高速电路设计技巧\sect1

高速电路设计技巧sect1
SECTION 1
HIGH SPEED OPERATIONAL AMPLIFIERS
Walt Kester

INTRODUCTION
High speed analog signal processing applications, such as video and
communications, require op amps which have wide bandwidth, fast settling time,
low distortion and noise, high output current, good DC performance, and operate at
low supply voltages. These devices are widely used as gain blocks, cable drivers,
ADC pre-amps, current-to-voltage converters, etc. Achieving higher bandwidths for
less power is extremely critical in today's portable and battery-operated
communications equipment. The rapid progress made over the last few years in
high-speed linear circuits has hinged not only on the development of IC processes
but also on innovative circuit topologies.

The evolution of high speed processes by using amplifier ba