A3425LKTN-T datasheet, PDF - EEWORLD Datasheet

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A3425LKTN-T: DescriptionAnalog Circuit, 2 Func, BIPolar, PSIP4, LEAD FREE, PLASTIC, SIP-4; CategoryAnalog mixed-signal IC The signal circuit; File Size570KB，21 Pages; ManufacturerAllegro; Websitehttp://www.allegromicro.com/; Environmental Compliance

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A3425LKTN-T Overview

Analog Circuit, 2 Func, BIPolar, PSIP4, LEAD FREE, PLASTIC, SIP-4

A3425LKTN-T Parametric

Parameter Name	Attribute value
Is it Rohs certified?	conform to
Maker	Allegro
Parts packaging code	SIP
package instruction	LEAD FREE, PLASTIC, SIP-4
Contacts	4
Reach Compliance Code	unknown
Analog Integrated Circuits - Other Types	ANALOG CIRCUIT
JESD-30 code	R-PSIP-T4
JESD-609 code	e3
length	5.22 mm
Number of functions	2
Number of terminals	4
Maximum operating temperature	150 °C
Minimum operating temperature	-40 °C
Package body material	PLASTIC/EPOXY
encapsulated code	ZIP
Package shape	RECTANGULAR
Package form	IN-LINE
Peak Reflow Temperature (Celsius)	260
Certification status	Not Qualified
Maximum seat height	5.67 mm
Maximum supply voltage (Vsup)	18 V
Minimum supply voltage (Vsup)	3.3 V
Nominal supply voltage (Vsup)	12 V
surface mount	NO
technology	BIPOLAR
Temperature level	AUTOMOTIVE
Terminal surface	Matte Tin (Sn)
Terminal form	THROUGH-HOLE
Terminal pitch	1.27 mm
Terminal location	SINGLE
Maximum time at peak reflow temperature	NOT SPECIFIED
width	1.55 mm
Base Number Matches	1

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A3425

Ultra-Sensitive Dual-Channel Quadrature Hall-Effect Bipolar Switch

The A3425 is a dual-output channel, bipolar switch with two separate Hall-effect

sensor circuits, each providing a separate digital output for speed and direction

signal processing capability. Each sensor circuit has its own independent Hall

element, which are photolithographically aligned to better than 1 µm. Maintaining

accurate mechanical location between the two active Hall elements eliminates the

major manufacturing hurdle encountered in

ﬁ

ne-pitch detection applications. The

A3425 is a highly sensitive, temperature-stable magnetic sensing device, which

is ideal for use in ring magnet-based speed and direction systems used in harsh

automotive and industrial environments.

The A3425 monolithic integrated circuit contains two independent Hall effect

switches, located approximately 1 mm apart. The digital outputs are 90º out of

phase so that the outputs are in quadrature with the proper ring magnet design.

This allows for easy processing of speed and direction signals. Extremely low-

drift ampliﬁers guarantee symmetry between the switches to maintain signal

quadrature. The patented chopper stabilization technique cancels offsets in

each channel, and provides stable operation over the operating temperature and

voltage ranges. An on-chip regulator allows the use of this device over a wide

operating voltage range. Post-assembly factory programming provides sensitive

switchpoints that are symmetrical between the two switches.

The A3425 is available in a plastic 8-pin SOIC surface mount package and a plas-

tic 4-pin SIP, both in two temperature ranges. Each package is available in a lead

(Pb) free version with 100% matte tin plated leadframe.

Package L, 8-pin SOIC

VCC

OUTPUTA

OUTPUTB

GND

No connection

Package K, 4-pin SIP

1. VCC

2. OUTPUTA

3. OUTPUTB

4. GND

ABSOLUTE MAXIMUM RATINGS

Supply Voltage, V

.......................................

26.5 V

Reverse-Battery Voltage, V

RCC

........................

–18 V

Output Off Voltage, V

OUTPUT

..............................V

Output Sink Current, I

OUTPUT(SINK)

Internally Limited

Magnetic Flux Density, B ..........................

Unlimited

Operating Temperature

Ambient, T

, Range E..................

–40ºC to 85ºC

Range L................

–40ºC to 150ºC

Maximum Junction, T

J(max)

........................165ºC

Storage Temperature, T

..................

–65ºC to 170ºC

Features and Beneﬁts

•

Two matched Hall effect switches on a single substrate

•

Sensor element spacing approximately 1 mm

Superior temperature stability

3.3 V to 18 V operation

Integrated ESD diode from OUTPUT and VCC pins to GND

High-sensitivity switchpoints

Robust structure for EMC protection

Solid-state reliability

A3425DS-Rev. !

Allegro MicroSystems, Inc.

115 Northeast Cutoff, Box 15036

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

www.allegromicro.com

A3425LKTN-T Related Products

	A3425LKTN-T	A3425LLTR	A3425LKTN
Description	Analog Circuit, 2 Func, BIPolar, PSIP4, LEAD FREE, PLASTIC, SIP-4	Analog Circuit, 2 Func, BIPolar, PDSO8, PLASTIC, MS-012AA, SOIC-8	Analog Circuit, 2 Func, BIPolar, PSIP4, PLASTIC, SIP-4
Is it Rohs certified?	conform to	incompatible	incompatible
Maker	Allegro	Allegro	Allegro
Parts packaging code	SIP	SOIC	SIP
package instruction	LEAD FREE, PLASTIC, SIP-4	SOP,	SIP,
Contacts	4	8	4
Reach Compliance Code	unknown	compliant	compliant
Analog Integrated Circuits - Other Types	ANALOG CIRCUIT	ANALOG CIRCUIT	ANALOG CIRCUIT
JESD-30 code	R-PSIP-T4	R-PDSO-G8	R-PSIP-T4
JESD-609 code	e3	e0	e0
length	5.22 mm	4.9 mm	5.22 mm
Number of functions	2	2	2
Number of terminals	4	8	4
Maximum operating temperature	150 °C	150 °C	150 °C
Minimum operating temperature	-40 °C	-40 °C	-40 °C
Package body material	PLASTIC/EPOXY	PLASTIC/EPOXY	PLASTIC/EPOXY
encapsulated code	ZIP	SOP	SIP
Package shape	RECTANGULAR	RECTANGULAR	RECTANGULAR
Package form	IN-LINE	SMALL OUTLINE	IN-LINE
Peak Reflow Temperature (Celsius)	260	240	240
Certification status	Not Qualified	Not Qualified	Not Qualified
Maximum seat height	5.67 mm	1.75 mm	5.67 mm
Maximum supply voltage (Vsup)	18 V	18 V	18 V
Minimum supply voltage (Vsup)	3.3 V	3.3 V	3.3 V
Nominal supply voltage (Vsup)	12 V	12 V	12 V
surface mount	NO	YES	NO
technology	BIPOLAR	BIPOLAR	BIPOLAR
Temperature level	AUTOMOTIVE	AUTOMOTIVE	AUTOMOTIVE
Terminal surface	Matte Tin (Sn)	Tin/Lead (Sn/Pb)	Tin/Lead (Sn/Pb)
Terminal form	THROUGH-HOLE	GULL WING	THROUGH-HOLE
Terminal pitch	1.27 mm	1.27 mm	1.27 mm
Terminal location	SINGLE	DUAL	SINGLE
Maximum time at peak reflow temperature	NOT SPECIFIED	30	NOT SPECIFIED
width	1.55 mm	3.9 mm	1.55 mm
Base Number Matches	1	1	1

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