Abstract: A circuit for biasing a transducer including a first plate and a second plate includes a front-end buffer and a charge pump. The front-end buffer generates an internal signal at an internal node in response to a voltage signal of the second plate. The transducer receives the incident sound wave at the first plate to generate the voltage signal at the second plate. The charge pump boosts the internal signal into a boost voltage at the first plate according to a first clock signal.

Abstract: A digital microphone is provided. The digital microphone includes an acoustic sensor, a bias generator, first and second attenuators, a buffer, an amplifier, an ADC, and a controller. The acoustic sensor transfers an acoustic signal to a voltage signal. The bias generator provides a bias voltage to the acoustic sensor. The first attenuator attenuates the voltage signal by a first attenuation value. The buffer buffers the voltage signal to generate a buffered voltage signal. The amplifier amplifies the buffered voltage signal to generate an amplified signal. The ADC converts the amplified signal to a data signal with a digital format. The second attenuator attenuates the data signal by a second attenuation value. The controller determines whether the amplified signal is larger than a reference value and adjusts the bias voltage and the first and second attenuation values of the first and second attenuators according to the result determined by the controller.

Abstract: A circuit for biasing a transducer including a first plate and a second plate includes a front-end buffer and a charge pump. The front-end buffer generates an internal signal at an internal node in response to a voltage signal of the second plate. The transducer receives the incident sound wave at the first plate to generate the voltage signal at the second plate. The charge pump boosts the internal signal into a boost voltage at the first plate according to a first clock signal.

Abstract: A digital microphone is provided. The digital microphone includes an acoustic sensor, a bias generator, first and second attenuators, a buffer, an amplifier, an ADC, and a controller. The acoustic sensor transfers an acoustic signal to a voltage signal. The bias generator provides a bias voltage to the acoustic sensor. The first attenuator attenuates the voltage signal by a first attenuation value. The buffer buffers the voltage signal to generate a buffered voltage signal. The amplifier amplifies the buffered voltage signal to generate an amplified signal. The ADC converts the amplified signal to a data signal with a digital format. The second attenuator attenuates the data signal by a second attenuation value. The controller determines whether the amplified signal is larger than a reference value and adjusts the bias voltage and the first and second attenuation values of the first and second attenuators according to the result determined by the controller.

Abstract: An overvoltage protection circuit includes a shunt circuit adapted for connection to at least one circuit node to be protected from an overvoltage condition and a voltage generator coupled to the shunt circuit. The shunt circuit is selectively activated as a function of a control signal supplied to the shunt circuit. The voltage generator is operative to generate the control signal for activating the shunt circuit during the overvoltage condition. The control signal has a level which varies in a manner that at least partially changes offsets in activation threshold of the shunt circuit.

Abstract: An overvoltage protection circuit includes a shunt circuit adapted for connection to at least one circuit node to be protected from an overvoltage condition and a voltage generator coupled to the shunt circuit. The shunt circuit is selectively activated as a function of a control signal supplied to the shunt circuit. The voltage generator is operative to generate the control signal for activating the shunt circuit during the overvoltage condition. The control signal has a level which varies in a manner that at least partially changes offsets in activation threshold of the shunt circuit.

Abstract: Inhibitory oligonucleotides are disclosed which are targeted to three specific target regions and subsequences of the target regions found on nucleic acids encoding Bcl-2. These inhibitory oligonucleotides are generally of from about 8 to about 50 nucleotides in length. Specific preferred oligonucleotides are disclosed. The oligonucleotides of the invention may be incorporated into compositions such as pharmaceutical compositions, and may be used in methods for inhibiting the expression of Bcl-2 in a cell or tissue, methods for treating conditions susceptible to modulation of Bcl-2 expression in an organism, and methods for detecting nucleic acid encoding BCL-2.

Abstract: Inhibitory oligonucleotides are disclosed which are targeted to three specific target regions and subsequences of the target regions found on nucleic acids encoding Bcl-2. These inhibitory oligonucleotides are generally of from about 8 to about 50 nucleotides in length. Specific preferred oligonucleotides are disclosed. The oligonucleotides of the invention may be incorporated into compositions such as pharmaceutical compositions, and may be used in methods for inhibiting the expression of Bcl-2 in a cell or tissue, methods for treating conditions susceptible to modulation of Bcl-2 expression in an organism, and methods for detecting nucleic acid encoding BCL-2.

Abstract: Inhibitory oligonucleotides are disclosed which are targeted to three specific target regions and subsequences of the target regions found on nucleic acids encoding Bcl-2. These inhibitory oligonucleotides are generally of from about 8 to about 50 nucleotides in length. Specific preferred oligonucleotides are disclosed. The oligonucleotides of the invention may be incorporated into compositions such as pharmaceutical compositions, and may be used in methods for inhibiting the expression of Bcl-2 in a cell or tissue, methods for treating conditions susceptible to modulation of Bcl-2 expression in an organism, and methods for detecting nucleic acid encoding BCL-2.