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This paper describes the design of a Sensor Signal Conditioner for a pressure sensor transducer in automotive applications. The circuit has been implemented in a 0.35 um CMOS process and comprises an Instrumentation Amplifier (IA), a 2nd order Chebyshev active low pass filter and an 1st order incremental ADC. The IA consumes 3mA with a supply voltage of 5V. Measured gain is 30 dB with 10° of phase...
An ultra low power temperature sensor suitable for human body range monitoring has been implemented using a standard 2P4M 0.35 µm CMOS process. This sensor is based on a novel Time-to-Digital Converter (TDC) architecture, which makes use of an auto-resonant cascode gyrator-C active inductor. The fabricated sensor has an active area less than 200 µm × 300 µm. It has a 0.03 °C resolution and a ±0.15...
A long-range UHF RF identification (RFID) sensor has been designed using a 0.35- ??m CMOS standard process. The power-optimized tag, combined with the ultralow-power temperature sensor, allows an ID and a temperature reading range of 2 m from a 2-W effective radiated power output power reader. The temperature sensor is based on a ring oscillator, where the temperature dependence of the oscillation...
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