Abstract: An electrostatic discharge protection circuit may include discharge path circuitry to discharge charge on a supply line in response to detection of an ESD event. The charge on the supply line may be discharged through the discharge path circuitry from when a first timing window opens until a second timing window closes. The first timing window may also be used to detect ESD events. The two timing windows may allow an initial period of the ESD voltage on the supply line to be suppressed before the second timing window opens, and may further allow a remaining period of the ESD event following the initial period to be suppressed after the first timing window closes.

Abstract: An electrostatic discharge protection circuit may include discharge path circuitry to discharge charge on a supply line in response to detection of an ESD event. The charge on the supply line may be discharged through the discharge path circuitry from when a first timing window opens until a second timing window closes. The first timing window may also be used to detect ESD events. The two timing windows may allow an initial period of the ESD voltage on the supply line to be suppressed before the second timing window opens, and may further allow a remaining period of the ESD event following the initial period to be suppressed after the first timing window closes.

Abstract: A comparator system may include a comparator circuit and input circuitry coupled to a communication line. The circuitry may include resistors that are used to generate input voltages supplied to input terminals of the comparator. Resistor-dependent currents generated from a resistor-dependent current source may be supplied to the resistors of the input circuitry. The resistors of the input circuitry and resistors of the resistor-dependent current source may be of the same type and/or configured on the same chip to increase stability in the presence of various process-voltage-temperature (PVT) conditions. The comparator system may be implemented as a squelch detector or other signal detection system, such that an output generated by the comparator based on the input voltages may indicate presence or absence of a signal.

Abstract: A first charge module includes a first resistor and a first capacitor. A second charge module includes a second resistor and a second capacitor. A voltage comparison module includes a comparator connected to compare voltages present on the first and second capacitors. The comparator is connected to output a signal having a first state when the voltage on the first capacitor is less than the voltage on the second capacitor, and output a signal having a second state opposite of the first state when the voltage on the first capacitor is greater than the voltage on the second capacitor. A control module is configured to receive a PWM signal as an input signal and generate control signals based on the received PWM signal for controlling charging and discharging of the first and second capacitors. The output of the comparator is a decoded version of the PWM signal.

Abstract: A voltage regulator compensation circuit provides power to a dynamic load and includes a power transistor configured to drive the dynamic load, a reference determining transistor configured to establish a voltage reference proportional to a regulated output voltage of the power transistor, and a control circuit coupled to a gate input of both the power transistor and the reference determining transistor. Also included is a comparison engine configured to compare the regulated output voltage and the voltage reference, and a current consuming transistor operatively coupled to an output of the power transistor and configured to provide a varying secondary load. The comparison engine is configured to control the current consuming transistor to increase current draw or decrease current draw from the power transistor based on the difference between the regulated output voltage and the voltage reference.

Abstract: A voltage to frequency conversion system may be used in association with clock related applications such as a closed loop oscillator. The voltage to frequency conversion system includes independent current sources that are synchronously operated to generate substantially the same respective output currents under varying temperature and supply voltage conditions. One of the current sources is used to generate a reference voltage, and the other of the current sources is used to charge a capacitor in a predetermined ramp. The capacitor may be selectively charged and discharged based on a frequency of an input signal, and an average of the variable charge voltage of the capacitor may be compared to the reference voltage to generate an analog output signal indicative of frequency.

Abstract: A voltage to frequency conversion system may be used in association with clock related applications such as a closed loop oscillator. The voltage to frequency conversion system includes independent current sources that are synchronously operated to generate substantially the same respective output currents under varying temperature and supply voltage conditions. One of the current sources is used to generate a reference voltage, and the other of the current sources is used to charge a capacitor in a predetermined ramp. The capacitor may be selectively charged and discharged based on a frequency of an input signal, and an average of the variable charge voltage of the capacitor may be compared to the reference voltage to generate an analog output signal indicative of frequency.

Abstract: A voltage regulator compensation circuit provides power to a dynamic load and includes a power transistor configured to drive the dynamic load, a reference determining transistor configured to establish a voltage reference proportional to a regulated output voltage of the power transistor, and a control circuit coupled to a gate input of both the power transistor and the reference determining transistor. Also included is a comparison engine configured to compare the regulated output voltage and the voltage reference, and a current consuming transistor operatively coupled to an output of the power transistor and configured to provide a varying secondary load. The comparison engine is configured to control the current consuming transistor to increase current draw or decrease current draw from the power transistor based on the difference between the regulated output voltage and the voltage reference.