Rainbow-electronics MAX9621 Manual do Utilizador descarregar pdf (Página 8)

Dual, 2-Wire Hall-Effect Sensor Interface with

Analog and Digital Outputs

MAX9621

Pin Description

Pin Configuration

PIN NAME FUNCTION

1 BAT

Battery Power Supply. Connect to the positive supply through an external reverse-polarity diode.

Bypassed to GND with a 0.1FF capacitor.

2 ISET

Current Setting Input. Place a 1% resistor (R

SET

) between BAT and ISET to set the desired input current

threshold range for the DOUT_ outputs. See the Typical Operating Characteristics section for the correct

value of R

SET

for the desired range. Make no other connections to this pin. All routing must have low

parasitic capacitance. See the Input Current Thresholds and Short to Ground section.

3 IN1

Hall-Effect Sensor Input 1. Supplies current to the Hall sensor and monitors the current level drawn to

determine the high/low state of the sensor. Bypass to GND with a 0.01FF capacitor. Connect an unused

input to BAT pin.

4 IN2

Hall-Effect Sensor Input 2. Supplies current to the Hall sensor and monitors the current level drawn to

determine the high/low state of the sensor. Bypass to GND with a 0.01FF capacitor. Connect an unused

input to BAT pin.

5 GND Ground

BAT SLEEP

AOUT1

DOUT1

AOUT2

DOUT2

IN2

GND

ISET

IN1

µMAX

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MAX9621

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Rainbow-electronics MAX9621 Manual do Utilizador Página 8