The electronics technology employed at Waddan can be roughly divided into three classes:

• Electronics embedded with the sensor to augment its function to work like a sensor;
• Electronics used at a system to perform some task based upon the sensor outputs;
• Electronics for operation of Test Stations and Process Equipment.

Most of our sensors are closed loop active devices with internal pick-offs, stable servo control and rebalance circuitry. The pick-off may be a capacitive impedance bridge, or an optical configuration or a tunnel diode. The servo controlling actions at a sensor level are produced by a complex PID control strategy. The bandwidth and speed of response of the sensor (often) dictate the use of analog electronics in designing these servo loops. Beyond the sensor output, the electronics employed is mostly digital, but can be mixed mode. On the simpler side, this could involve a low power and low component count design, where the processor, flash memory, I/O ports, AtoD, DAC and wireless transceiver are all packaged in one chip. A good example of such a system is ANDAS . On the complex side, the design may include a multi-core processor, several GB of RAM and flash, and bunch of dedicated peripheral I/Os. MAGI is a such a system with an IMU, a GPS, and a high power desk top computer system. Thus, electronics in our products range from simple analog servo loops for sensors to complex application specific digital electronics with small footprint SMDs.