LTC6811HG-2#3ZZTRPBF

Overview

The LTC6811HG-2#3ZZTRPBF is a 12-channel multicell battery stack monitor manufactured by Analog Devices Inc. It measures up to 12 series-connected cells with a maximum total measurement error of 1.2mV and a cell voltage range of 0V to 5V. The device features an isoSPI interface for high-speed, RF-immune communication over twisted pairs up to 100 meters. It supports parallel addressing for multiple devices, passive cell balancing, and includes a 5V regulator. Operating temperatures range from -40°C to +125°C in a 48-pin SSOP package.

Feature Summary

• Supports measurement of up to 12 series-connected battery cells with low total measurement error
• Features isoSPI interface for isolated, high-speed serial communication resistant to RF interference
• Enables parallel addressing architecture allowing multiple devices to connect independently to the host processor
• Includes passive cell balancing capabilities with programmable timing control

Applications

• Electric vehicle and hybrid electric vehicle battery management systems
• Stationary backup battery energy storage systems
• Grid-scale energy storage applications
• High-power portable equipment requiring multi-cell monitoring

Procurement Notes

Verify the specific suffix #3ZZTRPBF against official Analog Devices documentation to confirm tape-and-reel packaging and lead-free status. Ensure compatibility with the target system's voltage levels and communication requirements before procurement. Cross-reference the manufacturer part number with authorized distributors to avoid counterfeit components.

Selection Notes

Select this component when monitoring up to 12 series cells is required with high accuracy and isolation. The LTC6811HG-2 variant allows parallel addressing, simplifying wiring compared to daisy-chain configurations. Consider the operating temperature range and package size constraints during PCB layout. Verify that the isoSPI interface matches the host controller's capabilities or requires an adapter.

Part Context

This part belongs to the LTC6811 family of battery stack monitors designed for industrial and automotive applications. It serves as a pin-compatible upgrade from earlier generations like the LTC6804. The device integrates precision ADCs and analog front-end circuitry to provide comprehensive cell voltage monitoring and balancing functions within a single integrated circuit solution.

Replacement Considerations

Check for direct replacements within the LTC6811 family such as the LTC6811HG-1#3ZZTRPBF for daisy-chain applications. Verify functional equivalence regarding channel count, accuracy, and interface type before substitution. Consult official datasheets for any changes in pinout or electrical characteristics.