Switched-capacitor filters: precise, compact, inexpensive

Article Abstract:

Switched-capacitor filter (SCF) MOS ICs are finding applications in a wide range of markets beyond their original telephone network applications. Telephone applications of the $2 to $25 devices will account for $60 million worth of SCFs in 1988, and the non-telephone uses at $22.3 million rising to 1990's $27.7 million. Non-telephone applications include: audio equipment; speech analyzers, synthesizers, and recognizers; test instruments; and electronic musical instruments. An SCF is composed of op amps, capacitors, and switching transistors; combine filtering capabilities of analog and digital filters; come in five basic types: low-pass, high-pass, band-pass, band-pass rejection, and all-pass; are available as standard, semi-custom, and custom ICs; and are often configured with other devices on a single chip.

Integrated circuits, Cost benefit analysis, Capacitors, Trends, Market Analysis, Functional Capabilities, Analysis, Filters

---

Optical interconnects replace hardwire

Article Abstract:

Electrical connections for very large-scale integrated (VLSI) chips cannot handle electric signals fast and reliably enough. Power drain and the number of wires linking the chips and the circuit boards are immense. Connecting circuits by light offers the combination of large bandwidths and large fanout which is needed by real-time systems. Optical interconnects consume less power, are immune to crosstalk and interference, and the number of optical fibers connecting the circuits can be held to lower levels. An optical interconnect requires a source, an optical waveguide and a receiver. The developments achieved by several firms, including Rockwell and Honeywell, are described.

Circuit design, Optoelectronic devices, Very-large-scale integration, Very large scale integration

---

Similar abstracts:

• Abstracts: Part profiling: precise, noncontact dimensional measurement. Multigeometry optics for measuring finishes
• Abstracts: Scheduling to minimize the coefficient of variation. Predictive maintenance: the one-unit replacement model. Efficient heuristic and optimal approaches for n/2/F/sigma Ci scheduling problems
• Abstracts: Optical disks become erasable. Making compact disks interactive. Magnetic Disks: Storage Densities on the Rise
• Abstracts: Power semiconductors: fast, tough and compact. Growing 'Cool' Semiconductors. A New Class of Semiconductors
• Abstracts: Loran-C receiver performance in the presence of carrier-wave interference

This website is not affiliated with document authors or copyright owners. This page is provided for informational purposes only. Unintentional errors are possible.