Diodes AH1883 User Manual

AH1883

MICROPOWER, ULTRA-SENSITIVE HALL EFFECT SWITCH

Description

The AH1883 micropower Omnipolar Hall Effect switch IC is
designed for portable and battery powered equipment such
as cellular phones, cordless phones, camcorders, PDA’s, and
portable PC’s. Based on two high sensitivity Hall Effect plat es
and chopper stabilized architecture, the AH1883 provides
reliable solution over the whole operating range.

To support portable and battery powered equipment the
design has been optimized to operate from 1.65V to 3.3V and
consumes 13uW typical with a supply of 1.8V. To minimize
PCB space the AH1883 incudes a push-pull output structure,
therefore does not require an external pull up resistor, and is
packaged in small low profile SOT553 and U-DFN2020-3
packages.

Either North or South pole of sufficient strength will turn the
output on. When the magnetic flux density (B) is larger than
operate (Bop) the output is switched on. The output is turned
off when B becomes lower than the release point (Brp). The
output will remain off when there is no magnetic field.

Pin Assignments



NC

GND

NC

(Top View)

1

2

3

1. Vdd

SOT553

(Top View)

3. GND

2. OUT PU T

U-DFN2020-3

5

4

OUTPUT

Vdd

Features

• Micropower operation

• Operation with North or South Pole

• 1.65V to 3.3V battery operation

• Chopper stabilized

o Superior temperature stability
o Extremely Low Switch-Point Drift
o Insensitive to Physical Stress

• Good RF noise immunity

• -40°C to 85°C operating temperature

• ESD (HBM) ＞ 6kV in SOT553 and U-DFN2020-3

• Small low profile packages: SOT553 and U-DFN2020-3

• “Green” Molding Compound

Applications

• Cellular phone

• PDA

• Portable PCs – Netbook, Notebook, Tablets

• Camcorders

• Cordless phone

• Handheld game consoles

• Proximity detection and contact-less switch

applications

AH1883

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Typical Application Circuit

AH1883

MICROPOWER, ULTRA-SENSITIVE HALL EFFECT SWITCH

Vdd

AH1883

Output

GND

Pin Descriptions

Pin Name P/I/O Pin # Description

NC 1 No Connection

GND P/I 2 Ground

NC 3 No Connection

Vdd P/I 4 Power Supply Voltage

Output O 5 Output Pin ( active Low )

Functional Block Diagram

Vdd

Hall

Plate

Hall

Plate

AH1883

Document number: DS31296 Rev. 6 - 2

Sleep/Awake Logic

Cancellation

Offset

Amp

Cancellation

Offset

Amp

and Power Switch

Latch

Latch

Output

Driver

Controller

Output

GND

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AH1883

Absolute Maximum Ratings (T

Symbol Characteristics Values Unit

Vdd Supply voltage 5 V

B Magnetic flux density Unlimited

TS

PD

TJ

Notes: 1. Stresses greater than the 'Absolute Maximum Ratings' specified above, may cause permanent damage to the device. These are stress ratings only;
functional operation of the device at these or any other conditions exceeding those indicated in this specification is not implied. Device reliability
may be affected by exposure to absolute maximum rating conditions for extended periods of time

Storage Temperature Range -65 to +150 °C
Package Power Dissipation 230 mW
Maximum Junction Temperature 150 °C

MICROPOWER, ULTRA-SENSITIVE HALL EFFECT SWITCH

= 25°C, Note 1)

A

Recommended Operating Conditions (T

= 25°C)

A

Symbol Parameter Conditions Rating Unit

Vdd Supply Voltage Operating 1.65 to 3.3 V

TA

Operating Temperature Range Operating -40 to +85 °C

Electrical Characteristics (TA = 25°C, Vdd = 1.8V, unless otherwise specified)

Symbol Characteristic Conditions Min Typ. Max Unit

VOH
VOL

Idd(en)

Idd(dis) Chip disable - 5 8 uA
Idd(avg) average supply current - 7 12 uA
Tawake Awake Time - 50 100 µs

Tperiod Period - 50 100 ms

D.C. Duty Cycle - 0.1 - %

Output On Voltage (High side)
Output On Voltage (Low side)

Supply Current

IO= -0.5mA
IO= 0.5mA
Chip enable - 2 4 mA

Vdd-0.2 - - V

- - 0.2 V

AH1883

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AH1883

Magnetic Characteristics (T

Symbol Characteristic Min Typ. Max Unit

Bops(south pole to brand side)
Bopn(north pole to brand side) -55 -37 ­Brps(south pole to brand side)
Brpn(north pole to brand side) - -29 -6
Bhy(|Bopx|-|Brpx|) Hysteresis 3 8 -

Notes: 2. Typical data is at TA = 25°C, Vdd = 3V, and for design information only.

