CEA-LETI-D.MITEC-France
A matrix of 128 DNA probes, fabricated in a standard 0.8um CMOS chip, has promising applications for detection of gene alteration. The DNA probe electro-immobilization is based on a conducting polymer activated by an oligonucleotide probe. Control and addressing for the probe is integrated on the chip, which operates in a wet solution environment.
University of California at Los Angeles, CA
A switched-capacitor microsensor interface circuit directly eliminates charge-injection error in capacitive displacement measurement. The active charge cancellation system uses conventional 0.8um CMOS. The ACCS is based on feedback methods and requires no component matching to reduce charge injection by a factor >300 at the system input.
Analog Devices, B. V., Limerick, Ireland
A single-chip implementation of a P1451-compatible standard transducer interface module is 5.0 x 5.5mm2 in 0.6um CMOS and operates over 3V - 5.5V. It integrates 8-channel 12b 5us ADC, two 12b DACs, 8b microcontroller, 256B SRAM and 10.5kB EEPROM (10k write cycles).
Integrated Sensor Solutions, San Jose, CA
1Nagano Keiki Co., Ltd., Nagano-ken, Japan
A micropower interface circuit for fluidic flow measurement in commercial gas meters converts dynamic capacitive sensor readings from 1Hz to 150Hz into digital pulses. The signal path is 1st order SD modulation followed by a 3-pole, 1-zero IIR bandpass filter. Analog parameters are trimmed with on-chip EEPROM. Operating ranges are from 2.5V to 3.6V, and from -10 to +65oC, with 16mA active Idd.
Iowa State University, Ames, IA
1Nonvolatile Electronics, Eden Prairie, MN
A monolithic 4-20mA isolation circuit uses thin-film deposition on a standard 20V bipolar process. Giant-magnetoresistive-ratio (GMR) resistors magnetically sense current levels across a Si3N4 isolation barrier. The 0.72x1.5mm2 devices demonstrate 800V isolation, <0.3% full-scale non-linearity and dc to 400kHz bandwidth with 5V supply.
Nikon Corp., Semiconductor Device Center, Tokyo, Japan
A 256x256 buried-charge accumulator and sensing-transistor (BCAST) array image sensor has on-chip motion processing and video circuits. 240frames/s rate with a digital output and 78.2dB dynamic range, a 14uV/hole conversion gain with a video output at 60Frames/s are achieved.
Bell Labs., Lucent Technologies, Holmdel, NJ
1currently at Vero Beach, FL
2currently at Hewlett-Packard Labs., Palo Alto, CA
A 300x300 element, 500dpi direct-contact capacitive fingerprint sensor is implemented in a single 0.5um, 3LM CMOS chip. Modified dielectric layers improve sensitivity and provide a barrier to physical and chemical penetration. The 272mm2 die dissipates <110uW at 1.8V (standby) and <250uW during acquisition.
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