Apparatus and methods remove a voltage offset from an electrical signal, specifically a biomedical signal. A signal is received at a first operational amplifier and is amplified by a gain. An amplitude of the signal is monitored, by a first pair of diode stages coupled to an output of the first operational amplifier, for the voltage offset. The amplitude of the signal is then attenuated by the first pair of diode stages and a plurality of timing banks. The attenuating includes limiting charging, by the first pair of diode stages, of the plurality of timing banks and setting a time constant based on the charging. The attenuating removes the voltage offset persisting at a threshold for a duration of at least the time constant. Saturation of the signal is limited to a saturation recovery time while the saturated signal is gradually pulled into monitoring range over the saturation recovery time.

A system for diagnosing a squib loop in a restraint control module. The system may include a first amplifier, a capacitor, a second amplifier. The first amplifier may have a first input connected to a first side of the squib and a second input connected to a second side of the squib. The output of the first amplifier may generate an output voltage corresponding to the voltage drop across the squib. The capacitor may be connected in series with the output of the first amplifier and the output of the first amplifier may be connected to a first side of the capacitor. The second amplifier having a first input connected to a second side of the capacitor. A second input of the second amplifier may be connected to a reference voltage. The second amplifier may be configured with a feedback loop to generate a gain output.

The present invention discloses a CO alarm for a battery type generator, comprising a MCU control unit U2, configured to analyze and process signals, which is in a deep sleep state when the generator is not running, and enters a sleep plus timing wake-up working state after the engine is running; a CO sensor detection unit U3 connected to the MCU control unit, configured to convert the CO concentration in the environment into a corresponding electrical signal and output to the MCU control unit U2 for processing; an alarm indication unit U4 connected to the MCU control unit, configured to give an alarm prompt for the CO concentration and an alarm failure prompt.

An electronic circuit comprises an error amplifier and an overshoot and undershoot detection circuit. The error amplifier has an output stage including a differential input to single ended output amplifier that includes a frequency compensation resistor. A switch circuit is connected across the frequency compensation resistor that shunts the frequency compensation resistor when activated. The overshoot and undershoot detection circuit compares differential input nodes of the output amplifier to a baseline voltage signal and activates the switch circuit when detecting an overshoot condition or an undershoot condition using the baseline voltage signal.

An image sensor may include an array of image sensor pixels. The array of image sensor pixels may be controlled by row driver circuitry. The row driver circuitry may include row drivers that receive power supply signals from transconductance amplifier circuitry. The transconductance amplifier circuitry may include multiple amplifiers with output ports shorted to one another. Each amplifier may include input transistors, cross-coupled transistors with a low threshold voltage, and additional transistors coupled in series with the cross-coupled transistors and having a moderate or high threshold voltage.

In one embodiment, an apparatus comprising a first resistor, the first resistor comprising a first type of resistor having a plurality of metal wires in respective layers, the plurality of metal wires arranged in series via a plurality of vias.

Provided are a detection circuit of a bridge sensor, a chip and a detection system. The detection circuit includes: an alternating current excitation module, and further includes a signal conditioning module, an analog-to-digital conversion module and a processing module connected in sequence. The alternating current excitation module is configured to apply an alternating current excitation signal to the bridge sensor. The signal conditioning module and the analog-to-digital conversion module are configured to sequentially process an output signal of the bridge sensor. The processing module is configured to demodulate the processed output signal and obtain detection information of the bridge sensor according to the demodulated output signal. In embodiments of the present disclosure, a white noise of the system can be greatly suppressed, and a signal-to-noise ratio of the system is improved, thereby improving detection performance of the bridge sensor.

A balanced differential transimpedance amplifier with a single-ended input operational over a wide variation in the dynamic range of input signals. A threshold circuit is employed to either or a combination of (1) generate a varying decision threshold to ensure a proper slicing over a wide range of input current signal levels; and (2) generate a bias current and voltage applied to an input of a transimpedance stage to cancel out a dependence of the transimpedance stage voltage input on input current signal levels.

In one implementation, a circuit can include a reference pin and an operational amplifier that can include an output pin, an inverting input pin and a non-inverting input pin. The inverting input pin can be electrically coupled to the output pin via a first impedance and to the reference pin via a second impedance. The non-inverting input pin can be electrically coupled to the reference pin via a third impedance and can be configured to receive a detection signal. The reference pin can be configured to receive a detection reference signal associated with the detection signal.

An apparatus for performing multi-loop power control in an electronic device is provided, where the apparatus may include at least one portion (e.g. a portion or all) of the electronic device. More particularly, the apparatus may include a first amplifier that is positioned in a first feedback loop of the electronic device and coupled to a power control terminal of the electronic device, and a second amplifier that is positioned in a second feedback loop of the electronic device and coupled to the power control terminal. For example, the apparatus may further include a compensation circuit that is coupled to the first amplifier and the second amplifier. In another example, the apparatus may further include a selection control circuit that is coupled to the first amplifier and the second amplifier. An associated method such as an operational method of the above apparatus is also provided.