1. Skip to navigation
  2. Skip to content
  3. Skip to sidebar

Solutions Search - High Side Current Sense

LT6018 Low Noise Precision Current Monitor

Jun 14th 2017
The LT®6018 is a 33V precision operational amplifier with excellent noise performance. With 0.1Hz to 10Hz noise of only 30nVP-P, the LT6018 is an outstanding choice for applications where 1/f noise impacts system performance. The LT6018 has excellent DC performance with a maximum offset voltage of 50μV and a maximum offset ...

Circuit LTspice 

 

LT1997-3 - Single Supply Current Sense

Jun 14th 2017
Sense resistors R1 converts a current into a voltage. This voltage is buffered (gain of 1) from the input to the output in this amplifier. V1 tests the circuit for response to common mode variation. A simulation will show that the output voltage variation due to the common mode voltage V1 is very small.     The ...

Circuit LTspice 

 

LTC6102 Simple 500V Current Monitor

Aug 4th 2014
The LTC®6102/LTC6102HV are versatile, high voltage, highside current sense amplifiers. Their high supply voltage rating allows their use in many high side applications, while the low drift and offset ensure accuracy across a wide range of operating conditions. The LTC6102-1 is a version of the LTC6102 that includes a low ...

Circuit LTspice 

 

LT6100 0A to 33A High Side Current Monitor with 12kHz Frequency Rolloff

Aug 4th 2014
The LT6100 sense inputs have a voltage range that extends from 4.1V to 48V, and can withstand a differential voltage of the full supply. This makes it possible to monitor the voltage across a MOSFET switch or a fuse. The part can also withstand a reverse battery condition on the inputs. ...

Circuit LTspice 

 

LT6016: Precision High Voltage High Side Load Current Monitor

Nov 5th 2012
The LT6016/LT6017 are dual and quad rail-to-rail input operational amplifiers with input offset voltage trimmed to less than 50μV. These amplifiers operate on single and split supplies with a total voltage of 3V to 50V and draw only 315μA per amplifier. The Over-The-Top input stage of the LT6016/LT6017 is designed to provide ...

Circuit LTspice 

 

LT6016 Wide Input Range Current Sense Amp Goes Hi-Z When VSUPPLY Removed

Nov 5th 2012
The LT®6015/LT6016/LT6017 are single/dual/quad rail-torail input operational amplifiers with input offset voltage trimmed to less than 50μV. These amplifiers operate on single and split supplies with a total voltage of 3V to 50V and draw only 315μA per amplifier. They are reverse battery protected, drawing very little ...

Circuit 

 

LTC2991 Octal I2C Voltage, Current & Temperature Monitor - Video Product Brief

Chris Gobok - Product Marketing Engineer Sep 13th 2011
The LTC®2991 is used to monitor system temperatures, voltages and currents. Through the I2C serial interface, the eight monitors can individually measure supply voltages and can be paired for differential measurements of current sense resistors or temperature sensing transistors. Additional measurements include internal temperature ...

Video 

 

Overcurrent Battery Fault Protection

Sep 7th 2011
The LT6108 is a complete high side current sense device that incorporates a precision current sense amplifier, an integrated voltage reference and a comparator. Two versions of the LT6108 are available. The LT6108-1 has a latching comparator and the LT6108-2 has a non-latching comparator. In addition, the current sense amplifier ...

Circuit 

 

Circuit Fault Protection with Very Fast Latching Load Disconnect

Sep 7th 2011
The LT6108 is a complete high side current sense device that incorporates a precision current sense amplifier, an integrated voltage reference and a comparator. Two versions of the LT6108 are available. The LT6108-1 has a latching comparator and the LT6108-2 has a non-latching comparator. In addition, the current sense amplifier ...

Circuit 

 

LT6108 Simplified DC Motor Torque Control

Sep 7th 2011
The LT6108 is a complete high side current sense device that incorporates a precision current sense amplifier, an integrated voltage reference and a comparator. Two versions of the LT6108 are available. The LT6108-1 has a latching comparator and the LT6108-2 has a non-latching comparator. In addition, the current sense amplifier ...

