Ultra-Low Power LRA Haptic Driver with Multiple Input Triggers and Software-Free Operation

R15DS0040EE0320 Rev.3.20

June 16, 2026

CFR0011-120-00

Page 21

10. Application Information

DA7283

GPI_0

GPI_1

GPI_2

VDDIO/EN

GND_2

VDD

GND_1

VDD

LRA

OUTN

OUTP

C1

100 nF

GND_3

GND_4

GND_5

Figure 14. External components diagram

NOTE

Drive the GPI pins and the VDDIO/EN pin from the same voltage level.

NOTE

Ground any unused GPI pins.

NOTE

Due to ultra-low power considerations, GPI pins are true high impedance inputs and have no internal pulldown resistors. It

is recommended to drive GPI pins either via a push-pull or open drain GPIO on the host side. In either case, the duration

of the triggering pulse must be longer than 25 µs. When using an open drain GPIO to trigger a haptic effect, the pullup

resistor must be selected to satisfy the 25 µs condition while considering PCB parasitic capacitance. A 10 kΩ resistor

would satisfy most use cases.

NOTE

Capacitor C1 should be placed as close as possible to, and between, VDD and GND_1 pins. It removes high-frequency

noise only; ensure additional decoupling (typ. 10 µF) is included elsewhere in the system.