LTC6115

RECOMMENDED FOR NEW DESIGNS

High Voltage High Side Current and Voltage Sense

Data Sheet (Rev. B) Product Selection Table

Part Models: 6
1ku List Price: Starting From $1.90

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Overview

Current Sense

Supply Range: 5V to 100V
Low Offset Voltage: ±500µV (Maximum)
1µs Response Time
Gain Configurable with 2 Resistors
Low Input Bias Current: 170nA (Maximum)
PSRR: 118dB (Minimum)
Low Supply Current: 250µA

Voltage Sense

Voltage Sense Range: 0V to 100V
Precision 1MΩ Resistor Divider
Low Total Gain Error: ±0.15% (Maximum)
Supply Voltage Range: 2.7V to 5.5V
Low Supply Current: 57µA
Operating Temperature Range: –40°C to 125°C
AEC-Q100 Qualified for Automotive Applications

The LTC6115 is a versatile combination of a high voltage, high side current sense amplifier and a voltage sense amplifier. Design flexibility is provided by the excellent device characteristics: ±500µV maximum offset voltage for current sense and maximum ±0.15% voltage sense total gain error.

The current sensing part of the LTC6115 monitors current by sensing the voltage across an external sense resistor. The sensed voltage is converted to an output current which can then be translated to a voltage by an external resistor, R_OUT. Due to its fast response, it is a perfect choice for load current warning and shut-off protection control.

The LTC6115 also includes an internal 1MΩ resistor divider and a precision voltage amplifier for accurate voltage monitoring. The resistor attenuation of 40 enables sensing of up to 100V on the V_IN pin, making it suitable for precision high voltage monitoring in telecommunications, industrial and automotive applications. The full-scale output voltage can be configured by external gain resistors to maximize use of the amplifier’s rail-to-rail output. The LTC6115 is available in a 12-lead MSOP package.

Applications

Current Shunt Measurement
Battery Monitoring
Power Management
Automotive Sensing and Control
Industrial Monitoring

Part Models: 6
1ku List Price: Starting From $1.90

Documentation

Data Sheet 1

LTC6115: High Voltage High Side Current and Voltage Sense Data Sheet (Rev.B) 10/30/2018

User Guide 1

DC2839A Demo Manual 04/11/2019

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
LTC6115HMS#PBF	12-Lead MSOP	Material Declaration Reliablity Data Package Resources	Ultra Librarian SamacSys
LTC6115HMS#TRPBF	12-Lead MSOP	Material Declaration Reliablity Data Package Resources	Ultra Librarian SamacSys
LTC6115HMS#WPBF	12-Lead MSOP	Material Declaration Reliablity Data Package Resources	Ultra Librarian SamacSys
LTC6115HMS#WTRPBF	12-Lead MSOP	Material Declaration Reliablity Data Package Resources	Ultra Librarian SamacSys
LTC6115IMS#PBF	12-Lead MSOP	Material Declaration Reliablity Data Package Resources	Ultra Librarian SamacSys
LTC6115IMS#TRPBF	12-Lead MSOP	Material Declaration Reliablity Data Package Resources	Ultra Librarian SamacSys

Part Models	Product Lifecycle	PCN

Jun 5, 2024 - 24_0003 Epoxy Change from Henkel 8290 to 8290A for MSOP Package (2)
		PCN24_0003_Form Material_Report Qualification Results Summary Delta Qualification Matrix
LTC6115HMS#PBF	PRODUCTION
LTC6115HMS#TRPBF	PRODUCTION
LTC6115IMS#PBF	PRODUCTION
LTC6115IMS#TRPBF	PRODUCTION
Feb 4, 2020 - 20_0129 Laser Mark Conversion for 12-Lead MSOP Packages Assembled in ADPG and UTAC
		PCN20_0129_Form Material_Report
LTC6115HMS#PBF	PRODUCTION
LTC6115HMS#TRPBF	PRODUCTION
LTC6115HMS#WPBF	PRODUCTION
LTC6115HMS#WTRPBF	PRODUCTION
LTC6115IMS#PBF	PRODUCTION
LTC6115IMS#TRPBF	PRODUCTION
Oct 11, 2022 - 22_0244 Epoxy Change from Henkel 8290 to 8290A for MSOP Package
		PCN22_0244_Form Material_Report Qualification Results Summary Delta Qualification Matrix
LTC6115HMS#WPBF	PRODUCTION
LTC6115HMS#WTRPBF	PRODUCTION
Apr 18, 2022 - 22_0050 UTAC Thai Limited (UTL) as Alternate Assembly Site for MSOP Packages / Devices
		PCN22_0050_Form Material_Report Qualification Results Summary Delta Qualification Matrix
LTC6115HMS#WPBF	PRODUCTION
LTC6115HMS#WTRPBF	PRODUCTION

This is the most up-to-date revision of the Data Sheet.

Software Resources

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Tools & Simulations

LTspice 2

Models for the following parts are available in LTspice:

LTC6115

Linduino 1

LTC6115 Linduino Files

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.

Linduino is Analog Devices’ Arduino compatible system for developing and distributing firmware libraries and example code for our integrated circuits. Each Linduino-supported product includes an example main program, defined in the LTSketchbook/Part Number folder and driver code, defined in the LTSketchbook/libraries folder.

Linduino code repository on GitHub and instructions on how to use the code.

Purchase Linduino

Evaluation Kits

LTC6115 High Voltage High Side Current and Voltage Sense

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Product Details

Demonstration circuit 2839A is a high voltage, high side current sense circuit featuring the LTC6115. This circuit measures inputs up to 100V and 2A. The board can be connected to Linduino^® as a shield and has an accompanying Linduino sketch. The gain of the current sense channel may be set with jumpers to 5V/A (100V/V) or 2.5V/A (50V/V), and the gain of the voltage sense channel may be selected with jumpers for unity gain or 2V/V.

The DC2839A includes a 4-terminal 50mΩ sense resistor with a footprint for larger, higher-power rated parts. A 1:1000 resistor divider can be selected with jumpers to provide simulated mV-scale input difference voltages if high currents are not available.

The voltage sense and current sense can be configured to measure the same input or separate inputs.

An external 5V to 100V power source is needed for input and current sense supply. The voltage sense supply can be either an external 2.7V to 5.5V power source or drawn from a Linduino (DC2026C) board when DC2839A is used as a Linduino shield. An optional electronic load capable of sinking up to 2A at 100V can also be used as input to the current sense. Turrets are provided for input and out-put, along with Linduino shield connectors to Linduino’s onboard ADC inputs.

Resources

DC2839A Design Files
4/11/2019

DC2839A Schematic
4/11/2019

DC2839A Demo Manual
4/11/2019

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