Circuit 

 

Circuit Fault Protection with Latching Load Disconnect and Early Warning Indication

Jun 28th 2011
The LT6109 is a complete high side current sense device that incorporates a precision current sense amplifier, an integrated voltage reference and two comparators. Two versions of the LT6109 are available. The LT6109-1 has the comparators connected in opposing polarity and the LT6109-2 has the comparators connected in the same ...

Circuit 

 

Overcurrent and Undervoltage Battery Fault Protection

Jun 28th 2011
The LT6109 is a complete high side current sense device that incorporates a precision current sense amplifier, an integrated voltage reference and two comparators. Two versions of the LT6109 are available. The LT6109-1 has the comparators connected in opposing polarity and the LT6109-2 has the comparators connected in the same ...

Circuit 

 

Simple Ways To Measure Current - LTC6101, LTC6102, LTC6103, LTC6104

Jon Munson - Applications Engineer Mar 15th 2009
Measuring current is one of the basic requirements in many electronic systems; whether for precise control or simple protection of circuit elements. A family of new devices from Linear Technology has been produced to greatly simplify the measurement of DC or AC current. Using only external resistors, each small device can be ...

Video 

 

Isolated Current and Voltage Monitor

Jan 25th 2008
The LTC4151-1/LTC4151-2 split the SDA line into SDAI (input) and SDAO (LTC4151-1 inverted output) or SDAO (LTC4151-2 output) for convenience of opto-coupling with a host controller that sits at a different ground level.When using opto-isolators with the LTC4151-1, connect the SDAI to the output of the incoming opto-coupler and ...

Circuit 

 

High Side Power Sensing with Onboard ADC and I2C

Jan 25th 2008
The LTC4151 is a high side power monitor that operates over a wide voltage range of 7V to 80V. In default operation mode, the onboard 12-bit ADC continuously measures high side current, input voltage and an external voltage. Data is reported through the I2C interface when polled by a host. ...

Circuit 

 

Solenoid is Pulled High to 24V, Freewheels Low to a Schottky Below Ground

Sep 7th 2007
The large input common mode range of the LT6105 makes it suitable for monitoring currents in quarter, half and full bridge inductive load driving applications.This circuit shows an example of a quarter bridge. The MOSFET pulls down on the bottom of the solenoid to increase solenoid current. It lets go to decrease current, and ...

Circuit 

 

The LT6105 Can Monitor the Current of Either Positive or Negative Supplies, Without a Schematic Change.

Sep 7th 2007
Positive or negative current flow is measured by just swapping inputs, -IN connected to most negative side of sense resistor. +IN is connected to most positive side of sense resistor. ...

Circuit 

 

LT6105 Current Sense Amplifier Monitors Both +15V and -15V Supplies

Greg Zimmer - Senior Product Marketing Engineer Sep 7th 2007
The input common mode range of the LT6105 also makes it suitable for monitoring either positive or negative supplies. The circuit below shows one LT6105 applied as a simple positive supply monitor, and another LT6105 as a simple negative supply monitor. Note that the schematics are practically identical and both have outputs ...

Circuit LTspice 

 

Wire Loss Compensation Using a Current Referenced LDO

Jul 20th 2007
This circuit shows a cable drop compensation circuit using a current referenced regulator, the LT3080. A precision 10μA set current, ISET, is sourced through two series connected resistors to program the output voltage for the remote load. To compensate for the load connecting cable drop requires sourcing an additional current ...

Circuit LTspice 

 

Bidirectional Current Sense Circuit with Separate Charge/Discharge Output

Jun 15th 2007
The LTC6102/LTC6102HV monitor current via the voltage across an external sense resistor (shunt resistor). Internal circuitry converts input voltage to output current, allowing a small sense signal on a large common mode voltage to be translated to a ground-referred signal. Low DC offset allows the use of very low shunt resistor ...

Circuit 

 

Ultraprecise Current Sensing with LTC6102

Jun 15th 2007
Very low input offset allows using low value resistors while maintaining high measurement resolution. Using low value also reduces power losses and temperature rise. ...

Circuit 

 

High Voltage/Current and Temperature Monitoring

Jun 15th 2007
The LTC2990 is used to monitor system temperatures, voltages and currents. Through the I2C serial interface, the device can be configured to measure many combinations of internal temperature, remote temperature, remote voltage, remote current and internal VCC. The internal 10ppm/°C reference minimizes the number of supporting ...

