Hi J,
From this E2E post: http://e2e.ti.com/support/other_analog/touch/f/750/p/223020/795834.aspx#795834 , yes, it is possible to drive 2 ERM wired in parallel. The following considerations:
- During ERM drive the device is in open-loop, so there is no special feedback, so functionally driving multiple ERMs is not a problem.
- The ERMs should be setup in parallel
- Ensure the equivalent resistance of all the ERMs is greater than 8 ohms, which is the minimum load impedance for the device.
If the ERMs you are driving do not meet the above requirements (attention to the load), then two separate DRV2605s will have to be used.
-Leonard
