CAD latches onto new techniques for analog ICs

The Design of High-Frequency Continuous-Time Integrated Analog Signal Processing Circuits

“…It is well known that the key points for the success of design automation 피 digi뻐1 systems are simple and systematic circuit design procedures and the use of standard cell circuits, labeled gates. In 뻐떠og systems, the lack of simple design procedures and an 뻐alog gate result in the design of analog circuits still being limited to manual custom design and the initiation of an외og VLSI just being started [154][155][156][157][158][159][160]166]. In σansconductance-C based ASP systems, transconductors can be thought of as "analog gates," because they are basic elements in ASP circuits, for instance, in filters [1,[161][162][163][164][165][166].…”

Reply to recent comments by M. Ismail [MOSFET-C circuits]

“…He and his group published several papers in which they show and use the Czarnul-Song method without mentioning its originators at all; see, for example, [17], [18]. This omission has now propagated in the literature.…”

Design Approaches to Field-Programmable Analog Integrated Circuits

“…Programmable current-scaling circuits such as those used in [55,56] will allow the development of current-mode interconnect architectures. As analog circuits address problems in real-time image processing, where the density of``a computer at each pixel'' might be required [1], programmable neural network research will likely continue to in¯uence the development of con®gurable analog circuits. Research in the area of CNNs is progressing in an interesting direction [57], one that seeks to develop high level control of analog computing with the use of CNN based analog and logical computing units.…”

“…Burr Brown makes a digitally-programmable instrumentation ampli®er [23], using two con®guration bits to vary the gain in decade (1, 10, 100, 1000) or binary (1,8,64,512) steps for applications in data acquisition and instrumentation. The gain is set by a resistor network with resistors selected by switches placed in series with the high-impedance ampli®er inputs, minimizing gain errors due to the switch ON resistance.…”

“…The drive towards shorter design cycles for analog integrated circuits has demanded the development of high performance analog circuits that are recon®gurable and suitable for CAD methodologies [1].…”