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Compact Linear Hall Effect Sensor ALLEGRO A1318LLHLT-1-T with Surface Mount Package and Analog Output

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Compact Linear Hall Effect Sensor ALLEGRO A1318LLHLT-1-T with Surface Mount Package and Analog Output

Sensitivity : 1.35mV/Gs

Current - Supply : 7.7mA

Operating Temperature : -40℃~+150℃

Voltage - Supply : 3V~3.63V

Description : SOT-23W Linear, Compass (ICs) RoHS

Mfr. Part # : A1318LLHLT-1-T

Model Number : A1318LLHLT-1-T

Package : SOT-23W

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Product Overview

The Allegro A1318 and A1319 are linear Hall-effect sensor ICs designed for high accuracy and small package size applications such as displacement and angular position sensing. These temperature-stable devices feature non-volatile memory for end-of-line optimization of sensitivity and quiescent voltage output (QVO). They provide a ratiometric voltage output proportional to the applied magnetic field, with QVO adjusted around 50% of the supply voltage. Ideal for automotive and industrial applications requiring high accuracy across an extended temperature range of 40C to 150C, these ICs are available in miniature surface-mount (SOT-23W) and through-hole (SIP) packages.

Product Attributes

Brand: Allegro MicroSystems
Material: Lead (Pb) free, 100% matte-tin leadframe plating
Status: Not For New Design (NND) - Sale restricted to existing customer applications. Obsolescence probable in the near future. Samples no longer available.

Technical Specifications

Model	Description	Sensitivity (typ)	Package	Packing
A1318	Linear Hall-Effect Sensor IC with Analog Output	1.35 mV/G (A1318LLHLX-1-T) 2.5 mV/G (A1318LLHLX-2-T, A1318LUATN-2-T, A1318LUA-2-T)	3-pin SOT-23W (LH) 3-pin SIP (UA)	10,000 pieces/reel (LHX) 3,000 pieces/reel (LHT) 4,000 pieces/reel (UATN) 500 pieces/bag (UA)
A1319	Linear Hall-Effect Sensor IC with Analog Output	5 mV/G (A1319LLHLX-5-T, A1319LUATN-5-T, A1319LUA-5-T)	3-pin SOT-23W (LH) 3-pin SIP (UA)	10,000 pieces/reel (LHX) 3,000 pieces/reel (LHT) 4,000 pieces/reel (UATN) 500 pieces/bag (UA)

Characteristic	Symbol	Test Conditions	Min.	Typ.	Max.	Unit
Supply Voltage	VCC		3	3.3	3.63	V
Undervoltage Threshold (On)	VUVLOHI	TA = 25C and 150C			3	V
Undervoltage Threshold (Off)	VUVLOLO	TA = 25C and 150C	2.5			V
Supply Current	ICC	No load on VOUT		7.7	10	mA
Power-On Time	tPO	TA = 25C, CL(PROBE) = 10 pF		50		s
Internal Bandwidth	BWi	Small signal 3 dB		20		kHz
Chopping Frequency	fC	TA = 25C		400		kHz
Output Voltage Clamp High	VCLPHIGH	TA = 25C, B = +400 G, RL = 10 k	2.842	2.97	3.069	V
Output Voltage Clamp Low	VCLPLOW	TA = 25C, B = 400 G, RL = 10 k	0.264	0.33	0.462	V
Sensitivity Temperature Coefficient	TCSens	Programmed at 150C, relative to 25C	0.08	0.12	0.16	%/C
Linearity Sensitivity Error	LinERR			1.5		%
Symmetry Sensitivity Error	SymERR			1.5		%
Ratiometry Quiescent Voltage Output Error	RatVOUT(Q)	Across supply voltage range (relative to VCC = 5 V)		1.5		%
Ratiometry Sensitivity Error	RatSens	Across supply voltage range (relative to VCC = 5 V)		1.5		%
Ratiometry Clamp Error	RatVOUTCLP	TA = 25C, across supply voltage range (relative to VCC = 5 V)		1.5		%
Typical Quiescent Voltage Output Drift Across Temperature Range	VOUT(Q)	TA = 150C	-15 (A1318LLHLX-1-T) -18 (A1318LLHLX-2-T) -13 (A1318LUA-2-T) -20 (A1319LLHLX-5-T) -15 (A1319LUA-5-T)	5 (A1318LLHLX-1-T) -8 (A1318LLHLX-2-T) 0 (A1318LUA-2-T) -20 (A1319LLHLX-5-T) 0 (A1319LUA-5-T)	5 (A1318LLHLX-1-T) -8 (A1318LLHLX-2-T) 13 (A1318LUA-2-T) 20 (A1319LLHLX-5-T) 15 (A1319LUA-5-T)	mV
Sensitivity Drift Due to Package Hysteresis	SensPKG	TA = 25C, after temperature cycling		2		%
Operating Ambient Temperature Range	TA		40		150	C
Maximum Junction Temperature	TJ(max)				165	C
Storage Temperature	Tstg		65		170	C

Package Dimensions:

LH (SOT-23W): 3-pin, miniature, low-profile surface-mount package (2 mm 3 mm 1 mm).
UA (SIP): 3-pin, ultramini, single inline package (1.5 mm 4 mm 3 mm) for through-hole mounting.

Features and Benefits:

3.3 V supply operation
QVO temperature coefficient programmed at Allegro for improved accuracy
Miniature package options
High-bandwidth, low-noise analog output
High-speed chopping scheme minimizes QVO drift across operating temperature range
Temperature-stable quiescent voltage output and sensitivity
Precise recoverability after temperature cycling
Output voltage clamps provide short-circuit diagnostic capabilities
Undervoltage lockout (UVLO)
Wide ambient temperature range: 40C to 150C
Immune to mechanical stress
Enhanced EMC performance for stringent automotive applications

2311151454_ALLEGRO-A1318LLHLT-1-T_C17502670.pdf

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