Dual, 2-Wire Hall-Effect Sensor Interface with

Analog and Digital Outputs

8

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

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

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

TOP VIEW

+

MAX9621

1

4

5

2

3

10

9

8

7

6