AD2S44 is a 14-bit dual channel synchro/resolver-to-digital converter designed specifically for applications where space, weight, and cost are at a premium. Each 32-lead hybrid device contains two independent Type II servo loop tracking converters. The ratiometric conversion technique employed provides excellent noise immunity and tolerance of noise sources.
The AD2S44 is a 14‑bit dual‑channel synchro/resolver‑to‑digital converter offered by Analog Devices. It features built‑in test (BIT), independent reference inputs for each channel, and a high tracking rate. The device is supplied in a 32‑lead DIL hybrid package and operates from ±15 V supplies.
Key specifications include 2.6 arc‑minute accuracy, 14‑bit resolution, 20 Rev/sec tracking rate, 74 dB common‑mode rejection, and a typical power dissipation of 1.9 W. The converter provides parallel binary outputs and supports both synchro and resolver input formats.
| Accuracy | 2.6 arc minutes (typical, –25 °C to +85 °C) |
|---|---|
| Resolution | 14 bits (1 LSB = 1.3 arc minutes) |
| Tracking Rate | 20 Rev/sec |
| Common‑Mode Rejection | 74 dB |
| Signal Voltage Range | 11.8 V or 90 V rms |
The AD2S44 tracks input signals at up to 20 revolutions per second.
Typical accuracy is 2.6 arc minutes over the –25 °C to +85 °C temperature range.
The converter offers 14‑bit resolution, with each LSB representing 1.3 arc minutes.