Abstract: Provided are an analog-to-digital (AD) converter, a sensor processing circuit, and a sensor system capable of improving responsiveness of feedback control. AD converter includes input part, AD conversion part, first output part, and second output part. The analog signal output from sensor is input to input part. AD conversion part digitally converts an analog signal to generate first digital data and second digital data. First output part outputs the first digital data to control circuit. Second output part outputs the second digital data to sensor before first output part outputs the first digital data.

Abstract: A signal processing device includes a detection circuit, a correction circuit, and a comparator circuit. The detection circuit generates a first detection signal, based on an output signal of a capacitive detection element that detects inertial force. The correction circuit corrects non-linearity of the first detection signal and outputs a second detection signal thus corrected. The comparator circuit compares the first detection signal and the second detection signal with each other and outputs a comparison signal representing a result of comparison.

Abstract: An A/D converter includes an A/D conversion unit and an output unit. The A/D conversion unit includes a second A/D converter (successive approximation register A/D converter) and generates first digital data having a first number of bits and second digital data having a second number of bits, where the second number of bits is smaller than the first number of bits. The output unit provides first output information that is the first digital data and also provides second output information based on the second digital data. The output unit provides the second output information before providing the first output information.

Abstract: A digital filter is used in an A/D converter and includes a first filter and second filter. The first filter outputs first digital data by performing filter processing on output of an A/D conversion unit included in the A/D converter. The second filter outputs second digital data by performing filter processing on the output of the A/D conversion unit. The second digital data has either a lower resolution or a smaller effective number of bits than the first digital data does. The second filter outputs the second digital data before the first filter outputs the first digital data.

Abstract: Provided are an analog-to-digital (AD) converter, a sensor system, and a test system capable of reducing the time for test processing. AD converter includes input part, AD conversion part, first output part, and second output part. The analog signal output from sensor is input to input part. AD conversion part digitally converts an analog signal to generate first digital data and second digital data. First output part outputs the first digital data to control circuit. Second output part outputs the second digital data to test controller before first output part outputs the first digital data. In the test mode, test controller determines whether or not sensor system including sensor is in an abnormal state on the basis of the second digital data.

Abstract: An A/D converter includes an A/D conversion unit and an output unit. The A/D conversion unit includes a second A/D converter (successive approximation register A/D converter) and generates first digital data having a first number of bits and second digital data having a second number of bits, where the second number of bits is smaller than the first number of bits. The output unit provides first output information that is the first digital data and also provides second output information based on the second digital data. The output unit provides the second output information before providing the first output information.

Abstract: A digital filter is used in an A/D converter and includes a first filter and second filter. The first filter outputs first digital data by performing filter processing on output of an A/D conversion unit included in the A/D converter. The second filter outputs second digital data by performing filter processing on the output of the A/D conversion unit. The second digital data has either a lower resolution or a smaller effective number of bits than the first digital data does. The second filter outputs the second digital data before the first filter outputs the first digital data.

Abstract: A signal processing device includes detection circuitry and correction circuitry. The detection circuitry includes a first detection unit and a second detection unit. The first detection unit generates at least one detection signal based on an associated one of output signals corresponding to each of at least two directions. The second detection unit has a broader detection range than the first detection unit and generates at least one correction signal based on the associated one of the output signals corresponding to each of the at least two directions. The correction circuitry corrects an associated one of the detection signals corresponding to each of the at least two directions with at least an associated one of the correction signals corresponding to at least one direction, other than one direction subjected to correction, out of the at least two directions.

Abstract: A signal processing device includes a detection circuit, a correction circuit, and a comparator circuit. The detection circuit generates a first detection signal, based on an output signal of a capacitive detection element that detects inertial force. The correction circuit corrects non-linearity of the first detection signal and outputs a second detection signal thus corrected. The comparator circuit compares the first detection signal and the second detection signal with each other and outputs a comparison signal representing a result of comparison.

Abstract: Provided are an analog-to-digital (AD) converter, a sensor system, and a test system capable of reducing the time for test processing. AD converter includes input part, AD conversion part, first output part, and second output part. The analog signal output from sensor is input to input part. AD conversion part digitally converts an analog signal to generate first digital data and second digital data. First output part outputs the first digital data to control circuit. Second output part outputs the second digital data to test controller before first output part outputs the first digital data. In the test mode, test controller determines whether or not sensor system including sensor is in an abnormal state on the basis of the second digital data.

