Solutions Search - Bidirectional Current Sense
LT6375 Bidirectional Full Range Current Monitor
Aug 31st 2015
The LT®6375 is a unity-gain difference amplifier which combines excellent DC precision, a very high input common mode range and a wide supply voltage range. It includes a precision op amp and a highly-matched thin film resistor network. It features excellent CMRR, extremely low gain error and extremely low gain drift. ...
LTC2991 Octal I2C Voltage, Current & Temperature Monitor - Video Product Brief
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 ...
Precision Current Monitoring for Electric Motors, Solenoids and Inductive Loads
Mar 21st 2011
Current information in electric motors and solenoids provides important insight into power output and system health. Electric motor and solenoid driving circuits and the devices themselves create a challenging environment for operation of current monitoring circuits, with large common mode voltage shifts, fast switching currents ...
Simple Ways To Measure Current - LTC6101, LTC6102, LTC6103, LTC6104
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 ...
LT6105 Current Sense Amplifier Monitors Both +15V and -15V Supplies
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 ...
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 ...
Bidirectional H-Bridge Monitoring with Single-Ended Output
Jan 17th 2007
The output structure of the LTC6104 provides a single bidirectional signal. The output connection can either source or sink current to a load resistance, depending on which input channel is sensing current fl ow. A negative-going output swing remains linear as long as Pin 4 (V–) is lower than the lowest expected output level ...
Bidirectional H-Bridge Monitoring with ADC-Friendly Differential Output
Jan 15th 2007
The dual outputs of the LTC6103 can be used individually to provide overload detection, and/or may be taken as a differential pair to provide a bidirectional signal to an analog-to-digital converter (ADC) for example. Figure 3 shows a typical circuit for a generic H-bridge application. The power devices may be complementary ...
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 ...
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 ...
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. ...
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