October 14, 2002
[Ideas For Design]
Add Programmable Gain To A Peak Detector
If your system's signal processing requirements in-clude peak detection and amplification, consider a simple circuit that will satisfy both needs and save hardware. The single-supply circuit shown in the ...
March 18, 2002
[Ideas For Design]
Programmable Schmitt Triggers Are Digitally Controlled
The circuit in Figure 1 is a single-supply version of a programmable Schmitt trigger, or a comparator with hysteresis. A comparator, A1, and a digitally programmable potentiometer (DPP1) are used for the...
October 1, 2001
[Ideas For Design]
Taking The Stops Out Of Digital Potentiometers
A three-wire bus is commonly used to control digitally controlled potentiometers (DCPs). One example of this type of bus is Xicor's 32-tap X9315 (U3), shown in the figure. This asynchronous bus has no...
June 26, 2000
[Ideas For Design]
Photovoltaic Transimpedance Amp Is Programmed By Digital Pots
Millions of photovoltaic detectors are used to sense and measure radiant energy in every type of industrial, medical, consumer, and scientific instrumentation application. By properly selecting materials and structure, solid-state photovoltaics can...
May 29, 2000
[Ideas For Design]
Precision Thermometer Linearizes, Digitally Calibrates Platinum RTDs
Among temperature transducers, the platinum resistance temperature detector (PRTD) is generally accepted as the “gold standard.” PRTDs are available with interchangeability accuracies as tight as 0.1°C over operational ranges extending from...
May 15, 2000
[Ideas For Design]
Programmable Pressure Transducer
The micromachined monolithic silicon piezoresistive-bridge pressure transducer (SPPT) is a dominant technology in automotive, industrial, medical, and environmental pressuresensing applications. Available from many vendors in many variations, all...
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