A1227 데이터 시트보기 (PDF) - Allegro MicroSystems

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A1227

Hall Effect Latch for High Temperature Operation

Allegro MicroSystems 

A1225, A1227

and A1229

Hall Effect Latch for High Temperature Operation

ELECTRICAL CHARACTERISTICS Valid at TA = –40°C to 150°C, CBYPASS = 0.1 μF, VCC = 12 V; unless otherwise noted

Characteristics

Symbol

Test Conditions

Min.

Typ.1

Max.

Electrical Characteristics

Supply Voltage

Supply Current

Supply Zener Voltage

Reverse Battery Current

Power-On Time3

Power-On State

Chopping Frequency

Output Stage Characteristics

VCC

ICC

VZ(sup)

IZ(sup)

tPO

POS

fchop

Operating; TJ ≤ 165°C

B < BRP (Output off)

B > BOP (Output on)

ICC = 9 mA, TA = 25°C

VRCC = –28 V, TA = 25°C

B < BOP

3.8

24

–

–

6

–

–

6

28

–

–

–5

–

–

–

–

12

–

HIGH

–

–

400

–

Output Saturation Voltage

Output Leakage Current

Output Rise Time3,4

Output Fall Time3,4

Output Zener Voltage

Magnetic Characteristics

VOUT(sat)

IOFF

tr

tf

VZ(out)

IOUT = 20 mA

VOUT = 24 V, B < BRP

RL= 820 Ω, CL= 20 pF

RL= 820 Ω, CL= 20 pF

IOUT = 3 mA, TA = 25°C

–

175

400

–

<1

10

–

200

2000

–

200

2000

30

–

–

A1225 TA = 25°C

Over operating temperature range

170

–

270

140

–

300

Operate Point

BOP

A1227 TA = 25°C

Over operating temperature range

50

–

150

50

–

175

A1229 TA = 25°C

Over operating temperature range

100

–

180

80

–

200

A1225 TA = 25°C

Over operating temperature range

–270

–

–300

–

–170

–140

Release Point

BRP

A1227 TA = 25°C

Over operating temperature range

–150

–

–175

–

–50

–50

A1229 TA = 25°C

Over operating temperature range

–180

–

–200

–

–100

–80

A1225 TA = 25°C

Over operating temperature range

340

–

540

280

–

600

Hysteresis (BOP – BRP)

BHYS

A1227 TA = 25°C

Over operating temperature range

100

300

100

–

350

A1229 TA = 25°C

Over operating temperature range

200

–

360

160

–

400

1Typical data are at TA = 25°C and VCC = 12 V, and are for design estimations only.

21 G (gauss) = 0.1 mT (millitesla).

3Minimum and maximum specifications verified by bench characterization and not guaranteed by Allegro final test.

4CL = oscilloscope probe capacitance.

Unit2

V

mA

mA

V

mA

μs

–

kHz

mV

μA

ns

ns

V

G

G

G

G

G

G

G

G

G

G

G

G

G

G

G

G

G

G

Allegro MicroSystems, Inc.

3

115 Northeast Cutoff

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

1.508.853.5000; www.allegromicro.com

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