per channel at 3.3 V.
Key Specifications
| Parameter | Value | Unit |
|---|---|---|
| Quiescent Current per Channel | 3.5 μA | at 3.3 V |
| Dynamic Current per Channel | 15 μA at 100 kbps, 116 μA at 1 Mbps | at 3.3 V |
| Isolation Rating | 3000 VRMS | |
| Supply Voltage Range | 1.71 V to 1.89 V, 2.25 V to 5.5 V | |
| Operating Temperature Range | -55°C to +105°C (1.71 V to 1.89 V), -55°C to +125°C (2.25 V to 5.5 V) | |
| Data Rate | Up to 4 Mbps | |
| Package | 16-QSOP (DBQ-16) | |
| Default Output | High (ISO7041), Low (ISO7041F) | |
| ESD Protection | ±8 kV IEC 61000-4-2 contact discharge protection | |
| Safety Certifications | UL 1577, DIN VDE V 0884-11, CQC, TUV, CSA, IECEx, ATEX |
Key Features
- Ultra-low power consumption with 3.5 μA quiescent current per channel at 3.3 V.
- Robust isolation barrier with >100-year projected lifetime and 3000 VRMS isolation rating.
- Wide supply voltage range: 1.71 V to 1.89 V and 2.25 V to 5.5 V.
- Wide operating temperature range: -55°C to +105°C (1.71 V to 1.89 V) and -55°C to +125°C (2.25 V to 5.5 V).
- High data rate support up to 4 Mbps.
- Small 16-QSOP package (DBQ-16).
- Default output high (ISO7041) and low (ISO7041F) options.
- Robust electromagnetic compatibility (EMC) with system-level ESD, EFT, and surge immunity.
- Low emissions and high common-mode transient immunity (CMTI) of ±100 kV/μs typical.
Applications
- 4-mA to 20-mA loop powered field transmitters.
- Factory automation and process automation.
- Low-power GPIO, UART, and SPI isolation.
Q & A
- What is the quiescent current consumption of the ISO7041DBQR per channel at 3.3 V?
The quiescent current consumption is 3.5 μA per channel at 3.3 V.
- What is the maximum data rate supported by the ISO7041DBQR?
The device supports data rates up to 4 Mbps.
- What is the isolation rating of the ISO7041DBQR?
The isolation rating is 3000 VRMS.
- What are the default output options for the ISO7041DBQR?
The default output options are high (ISO7041) and low (ISO7041F).
- What are the safety certifications for the ISO7041DBQR?
The device is certified according to UL 1577, DIN VDE V 0884-11, CQC, TUV, CSA, IECEx, and ATEX standards.
- What is the operating temperature range for the ISO7041DBQR?
The operating temperature range is -55°C to +105°C (1.71 V to 1.89 V) and -55°C to +125°C (2.25 V to 5.5 V).
- What is the package type of the ISO7041DBQR?
The device comes in a 16-QSOP (DBQ-16) package.
- Does the ISO7041DBQR have ESD protection?
Yes, it has ±8 kV IEC 61000-4-2 contact discharge protection across the isolation barrier.
- What are some typical applications of the ISO7041DBQR?
Typical applications include 4-mA to 20-mA loop powered field transmitters, factory automation, process automation, and low-power GPIO, UART, and SPI isolation.
- How does the ISO7041DBQR ensure robust electromagnetic compatibility (EMC)?
The device ensures robust EMC through system-level ESD, EFT, and surge immunity, along with very low emissions.
