Table of Contents
Analog Discovery Studio Canvas Design Guide
This Canvas Design Guide is current under construction
Overview
One of the key features of the Analog Discovery Studio is the versatility offered by the Canvas boards. Entire designs, demonstrations, and hands-on teaching tools can be swapped in and out with ease, taking advantage of multiple voltage lines and USB data lines provided by the Analog Discovery Studio.
On board microprocessors and systems present on canvases can be configured through the provided USB data lines, allowing for custom embedded labs that take advantage of the supplied voltage rails to measure data from different sensors. Variable voltage and dedicated +12V, -12V, +5V, +3.3V supplies and multiple ground lines are provided to support a variety of peripherals.
Power Supplies
The Analog Discovery Studio provides several voltage rails to power an attached Canvas. The following specifications are based on the power supply included with the Analog Discovery Studio.
| Voltage Rail Name | Voltage Range | Maximum Amperage | Maximum Capacitance |
|---|---|---|---|
| +12 Volt Rail | +12V ±5% | 0.2 A | 1000 uF |
| -12 Volt Rail | -12V ±5% | 0.2 A | 150 uF |
| +5 Volt Rail | +5.0V ±5% | 1.0 A | 1000 uF |
| +3.3 Volt Rail | +3.3V ±5% | 1.0 A | 1000 uF |
The Analog Discovery Studio also provides pair of programmable power supplies that are enabled and configured through the WaveForms software.
| Voltage Rail Name | Voltage Range | Maximum Power Output | Maximum Current Output | Accuracy (no load) | Output Impedance |
|---|---|---|---|---|---|
| V+ | 1V to 5V | 2.1 W | 700 mA | ±10 mV | 50 mΩ |
| V- | -1V to -5V | 2.1 W | 700 mA | ±10 mV | 50 mΩ |
Physical Dimensions
The Analog Discovery Studio has 10 power pins (pogo pins) that are located in the top center of the landing area to provide power to the loaded canvas. The two sets of 5 pogo pins have a 2.54 mm (100 mil) pitch and are each 2.25 mm in diameter. A slot in each of the corners is also provided for standoffs to magnetically attach the canvas to the Analog Discovery Studio. Digilent used 3/4 inch (19.05 mm) steel standoffs with a 1/4 inch (50.8 mm) outer diameter and a 6-32 thread. The screws used on the canvases to secure them to the standoffs are 6-32 x 0.250 inch (50.8 mm) machine screws.
PCB Considerations
Trance widths extending from the pogo pins provided by the Analog Discovery Studio are dependent on the custom canvas copper weight and current usage. If using the same machine screws used by Digilent, the total thickness of the canvas should not exceed 2.36 mm.