# US 9,753,064 B2 · Method and apparatus for metering a voltage signal > Agents: this data is available as JSON from the patentgrep API and MCP server — see https://patentgrep.com/llms.txt - Number: US 9,753,064 B2 - Document ID: US9753064B2 - Status: Granted - Kind: B2 - Application number: 14/785,635 - Filed: 2013-04-22 - Published: 2016-03-03 - Granted: 2017-09-05 - Earliest claimed: 2013-04-22 - Assignees: NXP USA, Inc. - Applicants: Jerome Enjalbert - Inventors: Jerome Enjalbert - Web page: https://patentgrep.com/patent/US9753064B2 ## CPC - G01R 19/22: using conversion of AC into DC - G01R 19/2509: {Details concerning sampling, digitizing or waveform capturing} - G01R 31/3828: using current integration - G01R 31/3835: involving only voltage measurements - G01R 1/203: {Resistors used for electric measuring, e.g. decade resistors standards, resistors for comparators, series resistors, shunts (resistors in general H01C; microwave or radiowave terminations H01P1/26; coupling devices H01R)} - G01R: MEASURING ELECTRIC VARIABLES; MEASURING MAGNETIC VARIABLES (indicating correct tuning of resonant circuits H03J3/12) ## Abstract A voltage metering module for metering a voltage signal at least one analogue to digital converter (ADC) component arranged to receive at an input thereof a voltage signal and to generate a digital signal representative of the received voltage signal. The at least one ADC component includes at least one sampling network controllable to sample the received voltage signal for conversion to a digital signal representative of the received voltage signal and at least one compensation network operably coupled in parallel with the sampling network and controllable to sample the received voltage signal such that an input current of the compensation network at least partially compensates for a component of an input current of the sampling network. ## Claims ### Claim 1 A voltage metering module for metering a voltage signal, the voltage metering module comprising: at least one analogue to digital converter (ADC) component arranged to receive at an input thereof a voltage signal and to generate a digital signal representative of the received voltage signal, the at least one ADC component comprising: at least one sampling network controllable to sample the received voltage signal for conversion to a digital signal representative of the received voltage signal; and at least one compensation network operably coupled in parallel with the sampling network and controllable to sample the received voltage signal such that an input current of the compensation network at least partially compensates for a component of an input current of the sampling network. ### Claim 2 (depends on 1) The voltage metering module of claim 1, wherein the at least one compensation network is arranged to sample the received voltage signal simultaneously with the sampling network sampling the received voltage signal. ### Claim 3 (depends on 2) The voltage metering module of claim 2, wherein the first reference voltage comprises a differential voltage signal. ### Claim 4 (depends on 3) The voltage metering module of claim 3, wherein the first reference voltage is centered about a common-mode voltage of the received voltage signal. ### Claim 5 (depends on 2) The voltage metering module of claim 2, wherein the ADC component comprises at least one further switching component controllable to selectively couple an input of the compensation network to one of: (i) the voltage signal received at the input of the ADC component; and (ii) at least one further reference voltage signal, wherein the at least one further switching arrangement is arranged to: operably couple the input of the compensation network to the voltage signal received at the input of the ADC component when the ADC component is in a first operational phase; and operably couple the input of the compensation network to the at least one further reference voltage signal when the ADC component is in a second operational phase. ### Claim 6 (depends on 5) The voltage metering module of claim 5, wherein the at least one further switching arrangement is controllable to selectively configure a polarity of the at least one further reference voltage signal. ### Claim 7 (depends on 5) The voltage metering module of claim 5, wherein the at least one further reference voltage signal compromises a magnitude three times the magnitude of the first reference voltage signal. ### Claim 8 (depends on 1) The voltage metering module of claim 1, wherein the ADC component comprises a first switching arrangement controllable to selectively couple an input of the sampling network to one of: (i) the voltage signal received at the input of the ADC component; and (ii) a first reference voltage signal, wherein the first switching arrangement is arranged to: operably couple the input of the sampling network to the voltage signal received at the input of the ADC component when the ADC component is in a first operational phase; and operably couple the input of the sampling network to the first reference voltage signal when the ADC component is in a second operational phase. ### Claim 9 (depends on 8) The voltage metering module of claim 8, wherein the first switching arrangement is controllable to selectively configure a polarity of the first reference voltage signal. ### Claim 10 (depends on 9) The voltage metering module of claim 9, wherein the first switching arrangement is controllable to selectively configure the polarity of the first reference voltage signal based at least partly on a logical state of a digital signal representative of an integrated sampled voltage signal. ### Claim 11 (depends on 1) The voltage metering module of claim 1, wherein the ADC component further comprises an integrator component arranged to perform integration of the received voltage signals sampled by the sampling network to generate an integrated sampled voltage signal. ### Claim 12 (depends on 11) The voltage metering module of claim 11, wherein the at least one sampling network is configurable to operate in: a first, sampling mode in which the sampling network samples the received voltage signal; and a second, integration mode in which the sampled voltage signal is provided to the integrator component. ### Claim 13 (depends on 12) The voltage metering module of claim 12, wherein the at least one compensation network is controllable to operate in a sampling mode equivalent to the sampling mode of the at least one sampling network. ### Claim 14 (depends on 11) The voltage metering module of claim 11, wherein the ADC component further comprises a comparator component arranged to receive the integrated sampled voltage signal generated by the integrator component, and to output a digital signal based at least partly on the received integrated sampled voltage signal. ### Claim 15 (depends on 1) The voltage metering module of claim 1, wherein the voltage metering module comprises at least one resistance/capacitance, RC, filter component arranged to perform filtering of a voltage signal to be metered, and the at least one analogue to digital converter, ADC, component is arranged to receive the filtered voltage signal at the input thereof and to generate a digital signal representative of the filtered voltage signal. ### Claim 16 (depends on 1) The voltage metering module of claim 1, wherein the voltage metering module comprises a sense resistance operably coupled in series with a current flow path and arranged to generate a voltage signal to be metered there across representative of a current flow through the current flow path. ### Claim 17 (depends on 1) The voltage metering module of claim 1, wherein the ADC component is arranged to receive at an input thereof a differential voltage signal and to generate a digital signal representative of the received differential voltage signal; the at least one ADC component comprising: at least one sampling network controllable to sample the received differential voltage signal for conversion to a digital signal representative of the received differential voltage signal; and at least one compensation network operably coupled in parallel with the sampling network and controllable to sample the received differential voltage signal such that an input current of the compensation network at least partially compensates for a differential component of an input current of the sampling network. ### Claim 18 A battery state-of-charge module comprising: at least one voltage metering module comprising at least one analogue to digital converter (ADC) component arranged to receive at an input thereof a voltage signal and to generate a digital signal representative of the received voltage signal, the at least one ADC component comprising: at least one sampling network controllable to sample the received voltage signal for conversion to a digital signal representative of the received voltage signal; and at least one compensation network operably coupled in parallel with the sampling network and controllable to sample the received voltage signal such that an input current of the compensation network at least partially compensates for a component of an input current of the sampling network. ### Claim 19 An integrated circuit device comprising: at least one voltage metering module comprising at least one analogue to digital converter (ADC) component arranged to receive at an input thereof a voltage signal and to generate a digital signal representative of the received voltage signal, the at least one ADC component comprising: at least one sampling network controllable to sample the received voltage signal for conversion to a digital signal representative of the received voltage signal; and at least one compensation network operably coupled in parallel with the sampling network and controllable to sample the received voltage signal such that an input current of the compensation network at least partially compensates for a component of an input current of the sampling network.