Circuit 

 

2.7V to 5.5V Precision High Side Current Sense

Aug 16th 2005
This high side current sense amplifier works down to 2.7V. Even with such a low supply voltage, accuracy of the voltage sensed across resistor Rs is preserved due to the very low voltage offset error of the LTC6078 amplifier (7uV typical). ...

Circuit 

 

High Side Current Sense and Fuse Monitor

May 6th 2005
The LT6100 can be used as a combination current sensor and fuse monitor. This part includes on-chip output buffering and was designed to operate with the low supply voltage (≥2.7V), typical of vehicle data acquisition systems, while the sense inputs monitor signals at the higher battery bus potential. The LT6100 inputs are ...

Circuit 

 

Simple 500V High Side Current Monitor

Mar 17th 2005
Adding two external Mosfets to hold off the voltage al-lows the LTC6101 to connect to very high potentials and monitor the current flow. The output current from the LTC6101, which is proportional to the sensed input volt-age, flows through M1 to create a ground referenced output voltage. ...

Circuit 

 

48V Supply Current Monitor with Isolated Output and 105V Survivability

Mar 17th 2005
The HV version of the LTC6101 can operate with a total supply voltage of 105V. Current flow in high supply voltage rails can be monitored directly or in an isolated fashion as shown in this circuit. The gain of the circuit and the level of output current from the LTC6101 depends on the particular opto-isolator used. ...

Circuit 

 

16-Bit Resolution Unidirectional Current Sense into LTC2433 ADC

Jun 18th 2003
The LTC2433-1 can accurately digitize signal with source impedances up to 5kΩ. This LTC6101 current sense circuit uses a 4.99kΩ output resistance to meet this requirement, thus no additional buffering is necessary. ...

Circuit 

 

2.7V to 5.5V Ultra High Precision Current Sense

Jan 6th 2003
This is a low-voltage, ultra-high-precision monitor featuring a Zero-Drift Instrumentation Amplifier (IA) that provides Rail-to-Rail inputs and outputs. Voltage gain is set by the feedback resistors. Accuracy of this circuit is set by the quality of resistors selected by the user, small-signal range is limited by VOL in single-supply ...

Circuit 

 

Micropower Integrating Current Sense

Jan 31st 2001
This circuit takes advantage of the microampere supply current and Rail-to-Rail input of the LT1494. Supply current is only 3uA during integration and 5uA at the end of integration. ...

Circuit 

 

Self-Powered High Side Current Sense

Jan 31st 2001
This circuit takes advantage of the microampere supply current and Rail-to-Rail input of the LT1494. The circuit is simple because the supply draw is essentially equal to the load current developed through RA. This supply current is simply passed through RB to form an output voltage that is appropriately amplified. ...

Circuit 

 

Bidirectional Battery-Current Monitor

Aug 26th 1999
This circuit provides the capability of monitoring current in either direction through the sense resistor. To allow negative outputs to represent charging current, VEE is connected to a small negative supply. In single-supply operation (VEE at ground), the output range may be offset upwards by applying a positive reference level ...

Circuit 

 

Low Power, Bidirectional 60V Precision Hi Side Current Sense

Aug 26th 1999
Using a very precise zero-drift amplifier as a pre-amp allows for the use of a very small sense resistor in a high voltage supply line. A floating power supply regulates the voltage across the pre-amplifier on any voltage rail up to the 60V limit of the LT1787HV circuit. Overall gain of this circuit is 1000. A 1mA change in ...

Circuit 

 

Split or Single Supply Operation, Bidirectional Output into A/D

Aug 8th 1998
In this circuit, split supply operation is used on both the LT1787 and LT1404 to provide a symmetric bidirectional measurement. In the single-supply case, where the LT1787 pin 6 is driven by VREF, the bidirectional measurement range is slightly asymmetric due to VREF being somewhat greater than mid-span of the ADC input range. ...

Circuit 

 

Positive Supply Rail Current Sense With Over-the-Top Op Amp

Oct 6th 1994
This is a configuration similar to an LT6100 implemented with generic components. A Rail-to-Rail or Over-the-Top input op amp type is required (for the first section). The first section is a variation on the classic high-side where the P-MOSFET provides an accurate output current into R2 (compared to a BJT). The second section ...

Circuit