|
CYD3661 Micropower Hi-Sensitivity
Hall Effect Sensors |
 |
The CYD3661 is designed for
battery-operated, hand-held equipment such as cellular and cordless
phone, PDA and pagers application. The built-in dynamic offset
cancellation of pre-amplifier stage achieves optimal symmetrical
magnetic sensing. The supply voltage range is from 2.4V to 5.5V and
the max output current is 5mA。This Hall effect switch integrates a
sensor, pre-amplifier with dynamic offset cancellation and
differential hysteresis comparator in single chip.
APPLICATIONS
• Cover detector
• Battery-operated
• Hand-held equipment
FEATURES
• Micropower operation
• Extreme low power dissipation
• Built-in dynamic offset cancellation
• Thin SOT package
• ESD protected to 5KV
• High balance and low thermal drift magnetic sensing
• ROHS compliant
ABSOLUTE MAX. RATINGS (TA=25°C)
|
Parameter |
Symbol
|
Condition |
Value
|
Units
|
|
Supply
voltage |
VDD(MAX)
|
|
7
|
V
|
|
Allowable power dissipation |
Pd
|
|
300
|
mW
|
|
Storage temperature |
TS
|
|
-55～150
|
°C
|
|
Operating temperature |
Ta
|
|
-40～85
|
°C
|
|
Output
current |
Iout |
|
5
|
mA
|
ELECTRICAL CHARACTERISTICS TA=25℃，
VDD=2.75V
|
Parameter |
Symbol |
Test condition |
Value |
Units |
|
Min.
|
type |
max |
|
Supply
voltage |
VDD
|
|
2.4
|
- |
5.5
|
V
|
|
Output
sink voltage |
VDS |
Iout=1mA,
VDD=2.75V |
- |
0.1
|
0.25
|
V
|
|
Supply
current |
IAWK |
Awake,
VDD=2.75V |
- |
3
|
5
|
mA
|
|
ISLP |
Sleep,
VDD=2.75V |
|
2
|
4
|
μA
|
|
IAVG |
VDD=2.75V
|
|
2.75
|
5.25
|
μA
|
|
Awake
time |
TAWK
|
|
|
45
|
90
|
μS
|
|
Period
|
TP
|
|
|
180
|
360
|
mS
|
|
Duty
cycle |
|
|
|
0.025
|
|
%
|
Magnetic Characteristics TA=25C， VDD=2.75V
|
Parameter |
Symbol |
Test Condition |
Value |
Units |
|
Min.
|
type |
max |
|
Operation Point |
BOP
|
|
- |
±35
|
±70
|
GS
|
|
Release Point |
BRP
|
|
±10
|
±25
|
- |
GS
|
|
Hysteresis |
BH
|
|
|
10
|
8
|
GS
|
BLOCK DIAGRAM
MAGNETIC FLUX DENSITY IN GAUSS
APPLICATION CIRCUITS
AWAKE/SLEEP TIMING
PACKAGE (UNIT： mm)
