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programmable current sensor Allegro A1366LKTTN-2-T with linear Hall effect technology and temperature compensation

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programmable current sensor Allegro A1366LKTTN-2-T with linear Hall effect technology and temperature compensation

Sensitivity : 2.5mV/Gs

Current - Supply : 10mA

Operating Temperature : -40℃~+150℃

Voltage - Supply : 4.5V~5.5V

Description : SIP-4 Linear, Compass (ICs) RoHS

Mfr. Part # : A1366LKTTN-2-T

Model Number : A1366LKTTN-2-T

Package : SIP-4

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Product Overview

The Allegro A1366 is a factory-programmable linear Hall-effect current sensor IC designed for high accuracy and resolution. It features proprietary linearly interpolated temperature compensation technology, ensuring virtually flat sensitivity and offset across its operating temperature range. This makes it ideal for demanding current sensing applications such as HEV inverters, DC-to-DC converters, and electric power steering (EPS). The device offers a ratiometric voltage output proportional to the applied magnetic field, with factory-programmed sensitivity and quiescent voltage for accuracy under 1% typical. It incorporates advanced BiCMOS interface circuitry, a low-noise amplifier, and dynamic offset cancellation for industry-leading sensing resolution at a 120 kHz bandwidth. Additional features include built-in broken ground wire detection and undervoltage lockout for enhanced reliability in automotive environments.

Product Attributes

Brand: Allegro
Technology: Linear Hall-effect
Programming: Factory-programmable
Temperature Compensation: Proprietary linear interpolated
Output: Ratiometric voltage output
Certifications: AEC-Q100 automotive qualified
Package: 4-pin SIP (suffix KT)
Lead-Free: Yes
Lead Plating: 100% matte tin

Technical Specifications

Characteristic	Symbol	Test Conditions	Min.	Typ.	Max.	Unit
General Electrical Characteristics
Supply Voltage	VCC		4.5	5.0	5.5	V
Supply Current	ICC	No load on VOUT		10	15	mA
Internal Bandwidth	BWi	Small signal 3 dB, CL = 1 nF, TA = 25C		120		kHz
Performance Characteristics (TA = 40C to 150C, CBYPASS = 0.1 F, VCC = 5 V)
Sensitivity (Typ.)	SensTA	Measured using 600 G, TA = 25C (A1366LKT-1-T)	0.975	1	1.025	mV/G
Sensitivity (Typ.)	SensTA	Measured using 400 G, TA = 25C (A1366LKT-2-T)	2.437	2.5	2.563	mV/G
Sensitivity (Typ.)	SensTA	Measured using 200 G, TA = 25C (A1366LKT-5-T)	4.875	5	5.125	mV/G
Sensitivity (Typ.)	SensTA	Measured using 100 G, TA = 25C (A1366LKT-10-T)	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	%
Quiescent Output Voltage (Typ.)	VOUT(Q)TA	TA = 25C	2.490	2.500	2.510	V
Noise (Peak-to-Peak)	VN	TA = 25C, CL = 1 nF		3.15 (LKT-1-T)		mVP-P
Noise (Peak-to-Peak)	VN	TA = 25C, CL = 1 nF		7.875 (LKT-2-T)		mVP-P
Noise (Peak-to-Peak)	VN	TA = 25C, CL = 1 nF		15.75 (LKT-5-T)		mVP-P
Noise (Peak-to-Peak)	VN	TA = 25C, CL = 1 nF		31.5 (LKT-10-T)		mVP-P
Operating Ambient Temperature	TA		40		150	C
Storage Temperature	Tstg		65		165	C
Package Thermal Resistance	RJA	On 1-layer PCB with exposed copper limited to solder pads		174		C/W
Selection Guide
Part Number	Leadform	Package	Sensitivity (Typ.)
A1366LKTTN-1-T	TN (Straight)	4-pin SIP	1 mV/G
A1366LKTTN-2-T	TN (Straight)	4-pin SIP	2.5 mV/G
A1366LKTTN-5-T	TN (Straight)	4-pin SIP	5 mV/G
A1366LKTTN-10-T	TN (Straight)	4-pin SIP	10 mV/G

2304140030_ALLEGRO-A1366LKTTN-2-T_C2654936.pdf

programmable current sensor Allegro A1366LKTTN-2-T with linear Hall effect technology and temperature compensation Images

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