Features and Benefits
- 16-Bit Bidirectional Current Measurement
- 1.56µV LSB, ±51.2mV Dynamic Range
- 104µA LSB, ±3.4A Dynamic Range (RSNS = 15mΩ)
- Current Accumulation Register Resolution
- 6.25µVhr LSB, ±204.8mVh Range
- 0.417mAhr LSB, ±13.65Ah Range (RSNS = 15mΩ)
- 11-Bit Voltage Measurement
- 4.88mV LSB, 0V to 5V Input Range
- 11-Bit Temperature Measurement
- 0.125°C Resolution, -20°C to +70°C
- Industry Standard I²C Interface
- Low Power Consumption:
- Active Current: 70µA typical, 100µA max
- Sleep Current: 1µA typical, 3µA max
The DS2745 remains in production, however, for new projects, we recommend ModelGauge m5 MAX17055 fuel gauge.The DS2745 provides current-flow, voltage, and temperature measurement data to support battery-capacity monitoring in cost-sensitive applications. The DS2745 can be mounted on either the host side or pack side of the application. Current measurement and coulomb counting is accomplished by monitoring the voltage drop across an external sense resistor, voltage measurement is accomplished through a separate voltage-sense input, and temperature measurement takes place on-chip. A standard I²C interface with software programmable address gives the controlling microprocessor access to all data and status registers inside the DS2745. A low-power sleep mode state conserves energy when the cell pack is in storage.
- Handheld Products
Product Lifecycle Production
At least one model within this product family is in production and available for purchase. The product is appropriate for new designs but newer alternatives may exist.
Evaluation Kits (1)
The DS2745 evaluation kit (EV kit) makes performance evaluation, software development, and prototyping with the DS2745 Low-Cost I²C Battery Monitor easy. The evaluation board interfaces to a PC through a DS9123O USB Adapter and RJ-11 cable connection.
The DS2745 EV kit evaluation software gives the user complete control of all functions of the DS2745. Separate control tabs allow the user access to all RAM memory locations, all control registers, and real-time updates of all monitored parameters. The software also incorporates a data logging feature to monitor a cell over time.
The evaluation board circuit is designed to provide the DS2745 with accurate parameter measurements and protect the DS2745 from ESD damage.
- Handheld Products
Features & Benefits
- Demonstrates the capabilities of the DS2745 Low Cost I²C Battery Monitor, including:
- Temperature measurement
- Voltage measurement
- Current measurement
- Current accumulation
- Interfaces to the USB of a PC running Windows XP® or older operating system
Documentation & Resources
Tools & Simulations
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.
Sample & Buy
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Buy Now Pricing
(**) Displayed Buy Now Price and Price Range is based on small quantity orders.
(*)The 1Ku list pricing shown is for BUDGETARY USE ONLY, shown in United States dollars (FOB USA per unit for the stated volume), and is subject to change. International prices may differ due to local duties, taxes, fees and exchange rates. For volume-specific price or delivery quotes, please contact your local Analog Devices, Inc. authorized distributor. Pricing displayed for Evaluation Boards and Kits is based on 1-piece pricing.
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Pricing displayed is based on 1-piece. The USA list pricing shown is for budgetary use only, shown in United States dollars (FOB USA per unit), and is subject to change. International prices may vary due to local duties, taxes, fees and exchange rates.