The SDC/RDC1740, SDC/RDC1741 and SDC/RDC1742 are hybrid synchro or resolver‑to‑digital converters that provide continuous tracking conversion. They use internal isolating micro‑transformers and a monolithic BIMOS II IC to deliver high‑accuracy angle data in a 14‑bit (SDC1740) or 12‑bit (SDC1741/1742) digital word.
These converters are supplied in a 32‑pin welded metal package with hermetic sealing, offering military (‑55 °C to +125 °C) or industrial (0 °C to +70 °C) temperature ranges. Power is supplied by a +15 V analog rail and a +5 V digital rail, and data can be read via parallel outputs or through INHIBIT and BUSY control signals.
| Tracking Rate | 27 µs (SDC1740) / 8 µs (SDC1741/1742) |
|---|---|
| Operating Temperature Range | -55 °C to +125 °C (military) or 0 °C to +70 °C (industrial) |
| Package | 32‑pin welded metal package, hermetically sealed |
| Dimensions | 1.74 × 1.14 × 0.28 in (44.2 × 28.9 × 7.1 mm) |
| Power Supply | +15 V analog, +5 V digital, quiescent current ≈13 mA |
They are available for an industrial range of 0 °C to +70 °C and a military range of –55 °C to +125 °C.
They are housed in a 32‑pin welded metal package that is hermetically sealed.