Abstract: The present invention provides an inductor device with a first input/output terminal and a second input/output terminal. The inductor device comprises a first coil and a second coil. The first coil has a first inner coil and a first outer coil surrounding the first inner coil. The first inner coil has a first connect portion connecting to the first input/output terminal and a second connect portion. The first outer coil has a third connect portion and a fourth connect portion connecting to the second input/output terminal. The second coil located has a second inner coil and a second outer coil surrounding the second inner coil. The second inner coil has a fifth connect portion and a sixth connect portion connecting to the second connect portion. The second outer coil has a seventh connect portion connecting to the fifth connect portion and a eighth connect portion connecting to the third connect portion.

Abstract: The present invention provides a delta-sigma-modulator for converting an external analog signal to a digital out-put signal. The delta-sigma modulator comprises a first filter circuit, a second filter circuit, a one-bit quantization, a multi-bit quantization, a digital-to-analog converter, and a digital filter. The first filter circuit outputs a first analog signal according to the external analog signal and an one-bit output signal. The second filter circuit outputs a third analog signal according to the first analog signal and a second analog signal. The one-bit quantization converts the third analog signal into the one-bit output signal. The multi-bit quantization converts the third analog signal into a multi-bit output signal. The digital-to-analog converter comprises a plurality of capacitors, and determines the number of capacitors to be charged according to the multi-bit output signal, then selects the capacitors to be charged in a predetermined turn and charges the capacitors.

Abstract: The present invention provides a delta-sigma modulator for converting an external analog signal to a digital output signal. The delta-sigma modulator comprises a first filter circuit, a second filter circuit, a one-bit quantization, a multi-bit quantization, a digital-to-analog converter, and a digital filter. The first filter circuit outputs a first analog signal according to the external analog signal and an one-bit output signal. The second filter circuit outputs a third analog signal according to the first analog signal and a second analog signal. The one-bit quantization converts the third analog signal into the one-bit output signal. The multi-bit quantization converts the third analog signal into a multi-bit output signal. The digital-to-analog converter comprises a plurality of capacitors, and determines the number of capacitors to be charged according to the multi-bit output signal, then selects the capacitors to be charged in a predetermined turn and charges the capacitors.

Abstract: The present invention provides an inductor device with a first input/output terminal and a second input/output terminal. The inductor device comprises a first coil and a second coil. The first coil has a first inner coil and a first outer coil surrounding the first inner coil. The first inner coil has a first connect portion connecting to the first input/output terminal and a second connect portion. The first outer coil has a third connect portion and a fourth connect portion connecting to the second input/output terminal. The second coil located has a second inner coil and a second outer coil surrounding the second inner coil. The second inner coil has a fifth connect portion and a sixth connect portion connecting to the second connect portion. The second outer coil has a seventh connect portion connecting to the fifth connect portion and a eighth connect portion connecting to the third connect portion.