ALLEGRO 3213 User Manual

查询3213供应商

Package Designator ‘LH’ Pinning

(SOT23W)

3

V

DD

12

SUPPLY

Pinning is shown viewed from branded side.

ABSOLUTE MAXIMUM RATINGS

at TA = +25°C

Supply Voltage, VDD .............................. 6 V

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

Output Off Voltage, V

Output Current, I

Junction Temperature, TJ ................ +170°C

Operating Temperature Range, TA

Suffix 'E' ...................... -40°C to +85°C

Suffix 'L' ................... -40°C to +150°C

Storage Temperature Range,

TS .............................. -65°C to +170°C

Caution: These CMOS devices have input
static protection (Class 3) but are still sus­ceptible to damage if exposed to extremely
high static electrical charges.

GROUND

OUT

........................... 1 mA

OUT

OUTPUT

Dwg. PH-016-1

...................... 6 V

3213

AND

3214

MICROPOWER, ULTRA-SENSITIVE

HALL-EF FECT SWITCHES

The A3213xx and A3214xx integrated circuits are ultra-sensitive, pole
in de pen dent Hall-effect switches with a latched digital output. They are
es pe cial ly suited for operation in battery-operated, hand-held equip ment such
as cellular and cordless tele phones, pagers, and palmtop com put ers. A 2.4 volt
to 5.5 volt operation and a unique clocking scheme reduce the average op er ­at ing power requirements – the A3213xx to 825 µW, the A3214xx to 14 µW
(typical at 2.75 V)! Except for operating duty cycle and average operating
current, the A3213xx and A3214xx are identical.

Unlike other Hall-effect switches, either a north or south pole of suf fi cient
strength will turn the output on; in the absence of a magnetic field, the output
is off. The polarity independence and minimal power requirement allows
these devices to easily replace reed switches for superior reliability and ease of
manufacturing, while eliminating the requirement for signal conditioning.

Improved stability is made possible through chopper stabilization (dy­ nam ic offset cancellation), which reduces the residual offset voltage normally
caused by device overmolding, temperature de pen den cies, and thermal stress.

These devices include on a single silicon chip a Hall-voltage generator,
small-signal amplifier, chopper sta bi li za tion, a latch, and a MOSFET output.
Advanced BiCMOS processing is used to take advantage of low-voltage and
low-power requirements, component matching, very low input-offset errors,
and small component geometries.

Range 'E' devices are rated for operation over a tem per a ture range of

-40°C to +85°C; range 'L' devices are rated for operation over a tem per a ture
range of -40°C to +150°C. Two package styles provide a mag net i cal ly op ti ­mized pack age for most ap pli ca tions. ‘LH’ is a min ia ture low-profile surface­mount package, ‘UA’ is a three-lead SIP for through-hole mounting. Each
package is available in a lead (Pb) free version (suffix, –T) , with a 100% matte
tin plated leadframe.

FEATURES

■ Micropower Operation

■ Operate With North or South Pole

■ 2.4 V to 5.5 V Battery Operation

■ Chopper Stabilized

Superior Temperature Stability
Extremely Low Switch-Point Drift
Insensitive to Physical Stress

■ ESD Protected to 5 kV

■ Sol id-State Reliability

■ Small Size

■ Easily Manufacturable With Magnet Pole Independence

Data Sheet

27622.62F

3213

AND

3214

MICROPOWER,
ULTRA-SENSITIVE
HALL-EFFECT SWITCHES

Product Selection Guide

Part Number Pb-free Packing* Mounting

A3213ELHLT –

A3213ELHLT-T Yes

A3213EUA –

A3213EUA-T Yes

A3213LLHLT –

A3213LLHLT-T Yes

A3213LUA –

A3213LUA-T Yes

A3214ELHLT –

A3214ELHLT-T Yes

A3214EUA –

A3214EUA-T Yes

A3214LLHLT –

A3214LLHLT-T Yes

A3214LUA –

A3214LUA-T Yes

*Contact Allegro for additional packing options.

