- Part Models
- 12
- 1ku List Price
- Starting From $2.77
LTC6820
PRODUCTIONisoSPI Isolated Communications Interface
Part Details
- AEC-Q100 Qualified for Automotive Applications
- 1Mbps Isolated SPI Data Communications
- Simple Galvanic Isolation Using Standard Transformers
- Bidirectional Interface Over a Single Twisted Pair
- Supports Cable Lengths Up to 100 Meters
- Very Low EMI Susceptibility and Emissions
- Configurable for High Noise Immunity or Low Power
- Engineered for ISO26262 Compliant Systems
- Requires No Software Changes in Most SPI Systems
- Ultralow, 2µA Idle Current
- Automatic Wake-Up Detection
- Operating Temperature Range: –40°C to 125°C
- 2.7V to 5.5V Power Supply
- Interfaces to All Logic from 1.7V to 5.5V
- Available in 16-Lead QFN and MSOP Packages
The LTC6820 provides bidirectional SPI communications between two isolated devices through a single twisted-pair connection. Each LTC6820 encodes logic states into signals that are transmitted across an isolation barrier to another LTC6820. The receiving LTC6820 decodes the transmission and drives the slave bus to the appropriate logic states. The isolation barrier can be bridged by a simple pulse transformer to achieve hundreds of volts of isolation.
The LTC6820 drives differential signals using matched source and sink currents, eliminating the requirement for a transformer center tap and reducing EMI. Precision window comparators in the receiver detect the differential signals. The drive currents and the comparator thresholds are set by a simple external resistor divider, allowing the system to be optimized for required cable lengths and desired signal-to-noise performance.
Applications
- Industrial Networking
- Battery Monitoring Systems
- Remote Sensors
Documentation
Data Sheet 1
Reliability Data 1
User Guide 4
Application Note 1
Technical Articles 5
Safety and Regulatory Compliance 1
Video 1
Circuit Note 1
Safety and Regulatory Compliance 1
Analog Dialogue 1
Webcast 1
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 |
---|---|---|---|
LTC6820HMS#3ZZPBF | 16-Lead MSOP | ||
LTC6820HMS#3ZZTRPBF | 16-Lead MSOP | ||
LTC6820HMS#PBF | 16-Lead MSOP | ||
LTC6820HMS#TRPBF | 16-Lead MSOP | ||
LTC6820HUD#PBF | 16-Lead QFN (3mm x 3mm x 0.75mm w/ EP) | ||
LTC6820HUD#TRPBF | 16-Lead QFN (3mm x 3mm x 0.75mm w/ EP) | ||
LTC6820IMS#3ZZPBF | 16-Lead MSOP | ||
LTC6820IMS#3ZZTRPBF | 16-Lead MSOP | ||
LTC6820IMS#PBF | 16-Lead MSOP | ||
LTC6820IMS#TRPBF | 16-Lead MSOP | ||
LTC6820IUD#PBF | 16-Lead QFN (3mm x 3mm x 0.75mm w/ EP) | ||
LTC6820IUD#TRPBF | 16-Lead QFN (3mm x 3mm x 0.75mm w/ EP) |
Part Models | Product Lifecycle | PCN |
---|---|---|
Oct 11, 2022 - 22_0244 Epoxy Change from Henkel 8290 to 8290A for MSOP Package |
||
LTC6820HMS#3ZZPBF | PRODUCTION | |
LTC6820HMS#3ZZTRPBF | PRODUCTION | |
LTC6820HMS#PBF | PRODUCTION | |
LTC6820HMS#TRPBF | PRODUCTION | |
LTC6820IMS#3ZZPBF | PRODUCTION | |
LTC6820IMS#3ZZTRPBF | PRODUCTION | |
LTC6820IMS#PBF | PRODUCTION | |
LTC6820IMS#TRPBF | PRODUCTION | |
Apr 18, 2022 - 22_0050 UTAC Thai Limited (UTL) as Alternate Assembly Site for MSOP Packages / Devices |
||
LTC6820HMS#3ZZPBF | PRODUCTION | |
LTC6820HMS#3ZZTRPBF | PRODUCTION | |
LTC6820HMS#PBF | PRODUCTION | |
LTC6820HMS#TRPBF | PRODUCTION | |
LTC6820IMS#3ZZPBF | PRODUCTION | |
LTC6820IMS#3ZZTRPBF | PRODUCTION | |
LTC6820IMS#PBF | PRODUCTION | |
LTC6820IMS#TRPBF | PRODUCTION | |
Jul 31, 2020 - 20_0245 Notification of Wafer Fab Location Change for 0.6µm BICMOS Process Devices from ADI Milpitas (Hillview) to Vanguard Int. (Taiwan) |
||
LTC6820HMS#3ZZPBF | PRODUCTION | |
LTC6820HMS#3ZZTRPBF | PRODUCTION | |
LTC6820HMS#PBF | PRODUCTION | |
LTC6820HMS#TRPBF | PRODUCTION | |
LTC6820HUD#PBF | PRODUCTION | |
LTC6820HUD#TRPBF | PRODUCTION | |
LTC6820IMS#3ZZPBF | PRODUCTION | |
LTC6820IMS#3ZZTRPBF | PRODUCTION | |
LTC6820IMS#PBF | PRODUCTION | |
LTC6820IMS#TRPBF | PRODUCTION | |
LTC6820IUD#PBF | PRODUCTION | |
LTC6820IUD#TRPBF | PRODUCTION | |
Feb 4, 2020 - 20_0132 Laser Top Mark for 16-Lead MSOP Packages Assembled in ADPG and UTAC |
||
LTC6820HMS#3ZZPBF | PRODUCTION | |
LTC6820HMS#3ZZTRPBF | PRODUCTION | |
LTC6820HMS#PBF | PRODUCTION | |
LTC6820HMS#TRPBF | PRODUCTION | |
LTC6820IMS#3ZZPBF | PRODUCTION | |
LTC6820IMS#3ZZTRPBF | PRODUCTION | |
LTC6820IMS#PBF | PRODUCTION | |
LTC6820IMS#TRPBF | PRODUCTION |
This is the most up-to-date revision of the Data Sheet.
Hardware Ecosystem
Parts | Product Life Cycle | Description |
---|---|---|
Battery Monitors & Fuel Gauges 3 | ||
LTC6804-1 | PRODUCTION | 12 Channel Multicell Battery Monitor with Daisy Chain Interface, Generation 3 |
LT8584 | RECOMMENDED FOR NEW DESIGNS | 2.5A Monolithic Active Cell Balancer with Telemetry Interface |
LTC3300-1 | RECOMMENDED FOR NEW DESIGNS | High Efficiency Bidirectional Multicell Battery Balancer |
Tools & Simulations
IBIS Model 1
Evaluation Kits
Reference Designs
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