Allegro Multimedia A1301, A1302 manual Ratiometry, Output, Magnetic Characteristics

A1301 and

A1302

Continuous-Time Ratiometric Linear Hall Effect Sensors

DEVICE CHARACTERISTICS over operating temperature range, TA, and VCC = 5 V, unless otherwise noted

Characteristic			Symbol	Test Conditions	Min.	Typ.	Max.	Units
Electrical Characteristics
Supply Voltage			VCC	Running, TJ < 165°C	4.5	–	6	V
Supply Current			ICC	Output open	–	–	11	mA
Output Voltage			VOUT(High)	ISOURCE = –1 mA, Sens = nominal	4.65	4.7	–	V
			VOUT(Low)	ISINK = 1 mA, Sens = nominal	–	0.2	0.25	V
Output Bandwidth			BW		–	20	–	kHz
Power-On Time			tPO	VCC(min) to 0.95 VOUT; B = ±1400 G;	–	3	5	μs
				Slew rate = 4.5 V/μs to 4.5 V/100 ns
Output Resistance			ROUT	ISINK ≤ 1 mA, ISOURCE ≥ –1 mA	–	2	5	Ω
Wide Band Output Noise, rms			VOUTN	External output low pass filter ≤ 10 kHz;	–	150	–	μV
				Sens = nominal
Ratiometry
Quiescent Output Voltage Error			ΔVOUTQ(V)	TA = 25°C	–	–	±3.0	%
with respect to ΔV		1
	CC
Magnetic Sensitivity Error with			ΔSens(V)	TA = 25°C	–	–	±3.0	%
respect to ΔV	2
CC
Output
Linearity			Lin	TA = 25°C	–	–	±2.5	%
Symmetry			Sym	TA = 25°C	–	–	±3.0	%
Magnetic Characteristics
Quiescent Output Voltage			VOUTQ	B = 0 G; TA = 25°C	2.4	2.5	2.6	V
Quiescent Output Voltage over			VOUTQ(ΔTA)	B = 0 G	2.2	–	2.8	V
Operating Temperature Range
Magnetic Sensitivity			Sens	A1301; TA = 25°C	2.0	2.5	3.0	mV/G
				A1302; TA = 25°C	1.0	1.3	1.6	mV/G
Magnetic Sensitivity		over	Sens(ΔTA)	A1301	1.8	–	3.2	mV/G
Operating Temperature Range				A1302	0.85	–	1.75	mV/G

1Refer to equation (4) in Ratiometric section on page 4. 2Refer to equation (5) in Ratiometric section on page 4.

Allegro MicroSystems, Inc. 3

115 Northeast Cutoff, Box 15036

Worcester, Massachusetts 01615-0036 (508) 853-5000 www.allegromicro.com