Overview
The LTC6811IG-1#TRPBF, produced by Analog Devices Inc., is a multicell battery stack monitor designed to measure up to 12 series-connected battery cells with high accuracy. This device is suitable for various battery chemistries due to its cell measurement range of 0V to 5V. It is particularly useful in applications requiring precise monitoring of battery stacks, such as in electric vehicles, renewable energy systems, and other high-voltage battery applications.
Key Specifications
| Parameter | Value |
|---|---|
| Number of Cells Monitored | Up to 12 series-connected cells |
| Cell Measurement Range | 0V to 5V |
| Total Measurement Error | Less than 1.2mV |
| Data Acquisition Time | 290µs (minimum) |
| Operating Temperature Range | –40°C to 85°C (LTC6811IG-1) |
| Supply Voltage (V+) | 11V to 55V |
| VREG Supply Voltage | 4.5V to 5.5V |
| Package Type | 48-Lead Plastic SSOP |
| Communication Interface | isoSPI |
Key Features
- High-speed, RF-immune isoSPI interface for long-distance communications.
- Ability to measure all 12 cells in 290µs, with adjustable data acquisition rates for noise reduction.
- Multiple LTC6811 devices can be connected in series for monitoring long, high-voltage battery strings.
- Suitable for most battery chemistries due to its wide cell measurement range.
- Automotive-grade versions available with controlled manufacturing for reliability and quality.
Applications
- Electric and hybrid electric vehicles.
- Renameable energy systems, such as solar and wind power storage.
- High-voltage battery systems in industrial and commercial applications.
- Battery management systems (BMS) in various industries.
- Energy storage systems (ESS) requiring precise battery monitoring.
Q & A
- What is the maximum number of battery cells the LTC6811IG-1 can monitor?
The LTC6811IG-1 can monitor up to 12 series-connected battery cells. - What is the total measurement error of the LTC6811IG-1?
The total measurement error is less than 1.2mV. - What is the cell measurement range of the LTC6811IG-1?
The cell measurement range is from 0V to 5V. - How quickly can the LTC6811IG-1 measure all 12 cells?
All 12 cells can be measured in 290µs. - What is the operating temperature range of the LTC6811IG-1?
The operating temperature range is –40°C to 85°C. - What type of communication interface does the LTC6811IG-1 use?
The LTC6811IG-1 uses an isoSPI interface. - Can multiple LTC6811 devices be connected in series?
Yes, multiple LTC6811 devices can be connected in series for monitoring long, high-voltage battery strings. - Is the LTC6811IG-1 suitable for automotive applications?
Yes, automotive-grade versions of the LTC6811IG-1 are available with controlled manufacturing for reliability and quality. - What is the package type of the LTC6811IG-1?
The package type is a 48-Lead Plastic SSOP. - What is the supply voltage range for the V+ input of the LTC6811IG-1?
The supply voltage range for V+ is 11V to 55V.
