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AD7284WBSWZ-RL
AD7284WBSWZ-RL
| Part Number | AD7284WBSWZ-RL |
|---|---|
| Manufacturer | Analog Devices Inc. (ADI) |
| Category | Integrated Circuits (ICs) > PMIC – Battery Management / Data Acquisition |
| Description | Automotive-grade, high-precision 8-channel battery monitoring IC with integrated 14-bit SAR ADC, independent redundant measurement channel, and built-in cell balancing drivers for EV/HEV BMS systems. |
| Stock Status | In Stock |
| Origin | Original Factory |
Product Overview
The AD7284WBSWZ-RL is an automotive-grade, highly integrated lithium-ion battery monitoring data acquisition IC from Analog Devices Inc. Designed to meet strict functional safety standards for EV and HEV BMS, the device features 8 differential cell measurement channels. Its primary signal path uses a 14-bit SAR ADC that completes conversion for all 8 cell channels within 48 μs. A fully separate redundant secondary measurement channel is integrated to support ASIL functional safety requirements, enabling hardware cross-verification of cell voltage readings to detect internal device faults in real time. The IC integrates internal cell balance MOSFET drivers, comprehensive open-wire fault detection registers, and 4 auxiliary analog inputs for NTC thermistor temperature sampling. Packaged in lead-free LQFP-64-EP (10x10mm) with exposed thermal pad for improved heat dissipation, it provides reliable multi-cell voltage monitoring for automotive power battery packs.
Core Advantages
Dual Independent ADC Measurement Paths
Equipped with primary 14-bit SAR ADC array plus standalone redundant measurement channel; hardware dual-path comparison simplifies system-level ASIL functional safety certification.
High-Speed Differential Cell Sampling
Supports monitoring of up to 8 series lithium cells; full set of differential voltage conversions finished in 48 μs to minimize timing deviation between stacked cell measurements.
Integrated Passive Cell-Balancing Drivers
Built-in dedicated balance drive pins for each cell channel, directly driving passive balancing MOSFETs without extra external gate driver components on PCB.
Robust Automotive Fault Diagnostics
Hardware-based automatic fault detection covers open cell wires, overvoltage / undervoltage cell thresholds and SPI communication errors; fault flags transmitted via isolated high-speed SPI bus with CRC checksum.
Key Specifications
| Brand | Analog Devices Inc. (ADI) |
|---|---|
| RoHS Status | RoHS Compliant, Lead-Free; suffix Z indicates halogen-free lead-free construction |
| EDA/CAD Model | 3D STEP Model & PCB Footprint Available upon request |
| Warranty | 1-Year Standard Factory Warranty |
| Package / Case | LQFP-64-EP (10x10mm) |
| Mounting Type | Surface Mount SMD/SMT |
| Surface Marking / Silkscreen | AAD7284WBSWZ Marking |
| Number of Monitored Cells | 8 series cell channels per single device |
| ADC Resolution | 14-bit SAR ADC primary measurement channel |
| Total Sampling Speed Time | Multi-speed configurable cell conversion timing, adjustable acquisition time via internal register |
| Auxiliary Analog Inputs | 4 multi-purpose auxiliary analog inputs for NTC temperature sensing |
| Communication Protocol | Isolated SPI interface with built-in CRC error detection |
| Maximum Input Stack Voltage | Operating stack voltage range: 10 V ~ 40 V |
| Cell Balancing Controls | 8 integrated on-chip passive balance driver outputs |
| Operating Temperature Grade | AEC-Q100 Grade 2, operating temperature range: -40°C ~ +105°C ambient |
Typical Applications
- Electric Vehicle (EV) and Hybrid Electric Vehicle (HEV) Core Battery Management Systems (BMS)
- High-Voltage Grid-Scale Energy Storage Systems (ESS) and Industrial Backup Battery Banks
- Uninterruptible Power Supply (UPS) Balance Monitors and Centralized Telecom Power Storage Units
- Light Electric Vehicles (LEV), E-Bikes, and Heavy-Duty Automated Guided Vehicles (AGV) Power Packs
- Multi-Cell Consumer Battery Pack Testers, Profilers, and Manufacturing QA Inspection Racks
Order & Shipping Info
| Minimum Order Quantity (MOQ) | 1 Piece |
|---|---|
| Shipping Time | Shipped within 1-2 business days |
| Delivery Time | 3-7 working days worldwide |
| Shipping Methods | DHL, UPS, FedEx, EMS |
| Payment Methods | T/T (Bank Transfer), PayPal, Credit Card, Western Union |
Technical Support
For datasheet, sample requests, stock check, or bulk pricing, please use the Quick Inquiry form. We will reply within 24 hours.
Frequently Asked Questions
Q1: Is your current stock inventory of the AD7284WBSWZ-RL monitor chip fully authentic and factory-new?
A: Yes, we guarantee that all AD7284WBSWZ-RL ICs in our stock are 100% brand-new, factory-original parts from Analog Devices Inc., stored and shipped with full ESD protection and dry-pack moisture barrier packaging.
Q2: What is the primary operational advantage of the secondary independent measurement path in this IC?
A: The redundant secondary measurement channel independently samples cell voltages alongside the main ADC. Host MCU compares dual sets of readings to detect ADC drift or device internal faults, a mandatory hardware feature to achieve ASIL safety rating for automotive high-voltage battery systems.
Q3: What specific packaging configuration does the “-RL” suffix designator indicate?
A: Suffix -RL means parts are supplied on standard tape & reel packaging, compatible with high-speed automated SMT pick-and-place assembly equipment for mass production.
Q4: How can our engineering group download reference design schematic files, evaluation board user guides, or request volume tier pricing quotes?
A: Fill out the Quick Inquiry form on this page and state your project requirements. Our technical sales team will send datasheets, reference design materials and tiered bulk pricing within 24 hours.
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