Diodes AH342 User Manual

A

Pb

ACTIVE HIGH/LOW COMPLEMENTARY OUTPUT HALL-EFFECT LATCH

Description

The AH342 is a bipolar latching hall IC with a pair of complementary

push/pull outputs. A dual hall element is used to offset stress induced

noise and drift. The robust outputs are capable of sourcing up to

7.4mA and sinking up to 4.4mA. The device contains inherent reverse

polarity protection up to the full power supply range.

Features

• Digital dual complementary sink/source outputs

• Reverse Voltage Polarity protection for full supply range

• High output current capability

• Low profile packages: SIP-4L

ADVANCED INFORMATION

• Lead Free Package: SIP-4L

• Lead-Free Finish; RoHS Compliant (Notes 1 & 2)

Notes: 1. EU Directive 2002/95/EC (RoHS) & 2011/65/EU (RoHS 2) compliant. All applicable RoHS exemptions applied.

2. See http://www.diodes.com/quality/lead_free.html for more information about Diodes Incorporated’s definitions of Halogen- and Antimony-free, "Green"
and Lead-free.

Pin Assignments

( Top View )

342

12 43

SIP-4L

Applications

• Conveyors

• Motor Control

• Power Sensing

• Linear or Rotary Motion Detection

• RPM Sensing

1 : Vcc

2 : DO

3 : DOB

4 : Vss

H342

Pin Descriptions

Pin Name P/I/O Pin # Description

VCC

DO O 2 Output Pin

DOB O 3 Output Pin

Vss P 4 Ground

P 1 Power Supply Input

AH342

Document number: DS30886 Rev. 4 - 2

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Functional Block Diagram

H342

OUTPUT AMP

7.5V

SOURCE

660

510

SINK

ADVANCED INFORMATION

Voltage

Regulator

Output

Amp

#1

Output

Hall

Sensor

Amp

and

Trigger

Interface

Circuit

Amp

#2

Absolute Maximum Ratings (@T

Symbol Parameter Rating Unit

VCC

V

out

Ic Output Current ±10 mA

B Magnetic Flux Density Unlimited Gauss

TST

Note: 3. Absolute maximum ratings are the extreme limits that the device will withstand without damage to the device. However, the electrical and
magnetic characteristics are not guaranteed as the maximum limits (above recommended operating conditions) are approached nor will the
device necessarily operate at absolute maximum rating.

Supply Voltage ±28 V

Voltage Externally Applied to Output -1.2 to +5 V

Storage Temperature Range -40to +150 °C

Recommended Operating Conditions (@T

Symbol Characteristic Conditions Min Max Unit

VCC

TA

Note: 4. Shall not exceed PD and Safety Operation Area.

AH342

Document number: DS30886 Rev. 4 - 2

Supply Voltage Operating 4.5 28 V

Operating Ambient Temperature (Note 4) Operating -40 +125 °C

= +25°C, unless otherwise specified.) (Note 3)

A

= +25°C, unless otherwise specified.)

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IO

IO

1

2

I

O

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Electrical Characteristics (@T

Symbol Characteristic Conditions

ICC

utput Voltage

V

OUT

I

Leak(sink)

utput Current

I

OUT

utput Switching Time

tf Fall Time 90% to 10%; no load 28V±0.5% Supply - - - - - 1.0

tr Rise Time 10% to 90%; no load 28V±0.5% Supply - - - - - 1.0

ADVANCED INFORMATION

Supply Current 28V±0.5% supply 4 4.5 6 3 4.5 7 mA

#1 Sourcing

#2 Sinking 0 0.1 0.2 - - -

#1 Sinking 0 0.1 0.2 - - -

#2 Sourcing 6.0 7.0 7.5 - - -

Leakage (sink)

#1 Sourcing Apply 2V to output and measure current.

#2 Sinking 2.8 3.4 4.7 2.4 3.4 5.0

#1 Sinking 2.8 3.4 4.7 2.4 3.4 5.0

#2 Sourcing 5.5 7.4 8.0 5.0 7.4 8.5

= +25°C, unless otherwise specified.) (Note5,6)

A

Switch magnetically operated:
No load 28V±0.5% supply.
Switch magnetically released:
No load 28V±0.5% supply.

Apply voltage 0.2V greater than
measured output source voltage measure
current, no load 28V±0.5% supply.

Switch magnetically operated, no load
28V±0.5%.

Apply 2V to output and measure current.
Switch magnetically released, no load
28V±0.5%.

24°C ± 2°C -40°C to +125°C

Min Typ Max Min Typ Max

6.0 7.0 7.5 - - -

- - 1.0 - - 1.0 µA

5.5 7.4 8.0 5.0 7.4 8.5

Magnetic Characteristics

( 1mT = 10 Gauss )

24°C ± 2°C

V

Symbol Characteristic

Bop Operate Point 40 120 30 150 Gauss

Brp Release Point -120 -40 -150 -30 Gauss

Bhy Hysteresis 120 200 120 200 Gauss

Notes: 5. All the parameters are tested under the 25oC only. The operation temperature (-40oC to 125oC) is guaranteed by design, it is typical value.

6. The magnetic field strength (gauss) required to cause the switch to change state (operate and release) will be as specified in the magnetic
characteristics. To test the switch against the specified magnetic characteristics the switch must be placed in a uniform magnetic field.

= 12VDC ± 0.5%VDC

S

Min Max Min Max

-40°C to +125°C

VS = 4.5VDC to 28VDC

H342

Units

V

mA

µs

Unit

Output Voltage in Volts

AH342

Document number: DS30886 Rev. 4 - 2

DOB

DO

Bhy Turn onTurn offBhy Turn offTurn on

Output Voltage in Volts

V

SAT

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V

SAT

BopBop BrpBrp

00

Magnetic Flux Density in GaussMagnetic Flux Density in Gauss

December 2013

© Diodes Incorporated