深圳市中立信电子科技有限公司

AD2S1205WSTZ

数据采集ADC/DAC – IC 12-Bit R/D Cnvtr

12-Bit RDC  with Reference Oscillator

GENERAL DESCRIPTION AD2S1205WSTZ

The AD2S1205 is a complete 12-bit resolution tracking

resolver-to-digital converter that contains an on-board

programmable sinusoidal oscillator providing sine wave

excitation for resolvers.

The converter accepts 3.15 V p-p ± 27% input signals on the Sin

and Cos inputs. A Type II tracking loop is employed to track the

inputs and convert the input Sin and Cos information into a digital

representation of the input angle and velocity. The maximum

tracking rate is a function of the external clock frequency. The

performance of the AD2S105 is specified across a frequency

range of 8.192 MHz ± 25%, allowing a maximum tracking rate

of 1250 rps.

FEATURES AD2S1205WSTZ

Complete monolithic resolver-to-digital converter (RDC)

Parallel and serial 12-bit data ports

System fault detection

±11 arc minutes of accuracy

Input signal range: 3.15 V p-p ± 27%

Absolute position and velocity outputs

1250 rps maximum tracking rate, 12-bit resolution

Incremental encoder emulation (1024 pulses/rev)

Programmable sinusoidal oscillator on board

Single-supply operation (5.00 V ± 5%)

−40°C to +125°C temperature rating

44-lead LQFP

4 kV ESD protection

Qualified for automotive applications

APPLICATIONS AD2S1205WSTZ

Automotive motion sensing and control

Hybrid-electric vehicles

Electric power steering

Integrated starter generator/alternator

Industrial motor control

Process control