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Product Detailed Parameters
- Description：IC ENERGY MONITOR I2C 16MSOP
- Series：-
- Mfr：Analog Devices Inc.
- Package：Tube
- Input Impedance：-
- Measurement Error：0.40%
- Voltage - I/O High：-
- Voltage - I/O Low：-
- Current - Supply：900µA
- Voltage - Supply：2.7 V ~ 100 V
- Meter Type：Single Phase
- Operating Temperature：-40°C ~ 85°C
- Mounting Type：Surface Mount
- Package / Case：16-TFSOP (0.118", 3.00mm Width)
- Supplier Device Package：16-MSOP
- Grade：-
- Qualification：-
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Overview
The LTC2946IMS#PBF is a single-channel rail-to-rail system monitor manufactured by Analog Devices Inc. It measures current, voltage, power, charge, and energy via an I2C interface. The device operates within a supply voltage range of 2.7V to 100V and features a common-mode voltage range of 2.7V to 100V. Key electrical specifications include a maximum input offset voltage of 77uV, a gain error of 0.4%, and a typical operating supply current of 700uA. It is housed in a 16-pin MSOP package with surface-mount installation.
Feature Summary
- Integrates on-board ADC for direct measurement of current, voltage, power, charge, and energy without external processing
- Supports wide common-mode voltage ranges up to 100V with rail-to-rail input capabilities
- Includes an internal shunt regulator designed to tolerate supply voltages exceeding 100V
Applications
- Monitoring -48V harsh environment power systems using INTVCC shunt regulators
- Negative power, charge, and energy monitoring for supplies ranging from -4V to -500V
- General rail-to-rail system monitoring for automotive and industrial applications
Procurement Notes
Verify the specific suffix #PBF indicates lead-free compliance and RoHS status before procurement. Confirm the 16-MSOP package dimensions match your PCB footprint requirements. Check official documentation for any recent PCN updates regarding material or bond wire changes that may affect long-term reliability.
Selection Notes
Select this component when high accuracy is required for cumulative energy and charge tracking rather than just instantaneous power. The integrated ADC simplifies firmware design by handling conversion internally. Ensure the system's common-mode voltage remains within the 2.7V to 100V limit for standard operation.
Part Context
This part belongs to the LTC2946 family of wide-range power monitors. It shares functional similarities with variants like the LTC2946HDE#PBF but differs in package type (MSOP vs DFN) and thermal characteristics. The IMS variant is specifically optimized for surface-mount assembly in compact designs requiring robust power management monitoring.
Replacement Considerations
Direct substitutes within the same series include LTC2946HMS#PBF and LTC2946IMS-1#PBF. Verify if the '-1' suffix is necessary for specific automotive or extended temperature requirements. Package compatibility between MSOP and DFN variants requires PCB layout adjustments.
