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Chair: B. Boser, Univ. of California, Berkeley, CA
Associate Chair: M. Knoll, Sandia National Labs, Albuquerque, NM
20.1 An 8-Channel 250MHz BiCMOS Discriminator for Medical Imaging (8:30)
A. Bigongiari, S. Brigati, G. Caiulo(1), G. Franchi, F. Maloberti(2)
C.A.E.N. S.p.A., Viareggio, Italy
(1)Intaltel Sit, Milano, Italy
(2)University of Pavia, Pavia, Italy
A discriminator integrates 8 equal channels on a single chip. It detects pulse signals 2mV above threshold with 4ns minimum duration and produces logic pulses of a duration programmable from 6ns to 10ms. The BiCMOS integrated system consumes 68mW per channel and occupies an area of 18mm2.
20.2 Integrated UV Sensor System with On-Chip 1GW Transimpedance Amplifier (9:00)
D. Bolliger, P. Malcovati, A. Häberli, P. Sarro(1), F. Maloberti(1), H. Baltes(2)
Physical Electronics Lab, ETH Zurich, Switzerland
(1)Technical Univ. of Delft, The Netherlands
(2)University of Pavia, Pavia, Italy
An integrated UV sensor for flame detection in combustion monitoring is realized in a 5V bipolar process. A single 4mm2 chip integrates a 1Gohm transimpedance amplifier with 10^9 V/A gain and bipolar-based UV photodiode with 20pA to 1nA current generation and 10Hz signal bandwidth.
20.3 A Laser-Detector-Hologram Unit Integrated with I-V Amplifiers and a Built-In Micromirror (9:30)
H. Ishiguro, S. Kamimura, T. Higashii, M. Hirose, A. Ueno(1), A. Yoshikawa, K. Itoh(1), M. Yamaguchi(1)
Matsushita Electronics Corp., Kyoto, Japan
(1)Matsushita Electronics Corp., Osaka, Japan
A laser-detector-hologram is for quad-speed CD-ROM. Four amplifiers with 10MHz cut-off frequency are used for I-V conversion of the photodetected signals. An operational amplifier for automatic power control of the laser is integrated with the photodetecting elements. A built-in 45° micromirror reflects the laser diode beam perpendicular to the chip surface.
BREAK (10:00)
20.4 2D Magnetic Microsensor with On-Chip Signal Processing for Contactless Angle Measurement (10:15)
A. Häberli, M. Schneider, P. Malcovati, R. Castagnetti(1), F. Maloberti(2), H. Baltes
ETH Zurich, Switzerland
(1)LSI Logic Corp., Santa Clara, CA
(2)University of Pavia, Pavia, Italy
A 3V CMOS-based 2D magnetic microsensor is used for contactless positioning control systems. A 2.6x4.1mm2 chip integrates a 20-200mT bipolar magnetotransistor, temperature and offset compensation circuitry, and signal conditioning for angle calculation. Angular resolution of 1° for B=100mT is obtained with 9mV power consumption.
20.5 A Temperature Sensor with Single-Resistor Set-Point Programming (10:45)
P. Brokaw
Analog Devices, Wilmington, MA
A monolithic circuit provides an open collector output that switches at a temperature preset by an external resistor. Only one on-chip resistor is trimmed to achieve a 1°C trip point accuracy over a -40°C to 150°C temperature range.
20.6 Single Chip Smart Power Camera Controller with Photodiode Current Measurement Down to 3nA(11:15)
M. Kacprowicz, G. Pedrazzini, M. Pozzoni, E. Ravanelli, G. Ricotti, D. Rossi, E. Strizhak(1)
SGS Thomson Microelectronics, Cornaredo, Italy
(1)Polaroid Corp., Cambridge, MA
This IC, together with an external 8b microcontroller, implements all the signal conditioning, measuring, and power actuation functions required by a photographic camera. The IC allows integration of a photodiode current signal (2nA-10uA) for scene brightness measurement and the simultaneous driving of a motor (3A current) by a PWM controlled DMOS H-bridge.
CONCLUSION (11:45)
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