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> AD2S1200 resolver-to-digital converter w/oscillator (2)
AD2S1200 resolver-to-digital converter w/oscillator (2)
12-Bit R/D Converter with Reference Oscillator
AD2S1200YSTZ, 12-Bit Resolver-to-Digital Converter with Programmable Sinusoidal Oscillator, 44 Pin LQFP, Quantity 2, Analog Devices.
The AD2S1200 is a complete 12-bit resolution tracking resolver-to-digital converter, integrating an on-board programmable sinusoidal oscillator that provides sine wave excitation for resolvers. An external 8.192 MHz crystal is required to provide precision time reference. This clock is internally divided to generate a 4.096 MHz clock to drive all the peripherals.
The converter accepts 3.6 V p-p 10% input signals, in the range of 10 kHz to 20 kHz on the Sin and Cos inputs. A Type II servo 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 bandwidth of the converter is set internally to 1.7 kHz with an external 8.192 MHz crystal. The maximum tracking rate is 1,000 rps.
A complete monolithic resolver-to-digital converter (RDC), the AD2S1200 provides a fast (up to 1000 rps), accurate (up to +/ 11 arc minute), fully-integrated, RDC solution for variable speed control applications that require additional power. Automotive applications, such as power-assisted steering systems, and industrial applications where there are large temperature variations, such as glass manufacturing, require robust, resolver-to-digital conversion to ensure stability and precise positioning of mechanical movements in harsh temperature environments.
* Complete monolithic R/D converter
* Parallel and serial 12-bit data ports
* Absolute position and velocity outputs
* 11 arc minutes of accuracy
* 1,000 rps maximum tracking rate, 12-bit resolution
* Incremental encoder emulation (1,024 pulses/rev)
* Programmable sinusoidal oscillator on-board
* Compatible with DSP and SPI interface standards
* 204.8 kHz square wave output
* Single-supply operation (5.00 V 5%)
