FD2H001BY
FD2H001BH
Low-Power Hall Switch
General Description
FD2H001B is a low-power integrated Hall switch designed to sense the applied magnetic flux
density and give a digital output, which indicates the present condition of the magnitude sensed. One
example of the applications is the on/off switch in cellular flip-phones.
The micro power design is especially suitable for battery-operated systems such as cellular phones
or laptop computers, in which power consumption is one major concern. The typical power consumption
of FD2H001B is below 10μW at 2.7V.
The magnetic switching points are precise and insensitive to process and temperature variations.
For FD2H001B, the output will be at the “low” level if the applied magnetic flux density(North pole) is
stronger than the switching threshold.
For detailed magnetic flux direction please refer to the figure.3
Features
Micro power consumption
2.4V to 5.5V battery operation
Chopper Amplifier based design:
Insensitive to noise and offset caused by process variations, operating temperatures and
mechanical stress
Digital output
Programmable output direction
CMOS process
Available in SOT23 / SIP3 package
This datasheet contains new product information. Feeling Technology reserves the rights to modify the product specification without notice.
No liability is assumed as a result of the use of this product. No rights under any patent accompany the sales of the product.
Website:
http://www.feeling-tech.com.tw
Rev. 0.61
1/11
FD2H001BY
FD2H001BH
Pin Descriptions
FD2H001BY/SOT23
VSS
3
Name
I/O
P
O
G
Positive supply
Open Drain output
Ground
Description
CG
1
2
VDD
Q
VSS
VDD
Q
Legend: I=input, O=output, I/O=input/output, P=power supply, G=ground
FD2H001BH/SIP3
FD01
1
2
3
Q
VDD VSS
This datasheet contains new product information. Feeling Technology reserves the rights to modify the product specification without notice.
No liability is assumed as a result of the use of this product. No rights under any patent accompany the sales of the product.
Website:
http://www.feeling-tech.com.tw
Rev. 0.60
2/11
FD2H001BY
FD2H001BH
Marking Information
CG
Lot Number
Year
Part Number Code
FD01
Internal ID
Per-Half Month
Year
Lot Number:
Wafer lot number’s last two digits
For Example: XX686
86
Year:
Production year’s last digit
Internal ID:
Internal Identification Code
Part Number Code:
Part number identification code for this product.
This datasheet contains new product information. Feeling Technology reserves the rights to modify the product specification without notice.
No liability is assumed as a result of the use of this product. No rights under any patent accompany the sales of the product.
Website:
http://www.feeling-tech.com.tw
Rev. 0.60
3/11
FD2H001BY
FD2H001BH
Block Diagram
Bias Generator
Q
Hall Plate
Chopper
Amplifier
Oscillator
Sequencer
Power on
reset
Hysteresis
Control
Figure.1
Functional Descriptions
Refer to the block diagram (Figure.1), FD2H001B is composed of the following building blocks:
Bias generator
The bias generator provides precise, temperature and process insensitive current sources for both
the Hall plate and the chopper amplifier. These current sources in turn guarantee proper operation of the
chip and precise switching thresholds under all kinds of environments specified in the specification.
Oscillator + Sequencer
The built-in oscillator provides the clock signal, which is taken by the sequencer to determine the
periods of the operating phase and the stand-by phase. Typically the operating time is about 60us and
the stand-by time is 150ms. Using such a clocking scheme, the average power consumption is almost
equal to that in the stand-by phase, which is under 10μW at 2.7V.
Power on Reset
Used to detect the power-up ramp and reset the digital circuits to attain correct operation as soon
as the power is ready.
Chopper Amplifier
To achieve a higher resolution the chopper amplifier structure is adopted in this design. Use of this
structure dynamically removes both the offset and flicker noise at the same time.
Hysteresis Control
This block determines the switching threshold of the Hall switch in different situations.
This datasheet contains new product information. Feeling Technology reserves the rights to modify the product specification without notice.
No liability is assumed as a result of the use of this product. No rights under any patent accompany the sales of the product.
Website:
http://www.feeling-tech.com.tw
Rev. 0.60
4/11
FD2H001BY
FD2H001BH
Ordering information
Part Number
FD2H001BYR-G1
FD2H001BH-G1
Operating Temperature
-20 C to +105 C
20 C to +105 C
o
o
o
o
Package
SOT23
SIP3
Description
±50G (B)
±50G (B)
MOQ
3,000ea / Reel
1,000ea / Bag
Absolute Maximum Ratings
Parameter
Ambient Operating Temperature
Storage Temperature
DC Supply Voltage
Supply Current
Magnetic Flux Density
Lead Temperature
Conditions
-
-
-
-
-
10sec
-
Values
min.
-40
-40
2.4
-
max.
85
150
5.5
2.5
unlimited
260
Unit
℃
℃
V
mA
Gauss
℃
IR Re-flow Soldering Curve
Figure. 2
This datasheet contains new product information. Feeling Technology reserves the rights to modify the product specification without notice.
No liability is assumed as a result of the use of this product. No rights under any patent accompany the sales of the product.
Website:
http://www.feeling-tech.com.tw
Rev. 0.60
5/11
stm32/stm8
京公网安备 11010802033920号
Copyright © 2005-2026 EEWORLD.com.cn, Inc. All rights reserved
电子工程世界
