Abstract: A current sense amplifier includes a first amplifier stage, a second amplifier stage, a switch, and a common-mode transient detector. The first amplifier stage has a first amplifier output, a second amplifier output, a first amplifier input, and a second amplifier input. The second amplifier stage has a third amplifier input coupled to the first amplifier output, and a fourth amplifier input coupled to the second amplifier output. The switch has a switch control input, a first switch terminal coupled to the third amplifier input, and a second switch terminal coupled to the fourth amplifier input. The common-mode transient detector circuit has a detector output, a first detector input and a second detector input. The detector output is coupled to the switch control input. The first detector input is coupled to the first amplifier input. The second detector input is coupled to the second amplifier input.

Abstract: An example apparatus includes: a differential amplifier including: an inverting input coupled to a first input via a first resistor; a non-inverting input coupled to a second input via a second resistor; a first supply input coupled to the first input via a third resistor, and the first supply input coupled to the second input via a fourth resistor; a second supply input coupled to a current source; a non-inverting output; and an inverting output; a first transistor including a first control terminal and a first current terminal, the first control terminal coupled to the non-inverting output and the first current terminal coupled to the inverting input; and a second transistor including a second control terminal and a second current terminal, the second control terminal coupled to the inverting output and the second current terminal coupled to the non-inverting input.

Abstract: Devices, systems and methods are disclosed for assigning unique addresses to slave devices in a system comprising a host controller and multiple slave devices connected in a daisy chain configuration. The host controller initiates the address programming protocol, resulting in address assignment commands propagating along the daisy chain to each of the slave devices. Upon receiving an address assignment, each slave device issues an updated address assignment for the neighboring downstream slave device in the daisy chain. In this manner, slave devices are uniquely addressed using a single command, such that slave devices do not require factory-programmed device addresses. Also disclosed are communication protocols that allow the host controller to communicate with each of the daisy-chained slave devices or with certain subsets of the slave devices.

Abstract: A system including an integrated circuit chip also includes a microcontroller in the chip and an algorithm for execution by the microcontroller. The algorithm includes addition, subtraction, and multiplication operators (e.g. 25,15,20) and shift-left and shift-right operators (e.g., 48,21) configured for solving particular equations (Eqns. 1-4). Input numbers are within particular ranges to allow the shift operators to shift binary bits so each number so it fits within a register of a particular width. An IR sensor (4) may convert IR radiation (3) to produce a voltage (Vobj) representing the temperature (Tobj) of an IR emitting object (2). The algorithm (100) operates in conjunction with the microcontroller (7) to convert the voltage (Vobj) into a value representing the temperature (Tobj) of the remote object (2) without keeping track of decimal points and resolution of the numbers.

Abstract: A system including an integrated circuit chip also includes a microcontroller in the chip and an algorithm for execution by the microcontroller. The algorithm includes addition, subtraction, and multiplication operators (e.g. 25,15,20) and shift-left and shift-right operators (e.g., 48,21) configured for solving particular equations (Eqns. 1-4). Input numbers are within particular ranges to allow the shift operators to shift binary bits so each number so it fits within a register of a particular width. An IR sensor (4) may convert IR radiation (3) to produce a voltage (Vobj) representing the temperature (Tobj) of an IR emitting object (2). The algorithm (100) operates in conjunction with the microcontroller (7) to convert the voltage (Vobj) into a value representing the temperature (Tobj) of the remote object (2) without keeping track of decimal points and resolution of the numbers.