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programmable linear Hall effect current sensor IC Allegro A1366LKTTF 10 T with temperature compensation

Product Overview

The Allegro A1366 is a factory-programmable linear Hall-effect current sensor IC designed for high accuracy and resolution in current sensing applications. It features proprietary linearly interpolated temperature compensation technology for virtually flat sensitivity and offset across its operating temperature range. This device is ideal for demanding applications such as HEV inverters, DC-to-DC converters, and electric power steering (EPS). With a ratiometric voltage output proportional to the applied magnetic field, it offers industry-leading sensing resolution at a 120 kHz bandwidth. Integrated features like broken ground wire detection and undervoltage lockout enhance reliability in automotive environments.

Product Attributes

Brand: Allegro
Technology: Linear Hall-effect sensor IC
Programming: Factory-programmable
Temperature Compensation: Proprietary linearly interpolated temperature compensation
Output Type: Ratiometric analog voltage output
Certifications: AEC-Q100 automotive qualified
Package: 4-pin SIP (suffix KT)
Leadform Options: TN (Straight), TH
Material: Lead (Pb) free, 100% matte tin leadframe plating

Technical Specifications

Characteristic	Symbol	Test Conditions	Min.	Typ.	Max.	Unit
ELECTRICAL CHARACTERISTICS
Supply Voltage	VCC		4.5	5.0	5.5	V
Supply Current	ICC	No load on VOUT		10	15	mA
Power-On Time	tPO	TA = 25C, CBYPASS = Open, CL = 1 nF, Sens = 2.5 mV/G, constant magnetic field of 320 G		78		s
Temperature Compensation Power-On Time	tTC	TA = 150C, CBYPASS = Open, CL= 1 nF, Sens = 2.5 mV/G, constant magnetic field of 320 G		30		s
Undervoltage Lockout (UVLO) Threshold	VUVLOH	TA = 25C, VCC rising and device function enabled		4		V
Undervoltage Lockout (UVLO) Threshold	VUVLOL	TA = 25C, VCC falling and device function disabled		3.5		V
UVLO Enable Delay Time	tUVLOE	TA = 25C, CBYPASS = Open, CL = 1 nF, Sens = 2.5 mV/G, VCC Fall Time (5 V to 3 V) = 1.5 s		64		s
UVLO Disable Delay Time	tUVLOD	TA = 25C, CBYPASS = Open, CL = 1 nF, Sens = 2.5 mV/G, VCC Recover Time (3 V to 5 V) = 1.5 s		14		s
Power-On Reset Voltage	VPORH	TA = 25C, VCC rising		2.6		V
Power-On Reset Voltage	VPORL	TA = 25C, VCC falling		2.3		V
Power-On Reset Release Time	tPORR	TA = 25C, VCC rising		64		s
Internal Bandwidth	BWi	Small signal 3 dB, CL = 1 nF, TA = 25C		120		kHz
OUTPUT CHARACTERISTICS
Propagation Delay Time	tPD	TA = 25C, magnetic field step of 320 G, CL = 1 nF, Sens = 2.5 mV/G		2.2		s
Rise Time	tR	TA = 25C, magnetic field step of 320 G, CL = 1 nF, Sens = 2.5 mV/G		3.6		s
Response Time	tRESPONSE	TA = 25C, magnetic field step of 320 G, CL = 1 nF, Sens = 2.5 mV/G		3.7		s
Output Saturation Voltage (High)	VSAT(HIGH)	TA = 25C, RL(PULLDWN) = 10 k to GND	4.7			V
Output Saturation Voltage (Low)	VSAT(LOW)	TA = 25C, RL(PULLUP) = 10 k to VCC			400	mV
Broken Wire Voltage (High)	VBRK(HIGH)	TA = 25C, RL(PULLUP) = 10 k to VCC		VCC		V
Broken Wire Voltage (Low)	VBRK(LOW)	TA = 25C, RL(PULLDWN) = 10 k to GND		100		mV
Noise	BN	TA = 25C, CL = 1 nF, Bandwidth = BWi		1.1		mGRMS/(Hz)
Output Load Resistance (Pull-up)	RL(PULLUP)	VOUT to VCC	4.7			k
Output Load Resistance (Pull-down)	RL(PULLDWN)	VOUT to GND	4.7			k
Output Load Capacitance	CL	VOUT to GND		1	10	nF
ERROR COMPONENTS
Linearity Sensitivity Error	LinERR		< 0.25	1	%
Symmetry Sensitivity Error	SymERR		< 0.25	1	%
