GENERAL DESCRIPTION

The AD2S1210 is a complete 10-bit to 16-bit resolution tracking resolver-to-digital converter, integrating an on-board programmable sinusoidal oscillator that provides sine wave excitation for resolvers.

The converter accepts 3.15 V p-p ± 27% input signals, in the range of 2 kHz to 20 kHz on the sine and cosine inputs. A Type II servo loop is employed to track the inputs and convert the input sine and cosine information into a digital representation of the input angle and velocity. The maximum tracking rate is 3125 rps.

FEATURES

Complete monolithic resolver-to-digital converter

3125 rps maximum tracking rate (10-bit resolution)

±2.5 arc minutes of accuracy

10-/12-/14-/16-bit resolution, set by user

Parallel and serial 10-bit to 16-bit data ports

Absolute position and velocity outputs

System fault detection

Programmable fault detection thresholds

Differential inputs

Incremental encoder emulation

Programmable sinusoidal oscillator on-board

Compatible with DSP and SPI interface standards

5 V supply with 2.3 V to 5 V logic interface

−40°C to +125°C temperature rating

APPLICATIONS

DC and ac servo motor control

Encoder emulation

Electric power steering

Electric vehicles

Integrated starter generators/alternators

Automotive motion sensing and control