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AK8772

Monolithic Hall Effect ICs

Asahi Kasei Microdevices 

Monolithic Hall Effect ICs AK-series

AK8772

Shipped in packet-tape reel(5000pcs/Reel)

AK8772 is ultra-small Hall effect IC of a single silicon chip composed of Hall element and a signal processing IC.

Bipolar Hall

Effect Latch

Supply Voltage

1.6〜5.5Ｖ

Power down

Function

Ultra High

Sensitivity

Bop：1.8mT

Output

CMOS

Notice:It is requested to read and accept "IMPORTANT NOTICE" written on the back of the front cover of this catalogue.

●Features

・Precision Bipolar Hall Effect Latch

・Power manageability through "PDN" pin

 Current consumption in Power down mode is less than 1μA

・Low current consumption at active mode : less than avg.

 150μA@VDD=3V

・Ultra small SON package : 1.1×1.4×t0.37mm, Halogen free

●Operational Characteristics

SON

Package top

S or N

Vout

H

VoH

N or S

Package bottom

Bh

L

VOL

S

Brp

0

N

Bop

Magnetic flux density

●Functional Block Diagram

1：VDD

3：PDN

Switch

4：OUT

OSC

&

Hall Chopper

Element SW

AMP

Timing Logic

Schmitt

Trigger

&

Latch

Latch Output

Logic Stage

2：VSS

Item

Function

OSC

Generates operating clock

Timing logic Generates timing signal requires for Chopper SW, AMP

and COMP

Hall Element Hall element fabricated by CMOS process

Chopper SW Performs chopping in order to cancel the offset voltage

 

of Hall sensor

AMP

Reduce offset voltage and amplifies Hall output voltage

Schmitt Trigger Hysteresis comparator

Output Stage CMOS output, During the power down mode, output

is latched in its previous state

19

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