ADES1754/ADES1755/ADES1756: 14-Channel, High Voltage Data Acquisition Systems
In the ADES1754/ADES1755/ADES1756, cell and bus-bar voltages ranging from -2.5V to +5V are measured differentially over a 65V common-mode range, with a typical accuracy of 100μV. If oversampling is enabled, up to 128 measurements per channel can be averaged internally with 14-bit resolution and combined with digital post-processing IIR filtering for increased noise immunity.
The system can shut itself down in the event of a thermal overload by measuring its own die temperature. The system uses Analog Devices' battery-management UART protocol for robust communications and supports an I2C controller interface for external device control. It is optimized to support a reduced feature set of internal diagnostics and rapid-alert communication through both embedded communication and hardware-alert interfaces.
Key Features and Benefits
- 65V Operating Voltage
- Ultra-Low Power Operation
- Shutdown Mode: 2μA
- RedundantADC and Comparator (COMP) Acquisitions
- Simultaneous Cell and Bus-Bar Voltage Acquisitions
- 14 Cell-Voltage Measurement Channels
- 2.2mV/5mV/10mV Accuracy (-40°C to +105°C)
- 1.8mV Accuracy (+5°C to +65°C)
- 14 Cell-Balancing Switches
- >300mA Software-Programmable BalancingCurrent
- Automated Balancing with Individual Cell Timers
- Automated Balancing by Cell Voltage
- Emergency Discharge Mode
- Six Configurable Auxiliary Inputs for Temperature,Voltage, or GPIO
- Integrated Die Temperature Measurement
- Automatic Thermal Protection
- Hot Plug-Tolerant without External Protection
- Individually Configurable Safety Alerts
- Overvoltage, Undertemperature Faults
- Undervoltage, Overtemperature Faults
- 1-Cell Mismatch Alert
- UART, Dual UART Interface
- Battery-Management UART Protocol
- Daisy-Chain up to 32 Devices
- Inductive for Higher Galvanic Isolation
- Up to 2Mbps Baud Rate (Auto-Detect)
- 1.5μs Propagation Delay per Device
- Packet-Error Checking (PEC)
- I2C Controller
- Configurable Hardware-Alert Interfaces
- 32-Bit Unique Device ID
Applications
- Residential Battery Storage Systems
- High-Voltage Battery Stacks
- Battery-Backup Systems (UPS)
- Super-Cap Systems EV Charging
Evaluation Board
Block Diagrams and Tables
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