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ZHCSET4B December 2015 – April 2024 LDC0851

PRODUCTION DATA

5.5 Electrical Characteristics

Over recommended operating conditions unless otherwise noted. V_DD= 3.3 V, EN tied to 3.3 V, T_A=25 °C, ADJ tied to GND.⁽¹⁾

PARAMETER		TEST CONDITIONS	MIN⁽²⁾	TYP⁽³⁾	MAX⁽²⁾	UNIT
POWER
V_DD	Supply Voltage		1.71		3.46	V
I_STATIC	Static Supply Current ⁽⁴⁾			0.70		mA
I_DYN	Dynamic Supply Current (not including sensor current)⁽⁴⁾	ƒ_SENSOR = 15 MHz C_PARASITIC = 22 pF		0.66		mA
I_SD	Shutdown Mode Supply Current			0.14	1	µA
SENSOR
I_{SENSOR_MAX}	Maximum sensor current⁽⁴⁾	V_DD = 1.71 V	4.35			mA
I_{SENSOR_MAX}	Maximum sensor current⁽⁴⁾	V_DD = 3.3 V	6			mA
L_{SENSOR_MIN}	Sensor Minimum Inductance⁽⁵⁾	C_TOTAL = 33 pF V_DD = 1.71 V		2.5
L_{SENSOR_MIN}	Sensor Minimum Inductance⁽⁵⁾	C_TOTAL = 33 pF V_DD = 3.3 V		1.8		µH
ƒ_{SENSOR_MAX}	Max Sensor Resonant Frequency⁽⁵⁾	Sensor inductance = 2 µH C_TOTAL = 33 pF		19		MHz
C_TOTAL	Minimum total capacitance on LCOM⁽⁵⁾ Includes parasitic pin capacitance and PCB parasitic capacitance			33		pF
C_IN	Pin parasitic capacitance on LCOM			12		pF
C_IN	Pin parasitic capacitance on LREF and LSENSE			8		pF
DETECTION
d_HYST	Switching distance hysteresis⁽⁶⁾			2.5 %
d_TOL	Switching threshold tolerance⁽⁶⁾			0.1 %
THRESHOLD ADJUST
V_ADJ	Adjust input range		0		V_DD/2	V
V_{ADJ_TOL}	Adjust threshold tolerance			± 6		mV

(1) Electrical Characteristics Table values apply only for factory testing conditions at the temperature indicated. Factory testing conditions result in very limited self-heating of the device such that T_J = T_A. No guarantee of parametric performance is indicated in the electrical tables under conditions of internal self-heating where T_J > T_A. Absolute Maximum Ratings indicate junction temperature limits beyond which the device may be permanently degraded, either mechanically or electrically.

(2) Limits are ensured by testing, design, or statistical analysis at 25°C. Limits over the operating temperature range are ensured through correlations using statistical quality control (SQC) method.

(3) Typical values represent the most likely parametric norm as determined at the time of characterization. Actual typical values may vary over time and will also depend on the application and configuration. The typical values are not tested and are not guaranteed on shipped production material.

(4) Refer to section Active Mode for a description and calculation of the various supply currents.

(5) See Sensor Design for sensor guidance.

(6) Two matched 10 mm diameter sensors were used with a switching distance of 3 mm. See Hysteresis for more information.