Abstract: Temperature accuracy is improved, conversion gain is increased without increasing current density and parasitic resistance errors and other problems with conventional bandgap reference temperature sensors are eliminated by generating a signal proportional to temperature from three samples, where the signal is defined as a difference between a first difference and a second difference, the first difference comprising a difference between a second sample and a first sample, the second difference comprising a difference between a third sample and the first sample, and where the signal is defined to cancel parasitic components in the first, second and third samples.

Abstract: Temperature accuracy is improved, conversion gain is increased without increasing current density and parasitic resistance errors and other problems with conventional bandgap reference temperature sensors are eliminated by generating a signal proportional to temperature from three samples, where the signal is defined as a difference between a first difference and a second difference, the first difference comprising a difference between a second sample and a first sample, the second difference comprising a difference between a third sample and the first sample, and where the signal is defined to cancel parasitic components in the first, second and third samples.

Abstract: A multi-band clock generator includes a phase-locked loop (PLL) integrated circuit responding to first and second clock signals, and includes a multi-band voltage controlled oscillator (VCO) responding to a multi-bit control word that sets a frequency characteristic curve of the VCO. The multi-band clock generator also includes an adaptive frequency calibration (AFC) circuit responding to the first and second clock signals, and the AFC circuit is configured to look-up a first multi-bit control word during an operation to lock an output clock signal generated by the VCO to a first frequency characteristic curve associated with the first multi-bit control word.

Abstract: A switch circuit is provided. The switch circuit may include a first transistor having a source terminal to accept an input signal, a drain terminal to provide an output signal, and a gate; a power supply providing a gate voltage. The switch circuit may also include a circuit to couple a switch signal to the gate, wherein the circuit turns the first transistor ‘off’ for all values of the input signal when the switch signal is ‘low.’ A programmable gain amplifier (PGA) is also provided. The PGA may include an input stage having an input node to couple an input signal, and an output node to provide a gate signal, at least a first gain stage including a resistor and a switch circuit as above. A differential gain amplifier may be included to provide an output signal from the gain signal.

Abstract: A switch circuit is provided. The switch circuit may include a first transistor having a source terminal to accept an input signal, a drain terminal to provide an output signal, and a gate; a power supply providing a gate voltage. The switch circuit may also include a circuit to couple a switch signal to the gate, wherein the circuit turns the first transistor ‘off’ for all values of the input signal when the switch signal is ‘low.’ A programmable gain amplifier (PGA) is also provided. The PGA may include an input stage having an input node to couple an input signal, and an output node to provide a gate signal, at least a first gain stage including a resistor and a switch circuit as above. A differential gain amplifier may be included to provide an output signal from the gain signal.