High-Accuracy Resolver Amplifier RDC-100
The ATSENSE RDC-100 is a resolver measurement amplifier optimized for precise angle and velocity detection. By supplying excitation signals to an amplitude modulation resolver and converting the returned sine and cosine signals, it delivers ABZ phase digital outputs and proportional analog voltages. Using a 16-bit RDC IC, the RDC-100 achieves angular accuracy of ±0.08° typical, supporting up to 20,000 r/min. Its compatibility with various resolver types, selectable resolution, and USB connectivity make it an ideal tool for motion control, automotive, and industrial R&D requiring accurate resolver signal processing.●Eliminates the complexity of using an R/D converter IC ●Analog voltage output proportional to angle and velocity (angle:0～10V, rotation velocity:±10V) ●ABZ phase outputs at TTL level ●Compatible for various amplitude modulation type resolvers (transformer ratio:0.286 or 0.5, input impedance:about 200Ω)
| resolver | |
| type | amplitude modulation type |
| transformer ratio | 0.286 or 0.5 (selectable by mechanical switch) |
| input impedance | about 100～200Ω |
| resolver output signal (excitation signal) | |
| signal | sine wave |
| frequency | 2 – 20kHz |
| voltage (transformer ratio 0.286) | differential 11.4Vp-p |
| voltage (transformer ratio 0.5) | differential 6.2Vp-p/td> |
| output current | 200mA maximum |
| resolver input signal (sin, cos modulation signal) | |
| voltage limit | differential 2.3～4.0Vp-p |
| current limit | 8.25μA |
| input impedance | 485kΩ |
| resolver measurement (RDC specifications) | |
| angular resolution | electable from 10,12,14,16bit |
| angle accuracy (arc min) | ±5arc min (Typical), ±10arc min(Max) |
| angle accuracy | ±0.08°(Typical)，±0.16°(Max) |
| velocity resolution | electable from 10,12,14,16bit |
| acceleration error | 30 arc min |
| filter | common mode filter |
| digital output (ABZ phase signal) | |
| voltage | 0-5V |
| resolution | selectable from 10, 12, 14 bit for electrical angle |
| pulse rate | selectable from 256, 1024, 4096 p/rev for mechanical angle |
| analog output | |
| angle voltage | 0-10V (0-360°) |
| rotation speed voltage | ±10V (±1～20000r/min) |
| rotation range | 0～20000 r/min (resolution dependent) |
| delay time | 5 – 12μs |
| general specifications | |
| PC interface | USB (USB-serial bridge) |
| insulation specification | power supply – ground ? each GND |
| power supply | DC12V (10 – 18V) |
| body case | aluminum case |
| external dimensions | W151×D150×H61 mm |
| weight | about 640g |
| operating temperature range | 0～40℃ (no condensation) |
