ADBMS6822
PRODUCTIONSingle/Dual isoSPI Transceiver
- Part Models
- 4
- 1ku List Price
- Starting From $3.36
Part Details
- Up to 2 Mbps isolated bidirectional serial data communications
- Drop in compatible: single (ADBMS6821) and dual (ADBMS6822)
- Fully independent dual transceivers (ADBMS6822)
- Simple galvanic isolation using capacitors or transformers
- Bidirectional interface over a single twisted pair
- Supports cable lengths up to 100 meters
- Very low EMI susceptibility and emissions
- LPCM support for Analog Devices battery monitors
- Interrupt output for LPCM system wake-up
- 4 Mbps unidirectional mode
- Requires no software changes in most SPI systems
- Ultralow idle current
- Automatic interface wake-up detection
- Operating temperature range: –40°C to +125°C
- 3.0 V to 5.5 V isoSPI driver power supply
- 1.7 V to 5.5 V interface to microcontrollers
- 3.0 V to 30 V input for powering wake-up and monitoring functions (12 V battery compatible)
- Available in 32-lead, side solderable LFCSP package
- AEC-Q100 qualified for automotive applications
The ADBMS6821 (single) and ADBMS6822 (dual) provide bidirectional isolated serial port interface (isoSPI™) communications between two isolated devices through a single twisted pair connection for each data link. Each transceiver encodes logic states into signals that are transmitted across an isolation barrier to another transceiver. The receiving device decodes the transmission and drives the slave bus to the appropriate logic states. The isolation barrier can be bridged by capacitors or by a pulse transformer to achieve hundreds of volts of isolation.
The ADBMS6821/ADBMS6822 transceivers drive differential signals using matched source and sink currents, eliminating the requirement for a transformer center tap and reducing electromagnetic interference (EMI). Precision window comparators in the receiver detect the differential signals.
The transceivers can be paired with advanced Analog Devices, Inc., battery stack monitors to enable cell voltage and sensor monitoring even while the system controller is powered down (low power cell monitoring, or LPCM). The transceivers provide a timeout function that wake up or alert the system when a pass heartbeat message has not been received in the programmed time period.
Throughout the data sheet, all pin names refer to both transceivers on the ADBMS6822. For example, VDD refers to both VDD and VDD2.
Applications
- Electric and hybrid electric vehicles
- Backup battery systems
- Industrial networking
- Remote sensors
Documentation
Data Sheet 1
Technical Articles 1
Request an NDA
Complete documentation is available upon completion of a Non-Disclosure Agreement (NDA).
Request an NDAADI has always placed the highest emphasis on delivering products that meet the maximum levels of quality and reliability. We achieve this by incorporating quality and reliability checks in every scope of product and process design, and in the manufacturing process as well. "Zero defects" for shipped products is always our goal. View our quality and reliability program and certifications for more information.
| Part Model | Pin/Package Drawing | Documentation | CAD Symbols, Footprints, and 3D Models |
|---|---|---|---|
| ADBMS6822CCSZ | LFCSP SIDESOLDERABLE | ||
| ADBMS6822CCSZ-RL | 32-Lead Plastic Side Solderable QFN (5mm × 5mm) | ||
| ADBMS6822WCCSZ | 32-Lead Plastic Side Solderable QFN (5mm × 5mm) | ||
| ADBMS6822WCCSZ-RL | 32-Lead Plastic Side Solderable QFN (5mm × 5mm) |
This is the most up-to-date revision of the Data Sheet.
Evaluation Kits
Scalable BMS Kit for Cell and Pack Monitoring
Evaluating the ADBMS6822 Dual isoSPI® Adapter
72 V to 96 V Battery Management System for Electric 2- and 3-Wheelers
Low-cost Integrated BMS Monitor with On-board MCU and Dual isoSPI
Cell and Pack Monitoring Kit for Broad Market Applications
Latest Discussions
No discussions on ADBMS6822 yet. Have something to say?
Start a Discussion on EngineerZone®