AD2S99BPZ

The AD2S99BPZ is a programmable sinusoidal oscillator from Analog Devices designed to provide sine wave excitation for resolvers and AC transducers. It integrates a sine wave generator, phase detection logic, and loss of signal detection into a single 20-lead PLCC package. The excitation frequency is programmable via two select pins (SEL1, SEL2) to 2 kHz, 5 kHz, 10 kHz, or 20 kHz, with intermediate frequencies achievable using an external resistor. The device operates from a ±5V supply (4.75V to 5.25V) and draws 8 mA typical supply current. It provides a synchronous reference output (3 V p-p square wave) that is phase-locked to the SIN and COS inputs, compensating for temperature and cabling phase shifts. The loss of signal (LOS) output pin goes high when both secondary winding connections are disconnected. Frequency accuracy is ±5% at 25°C and ±10% over the -40°C to +85°C temperature range for the BP grade. The oscillator is available in a surface mount 20-LCC (J-Lead) package, also known as 20-PLCC (9x9 mm). The device is RoHS3 compliant (unverified) and has an MSL of 1 (unlimited).