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MD-90 Motor Driver
Data Sheet
<table><tbody><tr><th>Quantity</th><th>Unit Price</th></tr><tr><td>1</td><td>$1180</td></tr><tr><td>2</td><td>$1144</td></tr><tr><td>5</td><td>$1109</td></tr><tr><td>10</td><td>$1075</td></tr></tbody></table>
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<table><tbody><tr><th>Quantity</th><th>Unit Price</th></tr><tr><td>1</td><td>$1180</td></tr><tr><td>2</td><td>$1144</td></tr><tr><td>5</td><td>$1109</td></tr><tr><td>10</td><td>$1075</td></tr></tbody></table>
Description
The MD-90 is a 2-channel linear amplifier for operating the I-20 piezo motor. This original equipment manufacturer (OEM) unit can be used in two primary ways as a: 1.) 2-channel piezo motor driver complete with quadrature encoder feedback and 2.) 2-channel piezo device amplifier with analog feedback for both closed and open loop operation.
Specifications
<table><tbody><tr><td>Channels</td><td>2 with USB Interface</td></tr><tr><td>Maximum Continuous Current (mA)</td><td>90 (RMS current into a capacitive load)</td></tr><tr><td>Maximum Peak Current (mA)</td><td>90</td></tr><tr><td>Output Voltage</td><td>2 Channels -30 to +150 V</td></tr><tr><td>Amplifier bandwidth (kHz)</td><td>> 5 (-3 dB)</td></tr><tr><td>Electrical Noise on Output (mVrms)</td><td>~2</td></tr><tr><td>Operating Voltage</td><td>24 VDC input at 3A</td></tr></tbody></table>
Analog
Two 16-bit and two 12-bit differential inputs
Two 16-bit DACS
Configurable input voltages (eight ranges)
Digital
Differential or single ended encoder inputs 5V 1A max to power encoder
Eight digital IO lines ( can be configured for input or output during manufacturing)
Processors
Dedicated power supply controller (closed loop voltage control)
Remote enable and soft start to limit current on power up
Main controller limits output current for each channel
Physical
Original equipment manufacturer (OEM) style with board edge connectors
1” X 2” X 6” enclosure
Operation
Each channel is independently controlled. Preprogrammed waveforms for DSM's motors are included.