Ratiometry Quiescent Voltage Output Error	RatERRVOUT(Q)	Through supply voltage range (relative to VCC = 5 V)	1	0	1	%
Ratiometry Sensitivity Error	RatERRSens	Through supply voltage range (relative to VCC = 5 V)		1		%
PERFORMANCE CHARACTERISTICS (A1366LKT-1-T)
Sensitivity	SensTA	Measured using 600 G, TA = 25C	0.975	1	1.025	mV/G
Sensitivity Drift through Temperature Range	SensTC	TA = 25C to 150C	2.5	0	2.5	%
Sensitivity Drift through Temperature Range	SensTC	TA = 40C to 25C	2.5	0	2.5	%
Sensitivity Drift Due to Package Hysteresis	SensPKG	TA = 25C, after temperature cycling, 25C to 150C and back to 25C		1.25		%
Noise	VN	TA = 25C, CL = 1 nF		3.15		mVP-P
Noise	VN	TA = 25C, CL = 1 nF		0.5		mVRMS
Quiescent Output Voltage	VOUT(Q)TA	TA = 25C	2.490	2.500	2.510	V
Quiescent Output Voltage	VOUT(Q)HT	TA = 25C to 150C	2.490	2.500	2.510	V
Quiescent Output Voltage	VOUT(Q)LT	TA = 40C to 25C	2.490	2.500	2.510	V
PERFORMANCE CHARACTERISTICS (A1366LKT-2-T)
Sensitivity	SensTA	Measured using 400 G, TA = 25C	2.437	2.5	2.563	mV/G
Sensitivity Drift through Temperature Range	SensTC	TA = 25C to 150C	2.5	0	2.5	%
Sensitivity Drift through Temperature Range	SensTC	TA = 40C to 25C	2.5	0	2.5	%
Sensitivity Drift Due to Package Hysteresis	SensPKG	TA = 25C, after temperature cycling, 25C to 150C and back to 25C		1.25		%
Noise	VN	TA = 25C, CL = 1 nF		7.875		mVP-P
Noise	VN	TA = 25C, CL = 1 nF		1.25		mVRMS
Quiescent Output Voltage	VOUT(Q)TA	TA = 25C	2.490	2.500	2.510	V
Quiescent Output Voltage	VOUT(Q)HT	TA = 25C to 150C	2.490	2.500	2.510	V
Quiescent Output Voltage	VOUT(Q)LT	TA = 40C to 25C	2.490	2.500	2.510	V
PERFORMANCE CHARACTERISTICS (A1366LKT-5-T)
Sensitivity	SensTA	Measured using 200 G, TA = 25C	4.875	5	5.125	mV/G
Sensitivity Drift through Temperature Range	SensTC	TA = 25C to 150C	2.5	0	2.5	%
Sensitivity Drift through Temperature Range	SensTC	TA = 40C to 25C	2.5	0	2.5	%
Sensitivity Drift Due to Package Hysteresis	SensPKG	TA = 25C, after temperature cycling, 25C to 150C and back to 25C		1.25		%
Noise	VN	TA = 25C, CL = 1 nF		15.75		mVP-P
Noise	VN	TA = 25C, CL = 1 nF		2.5		mVRMS
Quiescent Output Voltage	VOUT(Q)TA	TA = 25C	2.490	2.500	2.510	V
Quiescent Output Voltage	VOUT(Q)HT	TA = 25C to 150C	2.490	2.500	2.510	V
Quiescent Output Voltage	VOUT(Q)LT	TA = 40C to 25C	2.490	2.500	2.510	V
PERFORMANCE CHARACTERISTICS (A1366LKT-10-T)
Sensitivity	SensTA	Measured using 100 G, TA = 25C	9.75	10	10.25	mV/G
Sensitivity Drift through Temperature Range	SensTC	TA = 25C to 150C	2.5	0	2.5	%
Sensitivity Drift through Temperature Range	SensTC	TA = 40C to 25C	2.5	0	2.5	%
Sensitivity Drift Due to Package Hysteresis	SensPKG	TA = 25C, after temperature cycling, 25C to 150C and back to 25C		1.25		%
Noise	VN	TA = 25C, CL = 1 nF		31.5		mVP-P
Noise	VN	TA = 25C, CL = 1 nF		5		mVRMS
Quiescent Output Voltage	VOUT(Q)TA	TA = 25C	2.485	2.500	2.515	V
Quiescent Output Voltage	VOUT(Q)HT	TA = 25C to 150C	2.485	2.500	2.515	V
Quiescent Output Voltage	VOUT(Q)LT	TA = 40C to 25C	2.485	2.500	2.515	V
GENERAL CHARACTERISTICS
Operating Ambient Temperature	TA		40		150	C
Storage Temperature	Tstg		65		165	C
Maximum Junction Temperature	TJ(max)				165	C
Package Thermal Resistance	RJA	On 1-layer PCB with exposed copper limited to solder pads		174		C/W

2401220948_ALLEGRO-A1366LKTTF-10-T_C19761415.pdf

programmable linear Hall effect current sensor IC Allegro A1366LKTTF 10 T with temperature compensation

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Categories	Linear, Compass (ICs)
Description:	SIP-4 Linear, Compass (ICs) RoHS
Mfr. Part #:	A1366LKTTF-10-T
Model Number:	A1366LKTTF-10-T
Package:	SIP-4