LTC6811-1
PRODUCTION12 Channel Multicell Battery Monitor with Daisy Chain Interface, Generation 4
- Part Models
- 8
- 1ku List Price
- Starting From $12.30
Overview
- Pin-Compatible Upgrade from the LTC6804
- Measures Up to 12 Battery Cells in Series
- 1.2mV Maximum Total Measurement Error
- Stackable Architecture for High Voltage Systems
- Built-in isoSPI™ Interface
- 1Mb Isolated Serial Communications
- Uses a Single Twisted Pair, up to 100 Meters
- Low EMI Susceptibility and Emissions
- 290µs to Measure All Cells in a System
- Synchronized Voltage and Current Measurement
- 16-Bit ADC with Programmable Noise Filter
- Engineered for ISO 26262-Compliant Systems
- Passive Cell Balancing with Programmable Timer
- 5 General Purpose Digital I/O or Analog Inputs
- Temperature or other Sensor Inputs
- Configurable as an I2C or SPI master
- 4μA Sleep Mode Supply Current
- 48-Lead SSOP Package
- AEC-Q100 Qualified for Automotive Applications
The LTC6811 is a multicell battery stack monitor that measures up to 12 series connected battery cells with a total measurement error of less than 1.2mV. The cell measurement range of 0V to 5V makes the LTC6811 suitable for most battery chemistries. All 12 cells can be measured in 290µs, and lower data acquisition rates can be selected for high noise reduction.
Multiple LTC6811 devices can be connected in series, permitting simultaneous cell monitoring of long, high voltage battery strings. Each LTC6811 has an isoSPI interface for high speed, RF-immune, long distance communications. Using the LTC6811-1, multiple devices are connected in a daisy chain with one host processor connection for all devices. Using the LTC6811-2, multiple devices are connected in parallel to the host processor, with each device individually addressed.
The LTC6811 can be powered directly from the battery stack or from an isolated supply. The LTC6811 includes passive balancing for each cell, with individual PWM duty cycle control for each cell. Other features include an onboard 5V regulator, five general purpose I/O lines and a sleep mode, where current consumption is reduced to 4µA.
Applications
- Electric and Hybrid Electric Vehicles
- Backup Battery Systems
- Grid Energy Storage
- High Power Portable Equipment
Documentation
Data Sheet 1
User Guide 2
Technical Articles 1
Video 1
Brochure 1
Press Release 3
ADI 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 |
|---|---|---|---|
| LTC6811HG-1#3ZZPBF | 48-Lead SSOP | ||
| LTC6811HG-1#3ZZTRPBF | 48-Lead SSOP | ||
| LTC6811HG-1#PBF | 48-Lead SSOP | ||
| LTC6811HG-1#TRPBF | 48-Lead SSOP | ||
| LTC6811IG-1#3ZZPBF | 48-Lead SSOP | ||
| LTC6811IG-1#3ZZTRPBF | 48-Lead SSOP | ||
| LTC6811IG-1#PBF | 48-Lead SSOP | ||
| LTC6811IG-1#TRPBF | 48-Lead SSOP |
| Part Models | Product Lifecycle | PCN |
|---|---|---|
|
Nov 18, 2019 - 19_0266 Laser Top Mark for SSOP36/44/48 Packages assembled in ADPG and UTAC |
||
| LTC6811HG-1#3ZZPBF | PRODUCTION | |
| LTC6811HG-1#3ZZTRPBF | PRODUCTION | |
| LTC6811HG-1#PBF | PRODUCTION | |
| LTC6811HG-1#TRPBF | PRODUCTION | |
| LTC6811IG-1#3ZZPBF | PRODUCTION | |
| LTC6811IG-1#3ZZTRPBF | PRODUCTION | |
| LTC6811IG-1#PBF | PRODUCTION | |
| LTC6811IG-1#TRPBF | PRODUCTION | |
|
Jun 25, 2019 - 19_0135 LTC6811-1, LTC6811-2 Die Revision Change. |
||
| LTC6811HG-1#3ZZPBF | PRODUCTION | |
| LTC6811HG-1#3ZZTRPBF | PRODUCTION | |
| LTC6811HG-1#PBF | PRODUCTION | |
| LTC6811HG-1#TRPBF | PRODUCTION | |
| LTC6811IG-1#3ZZPBF | PRODUCTION | |
| LTC6811IG-1#3ZZTRPBF | PRODUCTION | |
| LTC6811IG-1#PBF | PRODUCTION | |
| LTC6811IG-1#TRPBF | PRODUCTION | |
This is the most up-to-date revision of the Data Sheet.
Software Resources
Can't find the software or driver you need?
Request a Driver/SoftwareHardware Ecosystem
| Parts | Product Life Cycle | Description |
|---|---|---|
| Interface Transceivers 1 | ||
| LTC6820 | PRODUCTION | isoSPI Isolated Communications Interface |
| MOSFET & Gate Drivers 1 | ||
| LTM9100 | NOT RECOMMENDED FOR NEW DESIGNS | Anyside™ High Voltage Isolated Switch Controller with I2C Command and Telemetry |
| Temperature Sensors 1 | ||
| LTC2983 | RECOMMENDED FOR NEW DESIGNS | Multi-Sensor High Accuracy Digital Temperature Measurement System |
Tools & Simulations
Linduino 1
Linduino is Analog Devices’ Arduino compatible system for developing and distributing firmware libraries and example code for our integrated circuits. Each Linduino-supported product includes an example main program, defined in the LTSketchbook/Part Number folder and driver code, defined in the LTSketchbook/libraries folder.
Linduino code repository on GitHub and instructions on how to use the code.
Evaluation Kits
LTC6811-1 Demo Board | 12-Channel Battery Stack Monitor with Daisy-chain Interface
Resources
LTC6811-1 Demo Board | 12-Channel Battery Stack Monitor with Daisy-chain Interface
Resources
LTC6820 isoSPI Demoboard (DC590B required)
Resources
LTC6820 isoSPI Demoboard (DC590B required)
Resources
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