A1359_16 datasheet(4/12 Pages) ALLEGRO

Part #	A1359

Description	Factory-Programmed Dual Output Linear Hall Effect Sensor IC With Analog and Pulse Width Modulated Outputs

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Manufacturer	ALLEGRO [Allegro MicroSystems]

Direct Link	http://www.allegromicro.com

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OPERATING CHARACTERISTICS Valid over full operating temperature range, TA, CBYPASS = 0.1 μF , VCC = 5 V,

unless otherwise noted

Characteristics

Symbol

Test Conditions

Min.

Typ.

Max.

Unit1

Electrical Characteristics

Supply Voltage

VCC

4.5

5.0

5.5

V

Undervoltage Threshold2

VUVLOHI

TA = 25°C (device powers on)

–

3

V

VUVLOLOW TA = 25°C (device powers off)

2.5

–

V

Supply Current

ICC

VCC = 5 V

–

10

13.5

mA

Supply Zener Clamp Voltage

VZ

TA = 25°C, ICC = 20 mA

6

8.3

–

V

Internal Bandwidth3

BWi

Small signal, –3 dB

–

2

–

kHz

Chopping Frequency3,4

fC

TA = 25°C

–

400

–

kHz

Analog Output Characteristics

Output Referred Noise3

VN

TA = 25°C, CBYPASS = 0.1 μF, Sens = 5 mV/G,

no load on VOUT

–

6

–

mV(p-p)

Input Referred RMS Noise Density3

VNRMS

T = 25°C, CBYPASS = open, no load on VOUT,

f << BWi

–

1.9

–

mG/√Hz

DC Output Resistance3

ROUT

–< 1

–

Ω

Output Load Resistance3

RL

VOUT to GND

4.7

–

kΩ

Output Load Capacitance3

CL

VOUT to GND

–

10

nF

Analog Output Current Limit

ILIMIT(ALG) RPULLUP = 0 Ω

10

–

80

mA

Output Voltage Clamp5

VCLPH

TA = 25°C, B = +350 G,

RL = 10 kΩ (VOUT to GND)

4.25

4.5

4.65

V

VCLPL

TA = 25°C, B = –350 G,

RL = 10 kΩ (VOUT to VCC)

0.40

0.5

0.70

V

Response Time3

tRESPONSE_

VOUT

Impulse magnetic field of 300 G

–

500

μs

Settling Time3

tSETTLEVOUT TA = 25°C, Primary Overload > 5000 G

–

750

μs

Power-On Time for Analog3

tPOVOUT

TA = 25°C, CL (probe) = 10 pF, on VOUT

–

250

–

μs

Delay to Clamp for Analog3

tCLPVOUT

TA = 25°C, CL = 10 nF, on VOUT

–

30

–

μs

PWM Output Characteristics

PWMOUT Saturation Voltage

VSAT

IPWMOUT(SINK) ≤ 20 mA, PWMOUT transistor on

–

0.6

V

IPWMOUT(SINK) ≤ 10 mA, PWMOUT transistor on

–

0.5

V

PWMOUT Current Limit

ILIMIT

RPULLUP = 0 Ω

30

60

110

mA

PWMOUT Leakage Current

ILEAK

VCC = GND, 0 V ≤ VPWMOUT ≤ 5 V,

PWMOUT transistor off

–

0.1

10

μA

PWMOUT Zener Clamp Voltage

VZOUT

IPWMOUT(SINK) = 10 mA, TA = 25ºC

28

–

V

PWMOUT Rise Time3

tr

TA = 25°C, RPULLUP = 2 kΩ, CL = 20 pF

–

3

–

μs

PWMOUT Fall Time3

tf

TA = 25°C, RPULLUP = 2 kΩ, CL = 20 pF

–

3

–

μs

Power-On Time for PWM3

tPOPWM

TA = 25°C, CL (probe) = 10 pF, on PWMOUT

–

500

–

μs

Delay to Clamp for PWM3

tCLPPWM

TA = 25°C, CL = 10 nF, on PWMOUT

–

250

–

μs

Response Time3

tRESPONSE_

PWM

TA = 25°C, Impulse magnetic field of 300 G

–

1.5

ms

Settling Time3

tSETTLEPWM TA = 25°C, Primary Overload > 5000 G

–

2.25

ms

Factory-Programmed Dual Output Linear Hall Effect Sensor IC

With Analog and Pulse Width Modulated Outputs

A1359

4

Allegro MicroSystems, LLC

115 Northeast Cutoff

Worcester, Massachusetts 01615-0036 U.S.A.

1.508.853.5000; www.allegromicro.com

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