DRV2603ERM Datasheet, PDF (8/28 Pages) Texas Instruments – DRV2603 ERM/LRA Haptic Driver Evaluation Kit

Hardware Configuration
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Signal
Audio
Table 2. Hardware Overview (continued)
Description
The audio jack is connected to an ADC on the MSP430. This is used for
audio-to-haptics conversion using special software on the MSP430.
I/O
Input
Hardware configuration details can be found in the following sections.
3.2 Power Supply Selection
The DRV2603EVM-CT can be powered by USB or an external power supply (VBAT). Jumpers “DRV” and
“MSP” are used to select USB or VBAT for the DRV2603 and MSP430G2553, respectively. See the
following table for possible configurations.
Supply Configuration
DRV
MSP
DRV2603 Supply Voltage ⁽¹⁾
USB – Both
USB
USB
5V
DRV2603 External Supply, MSP430
USB
VBAT
USB
VBAT
External Supply - Both
VBAT
VBAT
VBAT
USB with 3.3V LDO⁽²⁾ - Both
USB
USB
3.3V (R4 = Short, R5 = Open)
(1) _{The DRV2603 supply must be on before operating the MSP430.}
(2) _{If a 3.3V DRV2603 supply voltage is preferred while using the USB as the power source, remove R5 and add a zero ohm}
resistor across R4.
3.3 Using an External Actuator
OUT-
OUT
OUT+
470 pF
100 k
100k
470 pF
From DRV2603
Figure 8. Terminal Block and Test Points
The DRV2603EVM-CT can be used with an external actuator. Follow the instructions below to attach an
actuator to the "OUT" terminal block.
1. Remove jumpers JP3 and JP4, which will disconnect the on-board actuators from the DRV2603.
2. Attach the positive and negative leads of the actuator to the green “OUT” terminal block keeping in
mind polarity.
3. Screw down the terminal block to secure the actuator leads.
It is important to use the green terminal block when connecting an external actuator. The "OUT+" and
"OUT-" testpoints have low-pass filters and should only be used for oscilloscope and bench
measurements.
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DRV2603 ERM/LRA Haptic Driver Evaluation Kit
SLOU340A – May 2012 – Revised May 2012
Copyright © 2012, Texas Instruments Incorporated
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