LDC3114-Q1 Series

Automotive 4-channel inductance-to-digital converter for low-power proximity & touch-button sensing

Catalog

Automotive 4-channel inductance-to-digital converter for low-power proximity & touch-button sensing

Part	Operating Temperature [Max]	Operating Temperature [Min]	Data Interface	Supplier Device Package	Type	Sampling Rate (Per Second)	Voltage - Supply [Max]	Voltage - Supply [Max]	Voltage - Supply [Min]	Voltage - Supply [Min]	Mounting Type	Package / Case [x]	Package / Case	Package / Case [y]	Number of Channels	Voltage Supply Source
Texas Instruments LDC3114QPWTQ1	125 °C	-40 °C	I2C	16-TSSOP	Touch and Inductance	160 Per Second	1.89 V	1.89 V	1.71 V	1.71 V	Surface Mount	0.173 in	16-TSSOP	4.4 mm	4	Single Supply
Texas Instruments LDC3114QPWRQ1	125 °C	-40 °C	I2C	16-TSSOP	Touch and Inductance	160 Per Second	1.89 V	1.89 V	1.71 V	1.71 V	Surface Mount	0.173 in	16-TSSOP	4.4 mm	4	Single Supply

Catalog

Automotive 4-channel inductance-to-digital converter for low-power proximity & touch-button sensing

Key Features

• AEC-Q100 qualified with the following results:Device temperature grade 1: –40°C to +125°C ambient operating temperatureDevice HBM ESD classification level 2Device CDM ESD classification level C4BFunctional Safety-CapableDocumentation available to aid functional safety system designMultiple modes of operation:Raw data mode: access pre-processed inductance measurement data to enable advanced algorithms on MCU for linear sensingButton mode: button press detection with baseline tracking and advanced on-chip post processingForce level measurement of touch buttonsPin and register compatible toLDC2114Robust EMI performance allows for CISPR 22 and CISPR 24 complianceFour independent channel operationConfigurable scan rates:0.625 SPS to 160 SPSContinuous scanning optionAdvanced button press detection algorithms:Adjustable force threshold per buttonEnvironmental shift compensationSimultaneous button press detectionLow current consumption:One button: 6 µA at 0.625 SPSTwo buttons: 72 µA at 20 SPSInterface:1.8-V and 3.3-V compliant I2C and INTB1.8-V logic output per channel for buttonsAEC-Q100 qualified with the following results:Device temperature grade 1: –40°C to +125°C ambient operating temperatureDevice HBM ESD classification level 2Device CDM ESD classification level C4BFunctional Safety-CapableDocumentation available to aid functional safety system designMultiple modes of operation:Raw data mode: access pre-processed inductance measurement data to enable advanced algorithms on MCU for linear sensingButton mode: button press detection with baseline tracking and advanced on-chip post processingForce level measurement of touch buttonsPin and register compatible toLDC2114Robust EMI performance allows for CISPR 22 and CISPR 24 complianceFour independent channel operationConfigurable scan rates:0.625 SPS to 160 SPSContinuous scanning optionAdvanced button press detection algorithms:Adjustable force threshold per buttonEnvironmental shift compensationSimultaneous button press detectionLow current consumption:One button: 6 µA at 0.625 SPSTwo buttons: 72 µA at 20 SPSInterface:1.8-V and 3.3-V compliant I2C and INTB1.8-V logic output per channel for buttons

Description

The LDC3114-Q1 is an inductive sensing device that enables touch button design for human machine interface (HMI) on a wide variety of materials by measuring small deflections of conductive targets using a coil that can be implemented on a small printed circuit board (PCB) located behind the panel. This technology can be used for precise linear position sensing of metal targets for automotive, consumer and industrial applications by allowing access to the raw data representing the inductance value. Inductive sensing solution is insensitive to humidity or non-conductive contaminants such as oil and dirt. The button mode of LDC3114-Q1 is able to automatically correct for any deformation in the conductive targets. The LDC3114-Q1 offers well-matched channels, which allow for differential and ratiometric measurements which enable compensation of environmental and aging conditions such as temperature and mechanical drift. The LDC3114-Q1 includes an ultra-low power mode intended for power on/off buttons or position sensors in battery powered applications. The LDC3114-Q1 is easily configured through an I2C interface. The LDC3114-Q1 is available in a 16-pin TSSOP package. The LDC3114-Q1 is an inductive sensing device that enables touch button design for human machine interface (HMI) on a wide variety of materials by measuring small deflections of conductive targets using a coil that can be implemented on a small printed circuit board (PCB) located behind the panel. This technology can be used for precise linear position sensing of metal targets for automotive, consumer and industrial applications by allowing access to the raw data representing the inductance value. Inductive sensing solution is insensitive to humidity or non-conductive contaminants such as oil and dirt. The button mode of LDC3114-Q1 is able to automatically correct for any deformation in the conductive targets. The LDC3114-Q1 offers well-matched channels, which allow for differential and ratiometric measurements which enable compensation of environmental and aging conditions such as temperature and mechanical drift. The LDC3114-Q1 includes an ultra-low power mode intended for power on/off buttons or position sensors in battery powered applications. The LDC3114-Q1 is easily configured through an I2C interface. The LDC3114-Q1 is available in a 16-pin TSSOP package.