The AD2S1200 is a complete 12-bit resolution tracking resolver-to-digital converter, integrating an on-board programmable sinusoidal oscillator that provides sine wave excitation for resolvers. An external 8.192 MHz crystal is required to provide clock to the oscillator.
The AD2S1200 from Analog Devices provides a complete 12‑bit resolution tracking resolver‑to‑digital conversion, integrating a programmable sinusoidal oscillator for resolver excitation. It supports both parallel 12‑bit and 3‑wire serial interfaces, and offers incremental encoder emulation of 1,024 pulses per revolution.
The device includes fault detection for loss of signal, signal degradation, and loss of tracking, and operates from a single 5 V supply over a temperature range of –40 °C to +125 °C. It is supplied in a 44‑lead LQFP package and is intended for automotive, electric‑vehicle and industrial motion‑control applications.
| Resolution | 12 bits |
|---|---|
| Angular accuracy | ±11 arc min |
| Supply voltage | 5.00 V ± 5 % |
| Operating temperature range | ‑40 °C to +125 °C |
| Package | 44‑lead LQFP |
| Input signal amplitude | 3.6 V p‑p ± 10 % |
| Incremental encoder emulation | 1,024 pulses/rev |
The AD2S1200 provides 12‑bit resolution for both position and velocity data.
It operates from a single 5.00 V supply with a tolerance of ±5 %.