LDC3114QPWR from TEXAS INSTRUMENTS, in a TSSOP-16. Pinout and pin descriptions extracted from the manufacturer datasheet (extract_pins, cross-checked by a second model); symbol, footprint, and 3D from KiCad-official CAD.

Pinout

Pin	Name	Type	Function
1	COM	passive	Common return current path for all LC resonator sensors; a capacitor should be connected from this pin to GND.
2	GND	power_in	Ground; both GND pins should be connected to the system ground on the PCB.
3	LPWRB	input	Normal/Low Power Mode select; set to VDD for Normal Power Mode or to ground for Low Power Mode.
4	VDD	power_in	Power supply; recommended operating range is 1.71 V to 1.89 V with 1.8 V nominal.
5	INTB	output	Interrupt output; polarity can be configured in Register 0x11.
6	IN3	passive	Channel 3 LC sensor input.
7	IN2	passive	Channel 2 LC sensor input.
8	IN1	passive	Channel 1 LC sensor input.
9	IN0	passive	Channel 0 LC sensor input.
10	GND	power_in	Ground; both GND pins should be connected to the system ground on the PCB.
11	OUT3	output	Channel 3 logic output; polarity can be configured in Register 0x1C.
12	OUT2	output	Channel 2 logic output; polarity can be configured in Register 0x1C.
13	OUT1	output	Channel 1 logic output; polarity can be configured in Register 0x1C.
14	SDA	bidirectional	I2C data line; I2C address is 0x2A.
15	OUT0	output	Channel 0 logic output; polarity can be configured in Register 0x1C.
16	SCL	input	I2C clock input.

Key specifications

Parameter	Value
Manufacturer	TEXAS INSTRUMENTS
Package	TSSOP-16
Category	Global Sourcing Parts
Pins	16

Electrical characteristics

Limits as printed in the datasheet (page.json metadata.characteristics carries them as data).