3. The magnetic characteristics may vary with supply voltage, operating temperature and after soldering.

MICROPOWER, ULTRA-SENSITIVE HALL EFFECT SWITCH

= 25°C, Vdd = 1.8V~3.0V, Note 2 & 3)

A

(1mT=10 Gauss)

Operate Point

Release Point

- 37 55

6 29 -

Gauss

Output

)

dd

B

opn

( off-state )

hy

B

rpn

B

Turn off

V

0

sat

Voltage

Output
(

V

Turn on

( on-state )

( Magnetic flux density B )

Output

)

( off-state )

Voltage

Turn off

Output
(

V

sat

0

B

rps

B

hy

B

( Magnetic flux density B )

V

dd

Turn on

( on-state )

ops

AH1883

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MICROPOWER, ULTRA-SENSITIVE HALL EFFECT SWITCH

Typical Operating Characteristics

AH1883

AH1883 Switch points vs. Temperature (Vdd = 1.8V)
50
40
30
20
10

0

-10

Gauss(G)

-20

-30

-40

-50

-40 -15 10 35 60 85
Temperature (℃)

Idd (avg.)

unit: μA

9
8
7
6
5
4
3
2
1
0

-40 -15 10 35 60 85

AH1883 Idd(avg.) vs. Temperature

Temperature (℃)

Bops
Brps
Bopn
Brpn
Bhy_s
Bhy_n

1.65V

1.8V

3.3V

AH1883 Switch points vs. Vdd (TA =25 ℃)

50
40
30
20
10

0

Gauss(G)

-10

-20

-30

-40

-50

1.65 1.9 2.15 2.4 2.65 2.9 3.15 3.4 3.65 3.9
Vdd(V)

Idd (avg.)

unit: μA

10

9
8
7
6
5
4
3
2
1
0

1.65 1.9 2.15 2.4 2.65 2.9 3.15 3.4 3.65 3.9

A H1883 Idd(avg .) vs. Vd d (TA=25 ºC)

Vdd(V)

Bops
Brps
Bopn
Brpn
Bhy_s
Bhy_n

AH1883

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XX

Performance Characteristics

For SOT553 and U-DFN2020-3

TA (°C)

PD (mW)

25 50 60 70 80 85 90 100 110 120 130 140 150

230 184 166 147 129 120 110 92 74 55 37 18 0

P

(mW )

D

300

200

100

0

0 2 5 50 75 100 125 150

AH1883

MICROPOWER, ULTRA-SENSITIVE HALL EFFECT SWITCH

Power Dissipation Curve

85-40

TA (oC)

Ordering Information

Device

AH1883-ZG-7 Z SOT553 3000/Tape & Reel -7
AH1883-FJG-7 FJ U-DFN2020-3 3000/Tape & Reel -7

Notes: 4. EU Directive 2002/95/EC (RoHS). All applicable RoHS exemptions applied. Please visit our website at

http://www.diodes.com/products/lead_free.html.

5. Pad layout as shown on Diodes Inc. suggested pad layout document AP02001, which can be found on our website at
http://www.diodes.com/datasheets/ap02001.pdf.



Package

Z : SOT553

FJ :

Package

Code

AH 1883 -

U-DFN2020-3

Packaging

(Note 4 & 5)

G -7

Green

G : Green

Quantity Part Number Suffix

Packing

7 : Tape & Reel

7” Tape and Reel

AH1883

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Marking Information

(1) SOT553

(2) U-DFN2020-3

AH1883

MICROPOWER, ULTRA-SENSITIVE HALL EFFECT SWITCH

( Top View )

XX

: Identification Code

Y : Year : 0~9

W

XX Y W X

Part Number Package Identification Code

AH1883 SOT553 KP

: Week : A~Z : 1~26 week;

a~z : 27~52 week;

z represents 52 and 53 week

: Internal code

X

( Top View )

