What is a current sense circuit?
A current sensor circuit is a circuit that can measure the current flowing through it. Current sensor circuits are used extensively in systems such as battery management systems in order to detect the current to monitor for overcurrent, a short circuit, and the state of charge of the battery system.
What is the purpose of a current sense amplifier?
A current sense amplifier is a special purpose integrated circuit differential amplifier that is designed to sense the voltage developed across a current shunt and output a voltage proportional to the measured current.
What is gain of current sense amplifier?
Gain: Current sense amplifiers come with various gain options that have robust performance over temperature and process variations by integrating a precisely matched resistive gain network. The gain options for fixed gain amplifiers vary from 0.125 V/V to 1000 V/V with gain errors as low as 0.01%.
What is a shunt amplifier?
Current sense amplifiers (also called current shunt amplifiers) are special-purpose amplifiers that output a voltage proportional to the current flowing in a power rail.
How does a current sensor circuit work?
AC current changes potential, which causes the magnetic field to continually collapse and expand. In an AC current sensor, wire is wrapped around a core. The magnetic field produced by the current flowing through your conductor induces a proportional current or voltage in the wire that is within the current sensor.
What is a current-sense resistor?
A current sensing resistor is designed for low resistance so as to minimize power consumption. As a result, the calibrated resistance senses the current flowing through it in the form of a voltage drop which is detected and monitored by the control circuitry.
What is sense amplifier in SRAM?
Sense Amplifier. The sense amplifier is in charge of detecting what value is stored in an SRAM cell during a read cycle and displaying that value at the output. Since only one row of data is accessed during each read cycle, each column of cells within the SRAM array requires only one sense amplifier [3].
What is sense amplifier in DRAM?
A sense amplifier is part of the read circuitry that is used when data is read from the memory; its role is to sense the low power signals from a bitline that represents a data bit (1 or 0) stored in a memory cell, and amplify the small voltage swing to recognizable logic levels so the data can be interpreted properly …
What is a current sense amplifier?
In electronics, current sense amplifiers are special-purpose amplifiers that output a voltage proportional to the current flowing in a power rail. They are often referred to as current shunt amplifiers because they use a shunt resistor in the power rail that provides a slight voltage drop when the current flows through the resistor.
What is the current sense amplifier training series?
The series is comprised of short training videos that cover the basics of current sense amplifiers, tips for applications, debugging, key specs and more! Browse current and power measurement use cases.
What is a bidirectional current sense amplifier?
Current sense amplifiers can measure the current flowing in a single direction or it can measure current flow in both directions through the sense resistor. In such a case, if the amplifier is capable to detect current flow in both directions, it is called bidirectional current sense amplifiers.
What is the VCC of a current sense amplifier?
But, current sense amplifiers are designed in a way that despite the low-voltage power rail (such as Vcc = 3.3 V and V = 0V), the amplifier can withstand a much higher pin voltage than the supplied Vcc. The amplifiers use an excellent power path protocol for its operation.