LT2940
LT2940
PRODUCTIONPower and Current Monitor
- Part Models
- 8
- 1ku List Price
- Starting From $3.14
Viewing:
Overview
- Four-Quadrant Power Measurement
- ±5% Power Measurement Accuracy
- 4V to 80V High Side Sense, 100V Max
- Current Mode Power and Current Outputs
- Output Bandwidth Exceeds 500kHz
- ±3% Current Measurement Accuracy
- 6V to 80V Supply Range, 100V Max
- Inverting and Noninverting Open-Collector Comparator Outputs
- Available in 12-Pin DFN (3mm × 3mm) and 12-Lead MSOP Packages
The LT2940 measures a high side current and a differential voltage, multiplies them and outputs a current proportional to instantaneous power. Bidirectional high side currents and bipolar voltage differences are correctly handled by the four-quadrant multiplier and push-pull output stage, which allows the LT2940 to indicate forward and reverse power flow.
An integrated comparator with inverting and noninverting open-collector outputs makes the LT2940 a complete power level monitor. In addition, an output current proportional to the sensed high side current allows current monitoring. The current mode outputs make scaling, filtering and time integration as simple as selecting external resistors and/or capacitors.
Applications
- Board Level Power and Current Monitoring
- Line Card and Server Power Monitoring
- Power Sense Circuit Breaker
- Power Control Loops
- Power/Energy Meters
- Battery Charger Metering
Documentation
Data Sheet 1
User Guide 1
Technical Articles 1
Video 1
Product Selector Card 3
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 |
|---|---|---|---|
| LT2940CDD#PBF | 12-Lead DFN (3mm x 3mm w/ EP) | ||
| LT2940CDD#TRPBF | 12-Lead DFN (3mm x 3mm w/ EP) | ||
| LT2940CMS#PBF | 12-Lead MSOP | ||
| LT2940CMS#TRPBF | 12-Lead MSOP | ||
| LT2940IDD#PBF | 12-Lead DFN (3mm x 3mm w/ EP) | ||
| LT2940IDD#TRPBF | 12-Lead DFN (3mm x 3mm w/ EP) | ||
| LT2940IMS#PBF | 12-Lead MSOP | ||
| LT2940IMS#TRPBF | 12-Lead MSOP |
| Part Models | Product Lifecycle | PCN |
|---|---|---|
|
Jun 5, 2024 - 24_0003 Epoxy Change from Henkel 8290 to 8290A for MSOP Package (2) |
||
| LT2940CMS#PBF | PRODUCTION | |
| LT2940CMS#TRPBF | PRODUCTION | |
|
Feb 4, 2020 - 20_0129 Laser Mark Conversion for 12-Lead MSOP Packages Assembled in ADPG and UTAC |
||
| LT2940CMS#PBF | PRODUCTION | |
| LT2940CMS#TRPBF | PRODUCTION | |
| LT2940IMS#PBF | PRODUCTION | |
| LT2940IMS#TRPBF | PRODUCTION | |
|
Oct 11, 2022 - 22_0244 Epoxy Change from Henkel 8290 to 8290A for MSOP Package |
||
| LT2940IMS#PBF | PRODUCTION | |
| LT2940IMS#TRPBF | PRODUCTION | |
|
Apr 18, 2022 - 22_0050 UTAC Thai Limited (UTL) as Alternate Assembly Site for MSOP Packages / Devices |
||
| LT2940IMS#PBF | PRODUCTION | |
| LT2940IMS#TRPBF | PRODUCTION | |
This is the most up-to-date revision of the Data Sheet.
Software Resources
Can't find the software or driver you need?
Request a Driver/SoftwareHardware Ecosystem
| Parts | Product Life Cycle | Description |
|---|---|---|
| Analog to Digital Converters (ADCs) 1 | ||
| LTC2945 | RECOMMENDED FOR NEW DESIGNS | Wide Range I2C Power Monitor |
| Hot Swap Controllers 1 | ||
| LT4363 | RECOMMENDED FOR NEW DESIGNS | High Voltage Surge Stopper with Current Limit |
| Matched Resistors & Transistors 1 | ||
| LT5400 | RECOMMENDED FOR NEW DESIGNS | Quad Matched Resistor Network |
| RMS to DC Converters 1 | ||
| LTC1966 | PRODUCTION | Precision Micropower ΔΣ RMS-to-DC Converter |
Tools & Simulations
LTspice
Models for the following parts are available in LTspice:
- LT2940
LTspice® is a powerful, fast and free simulation software, schematic capture and waveform viewer with enhancements and models for improving the simulation of analog circuits.