Pin 1 indicator

: Identification C ode

XX

Y

WX

XX

Y : Year : 0~9

W

: Week : A~Z : 1~26 week;

a~z : 27~52 week;

z represents 52 and 53 week

X : In ternal cod e

Part Number Package Identification Code

AH1883 U-DFN2020-3 KP

AH1883

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A

A

MICROPOWER, ULTRA-SENSITIVE HALL EFFECT SWITCH

Package Outline Dimensions (All Dimensions in mm)

(1) Package Type: SOT553

E1

D

e1

e

E

L

b (5 places)

a

A

c

(2) Package Type: U-DFN2020-3

A

A3

SEATING PLANE

Pin#1 ID

A1

D

D2

E

E2

e

L

L

b

SOT553

Dim Min Max Typ

0.55 0.60 0.60

c

0.10 0.18 0.15

D

1.50 1.70 1.60

E

1.55 1.70 1.60

E1

1.10 1.25 1.20

L

0.10 0.30 0.20

b

0.15 0.30 0.20

e

e1

a

0.50 Typ

1.00 Typ

6°

8° 7°

ll Dimensions in mm

U-DFN2020-3

Dim Min Max Typ

A 0.57 0.63 0.60

A1 0 0.05 0.02
A3

⎯ ⎯

b 0.20 0.30 0.25
D 1.95 2.075 2.00

D2 1.10 1.30 1.20

e

⎯ ⎯

E 1.95 2.075 2.00

E2 0.80 1.00 0.90

L 0.35 0.45 0.40

All Dimensions in mm

0.152

0.50

AH1883

AH1883

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Taping Orientation (Note 6)

For U-DFN2020-3

AH1883

MICROPOWER, ULTRA-SENSITIVE HALL EFFECT SWITCH

Notes: 6. The taping orientation of the other package type can be found on our website at http://www.diodes.com/datasheets/ap02007.pdf.

AH1883

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AH1883

MICROPOWER, ULTRA-SENSITIVE HALL EFFECT SWITCH

IMPORTANT NO TICE

DIODES INCORPORATED MAKES NO WARRANTY OF ANY KIND, EXPRESS OR IMPLIED, WITH REGARDS TO THIS
DOCUMENT, INCLUDING, BUT NOT LIMITED TO, THE IMPLIED WARRANTIE S OF MERCHANTABILITY AND FITNESS FOR A
PARTICULAR PURPOSE (AND THEIR EQUIVALENTS UNDER THE LAWS OF ANY JURISDICTION).

Diodes Incorporated and its subsidiaries reserve the right to make modifications, enhancements, improvements, corrections or other
changes without further notice to this document and any product described herein. Diodes Incorporated does not assume any liability
arising out of the application or use of this document or any product described herein; neither does Diodes Incorporated convey any
license under its patent or trademark rights, nor the rights of others. Any Customer or user of this document or products described
herein in such applications shall assume all risks of such use and will agree to hold Diodes Incorporated and all the companies
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Diodes Incorporated does not warrant or accept any liability whatsoever in respect of any products purchased through unauthorized
sales channel.
Should Customers purchase or use Diodes Incorporated products for any unintended or unauthorized application, Customers shall
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Products described herein may be covered by one or more United States, international or foreign patents pending. Product names
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LIFE SUPPORT

Diodes Incorporated products are specifically not authorized for use as critical components in life support devices or systems without
the express written approval of the Chief Executive Officer of Diodes Incorporated. As used herein:

A. Life support devices or systems are devices or systems which:

1. are intended to implant into the body, or

2. support or sustain life and whose failure to perform when properly used in accordance with instructions for use provided
in the labeling can be reasonably expected to result in significant injury to the user.

B. A critical component is any component in a life support device or system whose failure to perform can be reasonably expected

to cause the failure of the life support device or to affect its safety or effectiveness.

Customers represent that they have all necessary expertise in the safety and regulatory ramifications of their life support devices or
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concerning their products and any use of Diodes Incorporated products in such safety-critical, life support devices or systems,
notwithstanding any devices- or systems-related information or support that may be provided by Diodes Incorporated. Further,
Customers must fully indemnify Diodes Incorporated and its representatives against any damages arising out of the use of Diodes
Incorporated products in such safety-critical, life support devices or systems.

Copyright © 2011, Diodes Incorporated

www.diodes.com

AH1883

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