A3209-UA datasheet(3/12 Pages) ALLEGRO

Part #	A3209-UA

Description	MICROPOWER, ULTRA-SENSITIVE HALL-EFFECT SWITCHES

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Manufacturer	ALLEGRO [Allegro MicroSystems]

Direct Link	http://www.allegromicro.com

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3209 AND 3210

MICROPOWER,

ULTRA-SENSITIVE

HALL-EFFECT SWITCHES

www.allegromicro.com

3

ELECTRICAL CHARACTERISTICS with CBYPASS = 0.1

µF,

over operating voltage and temperature range (unless otherwise specified).

Limits

Characteristic

Symbol

Test Conditions

Min.

Typ.

Max.

Units

Operate Points

BOPS

South pole to branded side

–

30

60

G

BOPN

North pole to branded side

-60

-35

–

G

Release Points

BRPS

South pole to branded side

5.0

22

–

G

BRPN

North pole to branded side

–

-27

-5.0

G

Hysteresis

Bhys

|BOPx - BRPx|

–

7.7

–

G

NOTES: 1. As used here, negative flux densities are defined as less than zero (algebraic convention) and -50 G is less than +10 G.

2. Typical Data is at TA = +25°C and VDD = 2.75 V and is for design information only.

MAGNETIC CHARACTERISTICS with CBYPASS = 0.1

µF,

over operating voltage and temperature range (unless otherwise specified).

Limits

Characteristic

Symbol

Test Conditions

Min.

Typ.

Max.

Units

Supply Voltage Range

VDD

Operating1)

2.5

2.75

3.5

V

Output Leakage Current

IOFF

VOUT = 3.5 V, BRPN < B < BRPS

–

«1.0

1.0

µA

Output On Voltage

VOUT

IOUT = 1 mA, VDD = 2.5 V

–

105

300

mV

Awake Time

tawake

30

60

90

µs

Period

tperiod

A3209Ex

240

480

720

µs

A3210Ex

30

60

90

ms

Duty Cycle

d.c.

A3209Ex

–

12.5

–

%

A3210Ex

–

0.10

–

%

Chopping Frequency

fC

–

340

–

kHz

Supply Current

IDD(EN)

Chip awake (enabled)

0.1

–

3.0

mA

(2.5

≤ VDD ≤3.5 V)

IDD(DIS)

Chip asleep (disabled)

1.0

10

50

µA

IDD(AVG)

A3209Ex, VDD = 2.75 V

–

145

425

µA

A3209Ex, VDD = 3.5 V

–

195

425

µA

A3210Ex, VDD = 2.75 V

–

8.8

25

µA

A3210Ex, VDD = 3.5 V

–

13

60

µA

NOTES: 1. Operate and release points will vary with supply voltage.

2. BOPx = operate point (output turns ON); BRPx = release point (output turns OFF).

3. Typical Data is at TA = +25°C and VDD = 2.75 V and is for design information only.

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