A1326LUA-T2 datasheet(3/12 Pages) ALLEGRO

Part #	A1326LUA-T2

Description	Low Noise, Linear Hall Effect Sensor ICs with Analog Output

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Manufacturer	ALLEGRO [Allegro MicroSystems]

Direct Link	http://www.allegromicro.com

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3 / 12 page

Linear Hall Effect Sensor ICs with Analog Output

A1324, A1325,

and A1326

3

Allegro MicroSystems, LLC

115 Northeast Cutoff

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

1.508.853.5000; www.allegromicro.com

OPERATING CHARACTERISTICS Valid throughout TA range, 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

Supply Current

ICC

No load on VOUT

–

6.9

9

mA

Power-On Time2

tPO

TA = 25°C, CL (PROBE) = 10 pF

–

32

–

µs

Supply Zener Clamp Voltage

VZ

TA = 25°C, ICC = 12 mA

6

8.3

–

V

Internal Bandwidth

BWi

Small signal, –3 dB

–

17

–

kHz

Chopping Frequency3

fC

TA = 25°C

–

400

–

kHz

Output Characteristics

Quiescent Voltage Output

VOUT(Q)

B = 0 G, TA = 25°C

2.425

2.500

2.575

V

Output Referred Noise

VN

A1324, TA = 25°C, CBYPASS = 0.1 µF

–

7.0

–

mV(p-p)

A1325, TA = 25°C, CBYPASS = 0.1 µF

–

4.4

–

mV(p-p)

A1326, TA = 25°C, CBYPASS = 0.1 µF

–

3.5

–

mV(p-p)

Input Referred RMS Noise Density

VNRMS

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

f << BWi

–

1.3

–

mG/√Hz

DC Output Resistance

ROUT

–

< 1

–

Ω

Output Load Resistance

RL

VOUT to VCC

4.7

–

kΩ

VOUT to GND

4.7

–

kΩ

Output Load Capacitance

CL

VOUT to GND

–

10

nF

Output Saturation Voltage

VOUT(sat)HIGH RPULLDOWN = 4.7 kΩ, VCC = 5 V

4.7

–

V

VOUT(sat)LOW RPULLUP = 4.7 kΩ, VCC = 5 V

–

0.30

V

Magnetic Characteristics

Sensitivity

Sens

A1324, TA = 25°C

4.750

5.000

5.250

mV/G

A1325, TA = 25°C

2.969

3.125

3.281

mV/G

A1326, TA = 25°C

2.375

2.500

2.625

mV/G

Sensitivity Temperature Coefficient

TCSens

LH package; programmed at TA = 150°C,

calculated relative to Sens at 25°C

–

0

–

%/°C

UA package; programmed at TA = 150°C,

calculated relative to Sens at 25°C

–

0.03

–

%/°C

Error Components

Sensitivity Drift at Maximum Ambient

Operating Temperature

∆Sens(TAmax)

LH package; from hot to room temperature

–5

–

5

%

UA package; from hot to room temperature

–2.5

–

7.5

%

Sensitivity Drift at Minimum Ambient

Operating Temperature

∆Sens(TAmin)

LH package; from cold to room temperature

–3.5

–

8.5

%

UA package; from cold to room temperature

–6

–

4

%

Continued on the next page…

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