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A1323 – Allegro Multimedia A1321 User Manual

Page 5

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Ratiometric Linear Hall Effect Sensor ICs

for High-Temperature Operation

A1321, A1322,

and

A1323

4

Allegro MicroSystems, Inc.

115 Northeast Cutoff

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

1.508.853.5000; www.allegromicro.com

DEVICE CHARACTERISTICS

1

over operating temperature (T

A

) range, unless otherwise noted

Characteristic

Symbol

Test Conditions

Min.

Typ.

2

Max.

Units

Electrical Characteristics;

V

CC

= 5 V, unless otherwise noted

Supply Voltage

V

cc(op)

Operating; Tj < 165°C

4.5

5.0

5.5

V

Supply Current

I

cc

B = 0, I

out

= 0

5.6

8

mA

Quiescent Voltage

V

out(q)

B = 0, T

A

= 25ºC, I

out

= 1 mA

2.425

2.5

2.575

V

Output Voltage

3

V

out(H)

B = +X, I

out

= –1 mA

4.7

V

V

out(L)

B = –X, I

out

= 1 mA

0.2

V

Output Source Current Limit

3

I

out(LM)

B = –X, V

out

→ 0

–1.0

–1.5

mA

Supply Zener Clamp Voltage

V

Z

I

cc

= 11 mA = I

cc(max)

+ 3

6

8.3

V

Output Bandwidth

BW

30

kHz

Clock Frequency

f

C

150

kHz

Output Characteristics;

over V

CC

range, unless otherwise noted

Noise, Peak-to-Peak

4

V

N

A1321; C

bypass

= 0.1 μF, no load

40

mV

A1322; C

bypass

= 0.1 μF, no load

25

mV

A1323; C

bypass

= 0.1 μF, no load

20

mV

Output Resistance

R

out

I

out

≤ ±1 mA

1.5

3

Ω

Output Load Resistance

R

L

I

out

≤ ±1 mA, VOUT to GND

4.7

Output Load Capacitance

C

L

VOUT to GND

10

nF

1

Negative current is defi ned as conventional current coming out of (sourced from) the specifi ed device terminal.

2

Typical data is at T

A

= 25°C. They are for initial design estimations only, and assume optimum manufacturing and application

conditions. Performance may vary for individual units, within the specifi ed maximum and minimum limits.

3

In these tests, the vector X is intended to represent positive and negative fi elds suffi cient to swing the output driver between fully OFF

and saturated (ON), respectively. It is NOT intended to indicate a range of linear operation.

4

Noise specifi cation includes both digital and analog noise.