SESSION SA20

SALON 9

AMPLIFIERS

Chair: T. Wakimoto, NTT, Kanagawa, Japan
Associate Chair: G. De Veirman, Silicon Systems, Tustin, CA

20.1 - Analog Video Line Driver with Adaptive Impedance Matching - 8:30 AM

B. Nauta, M. Dijkstra

Philips Research Labs., Eindhoven, The Netherlands

A line driver for analog video applications automatically adapts output impedance to the applied load. The circuit operates from 2.4V supply in digital 0.35um CMOS technology. The circuit adapts between 38 and 85W loads, has less than -50dB THD at 1.2Vpp for 0-10MHz, has 0.09mm² area, and 9mW static power consumption.

20.2 - A 100MHz 50 Ohm -45dB Distortion 3.3V CMOS Line-Driver for Ethernet and Fast Ethernet Networking Applications - 9:00 AM

J. Babanezhad

Plato Labs., San Jose, CA

A 0.15mm² differential architecture and uses current feedback for small-signal and large signal closed-loop bandwidths in excess of 100MHz. The circuit consumes 25mW to drive a 10MHz, 5Vpp sine wave across a 50 Ohm load from a 3.3V power supply with a THD=45dB.

20.3 - A 300^oC Instrumentation Amplifier - 9:30 AM

P. de Jong, G. Meijer

Delft University of Technology, Delft, The Netherlands

An instrumentation amplifier in standard CMOS uses dynamic feedback. Gain error is <25ppm without calibration or trimming. Long-term stability is less than 10ppm per year up to 200-225^oC. The amplifier functions up to 300^oC where leakage currents are significant.

BREAK 10:00 AM

20.4 - A +/- 2.45V-Swing CMOS Telescopic Operational Amplifier - 10:15 AM

K. Gulati, H-S. Lee

MIT, Microsystems Technology Lab., Cambridge, MA

A 3.3V, 4.8mW CMOS telescopic opamp achieves a measured differential swing of +/- 2.45V with differential gain of 90dB and >50dB CMRR. This swing is achieved by using the tail and current source transistors in deep linear region. The resulting reduction in gain and CMRR is compensated by applying differential gain enhancement and replica-tail feedback, respectively.

20.5 - A 2V 7.2^o-Jitter AM-Supression CMOS Amplifier using Current-Mode Hybrid Magnitude Control - 10:45 AM

T-H. Yang, K-H. Huang, C-K. Wang, T-L. Deng¹

National Central University, Chung-Li, Taiwan, R.O.C.

¹Industrial Technology Research Institute, Hsin-Chu, Taiwan, R.O.C.

An AM-suppression amplifier combining transition-based AGC and hysteresis limiter achieves a jitter of 7.2^o for 1Mb/s dynamic PPM input from 40mV to 400mVPP, six times better than conventional approaches. The amplifier occupies 0.64mm² in digital 0.8um CMOS and consumes 18mW from a 2V supply.

20.6 - 5GSample/s Track-Hold and 3GSample/s Quasi-Sample-Hold ICs - 11:15 AM

Z. Lao, A. Thiede, H. Lienhart, M. Schlechtweg, W. Bronner, J. Hornung, A. Hulsmann, T. Jakobus

Fraunhofer-Institute of Applied Solid-State Physics, Freiburg, Germany

Two fully-differential track-and-hold and quasi-sample-and-hold ICs use AlGaAs/GaAs-HEMTs. The less complex has 7b linearity. The ICs are capable of 5GSample/s at 2Vpp differential input for the track-and-hold, and 3GSample/s for the quasi-sample-and-hold.

CONCLUSION 11:45 AM

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