A1421LK-T(2005) Просмотр технического описания (PDF) - Allegro MicroSystems

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A1421LK-T
(Rev.:2005)

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

Allegro MicroSystems 

A1421, A1422, A1423

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

OPERATING CHARACTERISTICS 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

ELECTRICAL CHARACTERISTICS

Supply Voltage

VCC Operating; TJ < TJ(max)

Supply Current

ICC

Output Saturation Voltage

VOUT(SAT) ISINK = 20 mA

Output Leakage Current

IOFF VOUT = 24 V, Bdiff = 0

PROTECTION COMPONENT CHARACTERISTICS

4.0 12 26.5 V

–

4.2 7.0 mA

–

140 400 mV

–

–

5

μA

Reverse Supply Current

Supply Zener Current

Supply Zener Clamp Voltage1

Output Zener Current

Output Zener Clamp Voltage

IRCC VCC = –18 V

IZSupply VS = 28 V

VZSupply ICC = 10 mA, TA = 25°C

IZOutput VOUT = 28 V

VZOutput IOUT = 3 mA, TA = 25°C

–

–

–1 mA

–

–

10 mA

28

33

37

V

–

–

3

mA

28

–

–

V

Output Short Circuit Current Limit

IOUTS(lim)

–

–

50 mA

RESPONSE CHARACTERISTICS

Power-On State

Power-On Time2,6

Settling Time3,6

Response Time6

Upper Corner Frequency

Lower Corner Frequency

OUTPUT CHARACTERISTICS

Output Rise Time4

Output Fall Time

Continued on next page.

POS t < tResponse

tPO

tSettling

tResponse

fCU

fCL

VCC > VCC(min)

fBdiff ≥ 100 Hz

Equal to tPO + tSettling; fBdiff ≥ 100 Hz

–3 dB, single pole

–3 dB, single pole

tr

RPU = 1 kΩ, COUTC2 = 10 pF

tf

RPU = 1 kΩ, ISINK = 20 mA, COUTC2 = 10 pF

– High –

V

–

4.5

9

ms

0

–

4.5

–

20

–

–

–

50 ms

59 ms

– kHz

20 Hz

–

–

200 ns

–

–

200 ns

A1421-DS

Allegro MicroSystems, Inc.

4

115 Northeast Cutoff, Box 15036

Worcester, Massachusetts 01615-0036 (508) 853-5000

www.allegromicro.com

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