3209 datasheet(3/12 Pages) ALLEGRO

3 / 12 page

3209 AND 3210

MICROPOWER,

ULTRA-SENSITIVE

HALL-EFFECT SWITCHES

www.allegromicro.com

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

–

BOPN

North pole to branded side

-60

-35

–

Release Points

BRPS

South pole to branded side

5.0

–

BRPN

North pole to branded side

–

-27

-5.0

Hysteresis

Bhys

|BOPx - BRPx|

–

7.7

–

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

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

Awake Time

tawake

µs

Period

tperiod

A3209Ex

240

480

720

µs

A3210Ex

Duty Cycle

d.c.

A3209Ex

–

12.5

–

A3210Ex

–

0.10

–

Chopping Frequency

–

340

–

kHz

Supply Current

IDD(EN)

Chip awake (enabled)

0.1

–

3.0

(2.5

≤ VDD ≤3.5 V)

IDD(DIS)

Chip asleep (disabled)

1.0

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

µA

A3210Ex, VDD = 3.5 V

–

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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