A1422LK データシートの表示（PDF） - Allegro MicroSystems

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A1422LK

High Precision Hall Effect AC-Coupled Differential Sensor IC with Integrated Filter Capacitor

Allegro MicroSystems 

A1421, A1422,

and A1423

High Precision Hall Effect AC-Coupled Differential

Sensor IC with Integrated Filter Capacitor

OPERATING CHARACTERISTICS, continued Valid at TA = – 40ºC to 150ºC, TJ ≤ 165°C; over operational air gap range and VCC

within operating range, unless otherwise noted. Typical operating parameters: VCC = 12 V and TA = 25°C.

Characteristic

Symbol

Test Conditions

Min. Typ. Max. Units

MAGNETIC CHARACTERISTICS5,6

1421, Bdiff increasing, fBdiff = 200 Hz, Bdiff = 50 Gp-p

VOUT switches from low (on) to high (off)

0.0 15.0 27.5 G

Operate Point

BOP

1422, Bdiff increasing, fBdiff = 200 Hz, Bdiff = 50 Gp-p

VOUT switches from high (off) to low (on)

5.0 15.0 35.0 G

1423, Bdiff increasing, fBdiff = 200 Hz, Bdiff = 200 Gp-p

VOUT switches from high (off) to low (on)

10.0 65.0 100.0 G

1421, Bdiff decreasing, fBdiff = 200 Hz, Bdiff = 50 Gp-p

VOUT switches from high (off) to low (on)

–12.5 0.0 7.5

G

Release Point

BRP

1422, Bdiff decreasing, fBdiff = 200 Hz, Bdiff = 50 Gp-p

VOUT switches from low (on) to high (off)

–35.0 –15.0 –5.0 G

1423, Bdiff decreasing, fBdiff = 200 Hz, Bdiff = 200 Gp-p

VOUT switches from low (on) to high (off)

–100 –65.0 –10.0 G

1421, fBdiff = 200 Hz, Bdiff = 50 Gp-p

5

15

35

G

Hysteresis

BHYS 1422, fBdiff = 200 Hz, Bdiff = 50 Gp-p

–

30

–

G

1423, fBdiff = 200 Hz, Bdiff = 200 Gp-p

–

130

–

G

Applied Magnetic Field7

Bdiff Differential p-p magnetic field

–

– 1250 G

1ICC is equivalent to ICC(max) + 3 mA.

2Time required to initialize device.

3Time required for the output switchpoints to be within specification.

4Output Rise Time will be dominated by the RC time constant.

5For lower frequencies, the absolute values of BOP, BRP, and BHYS may decrease due to delay induced by the high-pass filter.

6See Definitions of Terms section.

7Exceeding the maximum magnetic field may result in compromised absolute accuracy.

Allegro MicroSystems, Inc.

4

115 Northeast Cutoff

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

1.508.853.5000; www.allegromicro.com

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