Abstract: Provided are an analog-to-digital (AD) converter, a sensor processing circuit, and a sensor system capable of improving responsiveness of feedback control. AD converter includes input part, AD conversion part, first output part, and second output part. The analog signal output from sensor is input to input part. AD conversion part digitally converts an analog signal to generate first digital data and second digital data. First output part outputs the first digital data to control circuit. Second output part outputs the second digital data to sensor before first output part outputs the first digital data.

Abstract: A digital-to-analog converter includes: a first partial circuit with a first bank of resistors and a first group of switches; a second partial circuit; a first resistor; a third partial circuit with a third bank of resistors and a third group of switches; and a fourth partial circuit with a fourth bank of resistors and a fourth group of switches Supposing that the first resistor has a resistance value R, the fourth bank of resistors has a combined resistance value of 2(n-m)R, the first bank of resistors has a combined resistance value of (2m?1)R, the third bank of resistors has a combined resistance value of (2m?1)R, and the second partial circuit has a combined resistance value of R/(2(n-m)?1).

Abstract: A digital-to-analog converter includes: a first partial circuit with a first bank of resistors and a first group of switches; a second partial circuit; a first resistor; a third partial circuit with a third bank of resistors and a third group of switches; and a fourth partial circuit with a fourth bank of resistors and a fourth group of switches Supposing that the first resistor has a resistance value R, the fourth bank of resistors has a combined resistance value of 2(n?m)R, the first bank of resistors has a combined resistance value of (2m?1)R, the third bank of resistors has a combined resistance value of (2m?1)R, and the second partial circuit has a combined resistance value of R/(2(n?m)?1).

Abstract: A battery assembly controller controls terminal voltages of a plurality of series-connected secondary batteries to be equal. The controller includes a discharge circuit selectively reducing the terminal voltages of the secondary batteries; and a monitoring circuit directly connected to positive and negative electrodes of the secondary batteries to monitor the terminal voltages of the secondary batteries.

Abstract: A battery assembly controller controls terminal voltages of a plurality of series-connected secondary batteries to be equal. The controller includes a discharge circuit selectively reducing the terminal voltages of the secondary batteries; and a monitoring circuit directly connected to positive and negative electrodes of the secondary batteries to monitor the terminal voltages of the secondary batteries.

Abstract: A battery assembly controller controls terminal voltages of a plurality of series-connected secondary batteries to be equal. The controller includes a discharge circuit selectively reducing the terminal voltages of the secondary batteries; and a monitoring circuit directly connected to positive and negative electrodes of the secondary batteries to monitor the terminal voltages of the secondary batteries.

Abstract: A battery assembly controller controls terminal voltages of a plurality of series-connected secondary batteries to be equal. The controller includes a discharge circuit selectively reducing the terminal voltages of the secondary batteries; and a monitoring circuit directly connected to positive and negative electrodes of the secondary batteries to monitor the terminal voltages of the secondary batteries.

Abstract: In a DAC device, a distortion correction function g1(x) of a harmonic obtained from a result of a frequency analysis on an analog output signal of a DAC circuit is obtained. A correction value is determined based on the correction function g1(x) in accordance with an input digital signal, and is previously stored in a memory. A nonlinear correction circuit reads a corresponding correction value from the memory in accordance with the value of a digital signal output from a digital filter, and transmits the correction value to a subtractor. The subtractor subtracts the correction value from the digital signal output from the digital filter.

Abstract: A biosensor includes a working electrode 101, a counter electrode 102 opposing the working electrode 101, a working electrode terminal 103 and a working electrode reference terminal 10 connected to the working electrode 101 by wires, and a counter electrode terminal 104 connected to the counter electrode 102 by a wire. By employing a structure with at least three electrodes, it is possible to assay a target substance without being influenced by the line resistance on the working electrode side.

Abstract: A biosensor includes a working electrode 101, a counter electrode 102 opposing the working electrode 101, a working electrode terminal 103 and a working electrode reference terminal 10 connected to the working electrode 101 by wires, and a counter electrode terminal 104 connected to the counter electrode 102 by a wire. By employing a structure with at least three electrodes, it is possible to assay a target substance without being influenced by the line resistance on the working electrode side.