The document discusses the advantages of resolver technology in industrial environments and introduces a solution that integrates a sine wave oscillator with an AD2S90 Resolver-to-Digital Converter. This combination creates a rugged, low-cost angular position transducer with digital output capabilities.
A practical implementation is detailed using a Size 11 brushless resolver. The design features a 12-bit resolution and supports high readout rates up to 137 kbyte/s. The note includes circuit diagrams for the oscillator and the complete digital resolver system, along with a component parts list.
| Resolution | 12 Bit |
|---|---|
| Max Read Rate | 137 Kbyte/s |
| Max Rotating Speed | 22,500 rpm |
| Settling Time (1° Step) | 5 ms |
| Settling Time (179° Step) | 20 ms |
| Logic /O Standard | TTL |
| Power Supply | +5V |
| Operating Temperature Range | -40°C to +85°C |
The design uses a Size 11 Brushless Resolver, an AD2S90 Resolver-to-Digital Converter, and various resistors and capacitors.
Yes, it can be used as a direct replacement for an encoder without needing to change or upgrade the interface.