AD2S81A/AD2S82A is a variable resolution monolithic resolver-to-digital converter that provides an analog signal proportional to velocity, which can be used to replace a tachogenerator. The converter features a one-chip solution, user-settable resolution, ratiometric tracking conversion, and user-settable dynamic performance.
The document describes the AD2S81A and AD2S82A, which are monolithic (BIMOS II) tracking resolver-to-digital converters. These devices convert resolver format input signals into a parallel natural binary digital word using a ratiometric tracking conversion method to ensure high-noise immunity.
| Power Consumption (Typical) | 300 mW |
|---|---|
| Maximum Tracking Rate (10 Bits) | 1040 rps |
| Resolution Options | 10, 12, 14 and 16 bits |
| Angular Accuracy (Model AD2S82ALP) | 2 arc min |
| Operating Temperature Range | -40°C to +85°C |
The converter can track resolver signals rotating at up to 1040 revs per second when set to 10-bit resolution.
The output word is in a three-state digital logic form available on eight or sixteen output data lines depending on the model.
They use a ratiometric tracking conversion method to ensure high-noise immunity and tolerance of lead length.