7-in. reel

3000 pieces/reel

Bulk

500 pieces/bag

7-in. reel

3000 pieces/reel

Bulk

500 pieces/bag

7-in. reel

3000 pieces/reel

Bulk

500 pieces/bag

7-in. reel

3000 pieces/reel

Bulk

500 pieces/bag

Surface Mount

SIP through hole

Surface Mount

SIP through hole

Surface Mount

SIP through hole

Surface Mount

SIP through hole

Ambient, T

(ºC)

–40 to 85

–40 to 150

–40 to 85

–40 to 150

A

DC
(%)

25 460

0.10 11

I

DDAVG(TYP)

(µA)

2

115 Northeast Cutoff, Box 15036

Worcester, Massachusetts 01615-0036 [phone]

3213

AND

3214

MICROPOWER,
ULTRA-SENSITIVE
HALL-EFFECT SWITCHES

FUNCTIONAL BLOCK DIAGRAM

SUPPLY

SWITCH

X

TIMING

LOGIC

OUTPUT

& HOLD

DYNAMIC

SAMPLE

OFFSET CANCELLATION

800

700

600

500

400

300

200

100

ALLOWABLE PACKAGE POWER DISSIPATION in MILLIWATTS

0

PACKAGE
SUFFIX "LH"
R

θJA

= 228°C/W

20 60 100 140

40 80 120 180

PACKAGE
SUFFIX "UA"
R

θJA

= 165°C/W

TEMP.

CODE "E"

AMBIENT TEMPERATURE in °°°°C

TEMP.

CODE "L"

160

Dwg. GH-046-9

NOTE – Allowable package power dissipation will not be exceeded

unless Absolute Maximum Ratings (page 1) are exceeded.

LATCH

GROUND

Dwg. FH-020-5

Package Designator ‘UA’ Pinning

(SIP)

X

V

DD

1

SUPPLY

32

GROUND

Dwg. PH-016

OUTPUT

Pinning is shown viewed from branded side.

3

115 Northeast Cutoff, Box 15036
Worcester, Massachusetts 01615-0036 [phone]

Copyright © 2003 Allegro MicroSystems, Inc.

3213

AND

3214

MICROPOWER,

ULTRA-SENSITIVE

HALL-EFFECT SWITCHES

ELECTRICAL CHARACTERISTICS: unless otherwise noted
over operating voltage and temperature range.

Limits

Characteristic Symbol Test Conditions Min. Typ. Max. Units

Supply Voltage Range V

Output Leakage Current I

Output On Voltage V

Awake Time t

Period t

DD

OFF

OUT

awake

period

Operating

V

OUT

I

OUT

A3213xx – 240 360 µs

A3214xx – 60 90 ms

Duty Cycle d.c. A3213xx – 25 – %

A3214xx – 0.10 – %

Chopping Frequency f

Supply Current I

C

DD(EN)

I

DD(DIS)

I

DD(AVG)

Chip awake (enabled) – – 2.0 mA

Chip asleep (disabled) – – 8.0 µA

A3213xx – 460 850 µA

A3214xx – 11 22 µA

1)

= 5.5 V, B

RPN

< B < B

RPS

2.4 3.0 5.5 V

– <1.0 1.0 µA

= 1 mA, VDD = 3.0 V – 100 300 mV

–6090µs

– 340 – kHz

ESD, Human Body Model – Per CDF-AEC-Q100-002 5.0 – – kV

ESD, Machine Model – Per JESD22-A115 350 – – V

NOTES: 1. Operate and release points will vary with supply voltage.

= operate point (output turns ON); B

2. B

OPx

= release point (output turns OFF).

RPx

3. Typical Data is at TA = +25°C and VDD = 3.0 V and is for design information only.

MAGNETIC CHARACTERISTICS: over operating voltage and temperature range.

Limits

Characteristic Symbol Test Conditions Min. Typ. Max. Units

Operate Points B

Release Points B

Hysteresis B

OPS

B

OPN

RPS

B

RPN

hys

NOTES: 1. As used here, negative flux densities are defined as less than zero (algebraic convention) and -50 G is less than +10 G.

2. B

= operate point (output turns ON); B

OPx

3. Typical Data is at TA = +25°C and VDD = 3.0 V and is for design information only.

4. 1 gauss (G) is exactly equal to 0.1 millitesla (mT).

South pole to branded side – 42 70 G

North pole to branded side -70 -48 – G

South pole to branded side 10 32 – G

North pole to branded side – -38 -10 G

|B

- B

OPx

= release point (output turns OFF).

RPx

|–10–G

RPx

www.allegromicro.com

4