MLX92213 Datasheet, PDF (6/11 Pages) Melexis Microelectronic Systems – MicroPower & Low-Voltage Hall Effect Latch with Enable

8 Magnetic Specifications
DC Operating Parameters: V_DD = 1.6V to 3.6V
Parameter
Symbol Test Conditions
Operating Point
Release Point
Hysteresis
BOP
BRP
BHYST
TA = 25°C
Operating Point
Release Point
BOP
BRP
TA = -40 to 85^oC
Hysteresis
BHYST
Table 5: Magnetic specifications
9 Application Section
9.1 Application Schematics
MLX92213
MicroPower & Low-Voltage
Hall Effect Latch with Enable
Min Typ Max Units
0.5
2
4
mT
-4
-2 -0.5
mT
1.5
4
7
mT
0.1
2
5
mT
-5
-2 -0.1
mT
1.5
4
7
mT
+1.8V / +3.3V
MCU
Interface
Input
C2
(optional)
VDD
EN
MLX92213
OUT
GND
C1
10nF
Fig.1 – Enhanced Power Management Typical
1.8V or 3.3V application with MCU interface reading
the OUT signal and driving the EN signal
Fig.2 – Standard Power Management
1.8V or 3.3V application with MCU interface
reading the OUT signal with default “Micropower”
9.2 Recommendation / Comments
A bypass capacitor C1 of 10nF is recommended to ensure supply voltage stability in application. It should be placed
between the VDD and GND pin, as close as possible to the MLX92213.
The MLX92213 provides a direct push-pull output, hence aiming to reduce external component count like output pull-up
resistor or capacitor. The use of the output capacitor C2 connected in parallel to the output is optional. If connected
between OUT and GND in such a push-pull configuration, the current sinked by the charge of the capacitor when the
output switches from “0” to “1” leads to an small increase of the average current consumption of the whole module (IC +
capacitor).
Using small capacitor value C2 (less than 50pF) would avoid having such small increase of the module average current
consumption.
For enhanced power management, the EN (Enable) signal can be driven by an external MCU. It basically allows
controlling the state IC and therefore its current consumption according the application requirements:
⊕ Standby mode for minimal current consumption (EN = “0”)
⊕ Default Micropower (EN = “1”)
⊕ Faster or slower sampling rate through EN signal
For more details on the different mode, please refer to the Principle of Operation section.
For application where standard power management is enough (default “Micropower” mode, Standby unused), the EN pin
should be tied to VDD
390109221302
Rev 003
Page 6 of 10
Data Sheet
Mar/12