7 results about "Track and hold" patented technology

The utility model discloses a CAN (Controller Area Network) bus data recording device circuit, which comprises a microprocessor circuit, a power supply circuit and a CAN bus circuit, and is characterized in that the microprocessor circuit is connected with the CAN bus circuit; the microprocessor circuit comprises a processor chip U1, a crystal oscillator Y1, a crystal oscillator Y2, a capacitor C10, a capacitor C11, a capacitor C9 and a capacitor C22. The two ends of the crystal oscillator Y1 are connected with the eighth pin and the ninth pin of the processor chip U1 respectively. The utility model belongs to the technical field of CAN bus data recording, and aims at solving the problems that in the prior art, the function of automatically recording communication data is not achieved, inconvenience is brought to analysis and searching of the communication data afterwards, and meanwhile the analysis and diagnosis capacity of remote CAN equipment is weakened. The technical effects are that communication data can be automatically captured and recorded after power-on, continuous tracking can be realized, time recording can be kept, and the analysis and diagnosis capability of remote CAN equipment is greatly improved.

A Track and Hold, T / H, circuit, arranged for tracking an input signal during a second phase and arranged for holding a sampled value of said input signal during a first phase, comprising an output switch arranged for providing said input signal to an output during said second phase, for providing an output signal at said output, a first bootstrapping circuit arranged for providing a first bootstrapped input signal, during said second phase, to a control terminal of said output switch, wherein said first bootstrapped input signal is a turn-on voltage for turning on said output switch bootstrapped with a measure for said input signal, a second bootstrapping circuit arranged for providing a second bootstrapped input signal, during said first phase, to said control terminal of said output switch, wherein said second bootstrapped input signal is a turn-off voltage for turning off said output switch bootstrapped with a measure for said input signal.

A track-and-hold circuit includes a charge pump circuit and a bootstrapped switch. The charge pump circuit pumps a supply voltage into a pumped voltage higher than the supply voltage, and includes at least one MOSFET capacitor switched based on a clock signal, and a pre-charging switch coupled between a pull-up source and a body of the MOSFET capacitor. The pre-charging switch includes a native NMOS transistor and is switched based on the clock signal to pre-charge the body of the MOSFET capacitor, thereby reducing a wake-up delay time of the pumped voltage. The bootstrapped switch tracks and holds an input signal based on a bootstrapped driving signal to generate a track-and-hold output signal. The bootstrapped driving signal is generated based on a track-and-hold control signal related to the clock signal, the input signal, and the pumped voltage.

A track and hold (TAH) system includes a complementary source follower circuit and a first TAH path. The complementary source follower circuit receives an input signal of the TAH system. The first TAH path includes a first TAH switch circuit, a first TAH output buffer circuit, and a first TAH clock-feedthrough cancellation circuit. The first TAH switch circuit is controlled by a first switch clock to sample a signal derived from an output signal of the complementary source follower circuit to obtain a first sampled signal. The first TAH output buffer circuit generates an output signal of the first TAH path according to the first sampled signal. The first TAH clock-feedthrough cancellation circuit applies clock-feedthrough cancellation to the first sampled signal according to the first switch clock.

A track-and-hold circuit includes a charge pump circuit and a bootstrapped switch. The charge pump circuit pumps a supply voltage into a pumped voltage higher than the supply voltage, including: a MOSFET capacitor, switched based on a clock signal; and a pre-charging circuit for pre-charging a body of the MOSFET capacitor based on a pre-charging signal synchronous with the clock signal, thereby reducing a wake-up delay time of the pumped voltage. The bootstrapped switch tracks and holds an input signal received from one end based on a bootstrapped driving signal, thereby generating a track-and-hold output signal on another end. The bootstrapped driving signal is generated based on a track-and-hold control signal related to the clock signal, the input signal and the pumped voltage provided by the charge pump circuit.

A Track and Hold, T / H, circuit (100), arranged for tracking an input signal (Vin) during a second phase and arranged for holding a sampled value of said input signal during a first phase, comprising an output switch (MNS) arranged for providing said input signal to an output during said second phase, for providing an output signal (Vout) at said output, a first bootstrapping circuit (MN1, MN2, MP1, MP2, Cb1) arranged for providing a first bootstrapped input signal, during said second phase, to a control terminal (Vg) of said output switch, wherein said first bootstrapped input signal is a turn-on voltage for turning on said output switch bootstrapped with a measure for said input signal, a second bootstrapping circuit (MN3, MN4, MN5, MP3, Cb2) arranged for providing a second bootstrapped input signal, during said first phase, to said control terminal of said output switch, wherein said second bootstrapped input signal is a turn-off voltage for turning off said output switch bootstrapped with a measure for said input signal.

A track-and-hold circuit includes a charge pump circuit and a bootstrapped switch. The charge pump circuit pumps a supply voltage into a pumped voltage higher than the supply voltage, including: a MOSFET capacitor, switched based on a clock signal; and a pre-charging circuit for pre-charging a body of the MOSFET capacitor based on a pre-charging signal synchronous with the clock signal, thereby reducing a wake-up delay time of the pumped voltage. The bootstrapped switch tracks and holds an input signal received from one end based on a bootstrapped driving signal, thereby generating a track-and-hold output signal on another end. The bootstrapped driving signal is generated based on a track-and-hold control signal related to the clock signal, the input signal and the pumped voltage provided by the charge pump circuit.