Parameter	Symbol	Min	Typ	Max	Unit	Conditions	Page
VDD Supply voltage	VDD			2.2	V		4
Voltage on SCL, SDA, INTB	VI	-0.3		3.6	V		4
Voltage on any other pin		-0.3		2.2	V	Maximum voltage across any two pins (not including SCL or SDA) is VDD + 0.3 V	4
Junction temperature	TJ	-40		135	℃		4
Storage temperature	TSTG	-65		125	°C		4
Electrostatic discharge, human body model (HBM)	V(ESD)	-1000		1000	V	Per ANSI/ESDA/JEDEC JS-001	4
Electrostatic discharge, charged device model (CDM)	V(ESD)	-250		250	V	Per ANSI/ESDA/JEDEC JS-002	4
Supply voltage	VDD	1.71		1.89	V		4
Ambient temperature (TSSOP Package)	TA	-40		125	°C		4
Supply voltage	VDD	1.71	1.8	1.89	V		4
Normal power mode supply current (4 channels)	IDDNP		0.46	2	mA	4 channels, 40 SPS per channel, 1 ms sampling window per channel, LPWRB = VDD, -40℃ ≤ TA ≤ 125℃	5
Normal power mode supply current (2 channels)	IDDNP		0.31	1	mA	2 channels, 40 SPS per channel, 1 ms sampling window per channel, LPWRB = VDD, -40℃ ≤ TA ≤ 125℃	5
Low power mode supply current	IDDLP		10	35	µA	1 channel, 1.25 SPS per channel, 1 ms sampling window per channel, LPWRB = Ground, -40℃ ≤ TA ≤ 125℃	5
Standby supply current	IDDSB		7	22	µA	No button active (EN = 0x00), -40℃ ≤ TA ≤ 125℃	5
Maximum sensor current drive	ISENSOR, MAX			2.5	mA	Registers SENSORn_CONFIG: RPn = 0	5
Minimum sensor parallel resonant impedance	RP, MIN	350			Ω		5
Maximum sensor parallel resonant impedance	RP, MAX			10	kΩ		5
Sensor resonant frequency	f SENSOR	5		30	MHz		5
Minimum sensor quality factor	QSENSOR, MIN	5					5
Maximum sensor quality factor	QSENSOR, MAX			30			5
Minimum normal power mode scan rate	SRNP, MIN	7	10	13	SPS	LPWRB = VDD	5
Maximum normal power mode scan rate	SRNP, MAX	56	80	104	SPS	LPWRB = VDD	5
Minimum low power mode scan rate	SRLP, MIN	0.438	0.625	0.813	SPS	LPWRB = Ground	5
Maximum low power mode scan rate	SRLP, MAX	3.5	5	6.5	SPS	LPWRB = Ground	5
Internal reference clock frequency variation from TA=25℃ to over temperature	fREF_CLK_TC			3	%	-40℃ ≤ TA ≤ 125℃	5
Input high voltage, LPWRB pin	VIH	0.8			×VDD		5
Input low voltage, LPWRB pin	VIL			0.2	×VDD		5
Output high voltage, OUTx pins	VOH	0.8			×VDD	ISOURCE = 400 µA	6
Output low voltage, OUTx pins	VOL			0.2	×VDD	ISINK = 400 µA	6
Digital input leakage current	IL	-500		500	nA		6
Output low voltage, INTB pin	VOL_INTB			0.4	V	3 mA sink current	6
Input high voltage	VIH_I2C	0.7			×VDD		6
Input low voltage	VIL_I2C			0.3	×VDD		6
Output low voltage	VOL_I2C			0.2	×VDD	3 mA sink current	6
Clock frequency	fSCL			400	kHz		6
Clock low time	tLOW	1.3			µs		6
Clock high time	tHIGH	0.6			µs		6
Hold time repeated START condition	tHD;STA	0.6			µs	After this period, the first clock pulse is generated.	6
Set-up time for a repeated START condition	tSU;STA	0.6			µs		6
Data hold time	tHD;DAT	0			µs		6
Data set-up time	tSU;DAT	100			ns		6
Set-up time for STOP condition	tSU;STO	0.6			µs		6
Bus free time between a STOP and START condition	tBUF	1.3			µs		6
Data valid time	tVD;DAT			0.9	µs		6
Data valid acknowledge time	tVD;ACK			0.9	µs		6
Pulse width of spikes that must be suppressed by the input filter	tSP			50	ns		6
Sensor input pin capacitance	CIN		17		pF		5
Sensor oscillation peak-to-peak voltage	VSENSOR, PP		0.9		V	Measured on the INn pins with reference to COM.	5
Internal reference clock frequency	fREF_CLK		44		MHz	TA=25℃	5
Hysteresis	HYSI2C		0.05		×VDD		6
Junction-to-ambient thermal resistance	RθJA		105.1		°C/W		4
Junction-to-case (top) thermal resistance	RθJC(top)		40.3		°C/W		4
Junction-to-board thermal resistance	RθJB		50.2		°C/W		4
Junction-to-top characterization parameter	ΨJT		3.6		°C/W		4
Junction-to-board characterization parameter	ΨJB		49.6		°C/W		4

Materials and finish

As the datasheet states them (page.json metadata.appearance; the 3D model's colours follow it).

Part	Material	Colour / plating	Datasheet says	Page
contacts	copper		capacitor value, refer to Setting COM Pin Capacitor. CCOM should be placed as close as possible to the COM pin. The COM signal should be tied to a small copper fill placed underneath the INn signals.	51

CAD (KiCad official)

Symbol: LDC3114QPWR
Footprint: Package_SO:TSSOP-16_4.4x5mm_P0.65mm
3D model: TSSOP-16 (KiCad packages3D, STEP)
3D model files: ldc3114qpwr-etched.step / ldc3114qpwr-etched.glb carry the MPN laser-etched on the die in a toggleable Adom.LaserEtch group (Fusion-ready); ldc3114qpwr.step / ldc3114qpwr.glb are the bare package body.

Provenance

Data extracted from the manufacturer datasheet, not a distributor listing:

Datasheet: TEXAS INSTRUMENTS datasheet (61 pp, sha256 43e81291d2ec106e, retrieved 2026-10-30, tier: manufacturer)
Extractor: parts-factory 2.0.0 / extract_pins 0.3, primary claude-haiku-5-5 (text), consensus claude-sonnet-5-5 (agreed), guards: pin_guards 0.1: passed. Pins are checked against the footprint pad set and their cited datasheet pages before publish.
CAD: KiCad official libraries (CC-BY-SA 4.0).

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LDC3114QPWR

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