Title :
CMOS sensor interface for a robotics LAN
Author :
Carr, W.N. ; Kim, Y.B.
Author_Institution :
Dept. of Electr. Eng., New Jersey Inst. of Technol., Newark, NJ, USA
Abstract :
The authors describe a CMOS design for interfacing low-level analog levels from sensors to a robotics network. This interface IC contains analog signal conditioning, an 8-bit ADC (analog-to-digital converter), and protocol control for the interface between simple analog sensors and the local-area network. The ADC uses a combination linear switched capacitor array and a resistor-string successive approximation register technique for conversion. A bandgap reference utilizes the vertical n-p-n device obtained using the substrate as a collector. Calculated analog and digital power dissipation are 4.1 mW and 8.1 μW/Hz, respectively. Technology is 3-μm double-polysilicon, single-metal for the 3.5×4.0-mm2 chip
Keywords :
CMOS integrated circuits; analogue-digital conversion; electric sensing devices; local area networks; robots; signal processing equipment; 4.1 mW; 8-bit ADC; CMOS sensor interface; analog sensors; analog signal conditioning; bandgap reference; double-polysilicon; interface IC; linear switched capacitor array; local-area network; low-level analog levels; power dissipation; protocol control; resistor-string successive approximation register; robotics LAN; single-metal; vertical n-p-n device; Analog integrated circuits; Analog-digital conversion; Capacitors; Local area networks; Photonic band gap; Power dissipation; Protocols; Registers; Robot sensing systems; Sensor phenomena and characterization;
Conference_Titel :
University/Government/Industry Microelectronics Symposium, 1989. Proceedings., Eighth
Conference_Location :
Westborough, MA
DOI :
10.1109/UGIM.1989.37348
