Jinlong Machinery & Electronics

Coin Linear Resonant Actuator LRA - picture 1

Coin Linear Vibration Motors (LRA’s)

Coin Linear Resonant Actuator LRA - for haptic feedback
We manufacture both rectangular and coin type LRA’s.  This section only discusses coin type LRA’s.
Due to their fast rise and fall times and superior braking ability, linear resonant actuators (LRA) vibration motors are an excellent choice for haptic feedback applications. Their relatively simple internal construction also offers high reliability and exceptionally long life when compared with brushed ERM motors. Our coin shaped linear resonant actuators oscillate along the Z axis, perpendicular to the motors surface. This Z axis vibration efficiently transmits vibrations in wearable applications. In Hi-Rel applications, they are a viable alternative to brushless vibration motors as the only internal parts that are subjected to wear / failure are the springs.
Scroll Table To See All Content


Part Number

Download PDF
Image

motor logo
Tech.
Type
Config. Type Motor Size Voltage Current Res.
Freq
(hz)
Rated speed (rpm) Vibe Force (G)
Dia (mm) Thickness (mm) Rated (VDC) Operating (VDC) Rated (ma) MAX Typical* (ma) Avg.
G0825001D G0825001D Coin Vibration Motor LRA 1 8.0 2.5 1.2 0.1~1.9 60 48 240 - 0.75
G1040003D G1040003D Coin Vibration Motor LRA 3 10.0 4.0 2.5 0.1 ~ 2.5 170 145 170 - 2.00
G1040001D G1040001D Coin Vibration Motor LRA 3 10.0 4.0 2.0 0.1 ~ 2.0 170 145 170 - 1.50
G1036002D G1036002D Coin Vibration Motor LRA 1 10.0 3.6 2.0 0.1 ~ 2.05 90 68 175 - 1.50
G1036001D G1036001D Coin Vibration Motor LRA 1 10.0 3.6 2.0 0.1 ~ 2.05 90 68 175 - 1.50
G0832022D G0832022D Coin Vibration Motor LRA 1 8.0 3.2 2.0 0.1 ~ 1.8 90 68 235 - 1.50
G0832013D G0832013D Coin Vibration Motor LRA 1 8.0 3.2 2.0 0.1 ~ 1.8 90 68 235 - 1.50
G0832012 G0832012 Coin Vibration Motor LRA 1 8.0 3.2 1.8 0.1~1.8 80 58 235 - 1.40
G0832008 G0832008 Coin Vibration Motor LRA 4 8.0 3.2 1.8 0.1~1.8 80 58 235 - 1.40
G0832006 G0832006 Coin Vibration Motor LRA 2 8.0 3.2 1.8 0.1~1.8 80 58 235 - 1.40
The “typical current” is the average current from 20 motors selected at random from a given production lot. Copies of the test report showing the data collected for all 20 motors are available upon request.

 

NOTES:

  • Custom wire length are available for MOQ: 1K pcs
  • We can add connectors for MOQ: 1K pcs
  • Custom FPC’s are available for MOQ: 6K pcs.
  • Tooling and design fees will apply for custom FPC’s

When compared to standard brushed ERM vibration motors, LRA’s are higher in price and must be used with external driver IC.

Unlike conventional brushed DC vibration motors, linear resonant actuators must be driven by an AC signal at the devices resonant frequency.  The wire leads are typically different colors BUT the wires do not have polarity as the drive signal is AC , not DC.    A number of companies make IC drivers for linear vibration motors that supply the correct drive signals and contain a library of haptic effects you can choose from. TI is one such company that makes LRA drivers IC’s. TI makes and evaluation board that incorporates the TI DRV2605L haptic driver IC. See below link for info:

http://www.digikey.com/en/product-highlight/t/texas-instruments/drv2605-haptic-driver

It should be noted that unlike brushed ERM vibration motors, varying the amplitude of the applied voltage will only change the amplitude of the vibration force, not the frequency of vibration. Due the LRA’s Hi-Q , applying a frequency above or below the resonant frequency of the LRA will result in the LRA producing a lower vibration amplitude or if far from the resonant frequency, none at all.

 

 Config 1  WIRE  LEADS      Config 1.1 WIRE  LEAD  w.  CONNECTOR 

Coin Vibration Motors Config - WIRE LEADS

Coin Vibration Motors Config - WIRE LEAD w. CONNECTOR

We can supply this motor with a variety of
different connectors

 Config 2  Flexible Print Circuit    Config 3  Contact Pads for Springs / Pogo Pins

Coin Vibration Motors Config - Flexible Print Circuit

We can supply custom FPC’s for any
coin vibration motor.

Coin Vibration Motors Config - COMPRESSION SPRING MOUNT

 Config 4  BARE PCB    Config 5  Type 1 Helical Spring Contacts

Coin Vibration Motors Config - BARE PCB

Coin Vibration Motors Config - Type 1 Helical Spring Contacts

 Config 6  COMPRESSION SPRING MOUNT    Config 7  Type 2 Helical Spring Contacts

Coin Vibration Motors Config - COMPRESSION SPRING MOUNT

Coin Vibration Motors Config - Type 2 Helical Spring Contacts

Top