MX887P
IXYS
Pin Description
Pin No. Pin Name Description
1 VSUPPLY 2.5 to 5.5 Volt
2 OUT CMOS Push-Pull
3 GROUND Ground
Circuit Description
The MX887P µPower Hall-Effect Switch consists of a Hall element, small signal amplifier, latch, and
CMOS push-pull driver. Offset cancellation rejects errors in signal stages and the influence of mechanical
stress on the Hall element. This technique together with a precision threshold generator and comparator
produce highly accurate magnetic switch points. The Hall element is activated for a small fraction of an
operating cycle, then latched in that sample state for the remainder of the period. By using this technique,
very low power consumption is achieved.
Electrical Characteristics
Over operating voltage and temperature range unless otherwise noted.
Parameter Condition Min Typ Max Unit
Supply Voltage 2.5 5.5 V
Output Leakage Current VOUT = 5.5V, BRPN < B < BRPS <1.0 1.0 µA
Output On Voltage IOUT = 1mA, VDD = 3.0V 100 300 mV
Awake Time
90 µS
Period
90 mS
Duty Cycle 0.1 %
Awake (enabled) 2.0 mA
Asleep (disabled) 8.0 µA
Supply Current
Average (Calculated) 5 15 µA
ESD Human Body Model 2 kV
Notes: 1. Operating and release points will vary with supply voltage.
2. B
OPX = operating point (output turns ON); BRPX = release point (output turns OFF).
3. Typical Data is at T
A = 25°C and VSUPPLY = 3.0V.
Magnetic Characteristics
Over operating voltage and temperature range unless otherwise noted.
Parameter Symbol Condition Min Typ Max Unit
BOPS
South pole to branded side
60 G
Operating Points
B
OPN
North pole to branded side
-60
G
BRPS
South pole to branded side
6
G
Release Points
B
RPN
North pole to branded side
-6
G
Hysteresis BHYS | BOPX – BRPX | 5 G
Notes: 1. As use here, negative flux densities are defined as less than zero (algebraic convention) and -50G is less than +10G.
2. B
OPX = operating point (output turns ON); BRPX = release point (output turns OFF).
3. Typical Data is at T
A = 25°C and VSUPPLY = 3.0V.
MX887P 2 7/19/07
Drawing No. 088709 www.claremicronix.com
