Patent classifications
H03F2203/45101
Methods and Apparatus of Adaptive and Automatic Adjusting and Controlling for Optimized Electrometer Analog Signal Linearity, Sensitivity, and Range
A signal processing assembly for a detector includes a signal amplifier, a control unit, and an offset control module. The signal amplifier is configured to receive an input signal from the detector assembly and to provide an output signal. The control unit is configured to compare a first data point from the output signal with a signal range, and to generate an input bias control signal based upon the comparison. The offset control module is coupled with the control unit and configured to receive the input bias control signal. The offset control module includes a power supply operatively coupled with an input of the signal amplifier, and the offset control module is configured to generate and apply an adaptive input offset signal at the input of the signal amplifier based upon the input bias control signal.
Continuous time linear equalization circuit
A continuous time linear equalization (CTLE) circuit is disclosed. The CTLE circuit includes a passive CTLE circuit and an active CTLE circuit. The active CTLE circuit includes a differential transistor pair and the output of the passive CTLE is configured to drive gates or bases of the differential transistor pair.
HIGH BANDWIDTH CONTINUOUS TIME LINEAR EQUALIZATION CIRCUIT
A high bandwidth continuous time linear equalization (HBCTLE) circuit is disclosed. The HBCTLE circuit includes a continuous time linear equalization (CTLE) circuit and a gain circuit coupled with an output of the CTLE circuit. A feedback circuit is coupled between the output of the CTLE circuit and an output of the gain circuit.
CONTINUOUS TIME LINEAR EQUALIZATION CIRCUIT
A continuous time linear equalization (CTLE) circuit is disclosed. The CTLE circuit includes a passive CTLE circuit and an active CTLE circuit. The active CTLE circuit includes a differential transistor pair and the output of the passive CTLE is configured to drive gates or bases of the differential transistor pair.
Methods and apparatus of adaptive and automatic adjusting and controlling for optimized electrometer analog signal linearity, sensitivity, and range
A signal processing assembly for a detector includes a signal amplifier, a control unit, and an offset control module. The signal amplifier is configured to receive an input signal from the detector assembly and to provide an output signal. The control unit is configured to compare a first data point from the output signal with a signal range, and to generate an input bias control signal based upon the comparison. The offset control module is coupled with the control unit and configured to receive the input bias control signal. The offset control module includes a power supply operatively coupled with an input of the signal amplifier, and the offset control module is configured to generate and apply an adaptive input offset signal at the input of the signal amplifier based upon the input bias control signal.
DIFFERENTIAL CURRENT SOURCE
A current source circuit can include a first amplifier circuit and a second amplifier circuit. Each of the first and second amplifier circuits can be configured to generate respective amplifier output voltages based on a corresponding input voltage and respective feedback voltage. The current source circuit can further include a cross-coupling circuit that can include a first set of resistors and a second set of resistors. The first set of resistors can be configured to establish a first cross-coupling voltage based on the first amplifier output voltage and the second set of resistors can be configured to establish a second cross-coupling voltage based on the second amplifier output voltage. The first and second amplifier circuits can be configured to maintain the first and second cross-coupling voltage at a given voltage amplitude to provide a constant current at an output node of the current source circuit.
Differential amplifier
There is provided a differential amplifier including: an inverting input terminal to which a first voltage is applied; a non-inverting input terminal to which a second voltage proportional to the first voltage is applied; and an offset part configured to generate a predetermined input offset voltage between the inverting input terminal and the non-inverting input terminal.
Dynamic common mode control
An apparatus such as an electronic circuit includes an input operable to receive an input signal; a dynamic common mode adjustor operable to: i) derive a differential signal from the received input signal, and ii) control an offset of the differential signal as a function of the received input signal to produce an offset differential signal; and an output operable to output the offset differential signal. In one arrangement, the offset differential signal outputted from the output includes a first signal and a second signal; a difference between the second signal and the first signal proportionally varies with respect to the received input signal.
Circuit arrangement for generating a supply voltage with controllable ground potential level
A circuit arrangement for generating a supply voltage with a controllable ground potential level includes a voltage source that provides the supply voltage ungrounded, a control unit that generates an adjustable control d.c. voltage to ground, and an operational amplifier that is connected via its voltage supply terminals to the supply voltage source, where the control d.c. voltage is applied to the inverting input of the operational amplifier, the non-inverting input of the operational amplifier is connected via a resistor network to the voltage source and to a ground terminal and the output of the operational amplifier is fed back to the inverting input via a capacitor.
Voltage regulator and power supply
A voltage regulator and a power supply are provided. The voltage regulator includes an operational amplifier and an offset voltage control module. The offset voltage control module includes one or more stages of regulation branches connected in parallel, and controls an offset voltage of the operational amplifier with the one or more stages of regulation branches to regulate the output voltage. The offset voltage control module also includes a bandgap reference generation circuit, configured to generate a reference voltage irrelevant to a temperature coefficient that is received by the operational amplifier from the input terminal, wherein the bandgap reference generation circuit comprises at least one of: a V.sub.GS-based bandgap reference generation circuit having a full CMOS reference offset structure, a PTAT unit-based and V.sub.GS-based bandgap reference generation circuit having a full CMOS reference offset structure, and a PTAT unit-based and BJT-based bandgap reference generation circuit having a complementary structure.