AD2S99BPZ

AD2S99 programmable sinusoidal oscillator provides sine wave excitation for resolvers and a wide variety of ac transducers. The AD2S99 also provides a synchronous reference output signal(3VP-P square wave) that is phase locked to its SIN and COS inputs. In an application, the SIN and COS inputs are connected to the transducer’s secondary windings. The synchronous reference output compensates for temperature and cabling dependent phase shifts and eliminates the need for external preset phase compensation circuits. The synchronous reference output can be used as a zero crossing reference for resolver-to-digital converters such as Analog Devices’ AD2S80A, AD2S82A, AD2S83 and AD2S90. Typical application includes excitation source for resolvers, synchros, LVDTs, RVDTs, pressure transducers, load cells and AC bridges.

• Programmable sinusoidal oscillator
• Synthesized synchronous reference output
• Programmable output frequency range from 2KHz to 20KHz
• Loss of signal indicator
• Low cost sinusoidal oscillator
• Power supply range from 4.75VDC to 5.25VDC
• ±10° additional phase delay
• 0.002Vp-p/V power supply rejection ratio
• 20 lead PLCC package
• Operating temperature range from -40°C to +85°C

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ADI products are only authorized (and sold) for use by the customer and are not to be resold or otherwise passed on to any third party