By Bob Dobkin, Jim Williams
Analog circuit and procedure layout at the present time is extra crucial than ever earlier than. With the expansion of electronic platforms, instant communications, complicated commercial and car structures, designers are being challenged to boost refined analog ideas. This finished resource e-book of circuit layout suggestions aids engineers with stylish and useful layout options that target universal analog demanding situations. The books in-depth software examples offer perception into circuit layout and alertness suggestions that you should practice in todays tough designs.
This is the significant other quantity to the winning Analog Circuit layout: an instructional advisor to purposes and ideas (October 2011), which has bought over 5000 copies in its the 1st 6 months of considering the fact that booklet. It extends the Linear know-how selection of software notes, which supplies analog specialists with a whole choice of reference designs and challenge fixing insights to use to their very own engineering demanding situations.
Read or Download Analog Circuit Design, Volume 2: Immersion in the Black Art of Analog Design PDF
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Additional resources for Analog Circuit Design, Volume 2: Immersion in the Black Art of Analog Design
11•6Vto12V,2AmpConverterwith9mA Quiescent Current wide variety of DC/DC converters, meeting an acknowledged need across a wide spectrum of applications. 11, but additional circuitry appears between the feedback divider and the VC pin. The LT1070’s internal feedback amplifier and reference are not used. 13 shows operating waveforms under no-load conditions. The 12V output (Trace A) ramps down over a period of seconds. During this time comparator A1’s output (Trace B) is low, as are the 74C04 paralleled inverters.
High frequency signals are filtered at A1’s inputs and do not corrupt A1’s stabilizing action. A useful way to consider circuit operation is that A2 will balance its inputs, and hence the circuit’s input and output, regardless of A1’s DC input errors. DC current bias is set to any desired point by a variable reference source directed to A2’s positive input. This network’s resistors are arranged for a minimum load current of 10mA, avoiding loop disruption for currents near zero. FilteringRestrictsA2’sResponsetoDC andLowFrequency 27 3 A closed-loop, wideband, 100A active load Brute force marries controlled speed Jim Williams Introduction Digital systems, particularly microprocessors, furnish transient loads in the 100A range that a voltage regulator must service.
Despite the complex dynamics transient response is quite good. 17 shows performance for a step from no load to 1 ampere. When Trace A goes high a 1 ampere load appears across the output (Trace B). Initially, the output sags almost 150mV due to slow loop response time (the R6-C2 pair delay VC pin response). When the LT1070 comes on (signaled by the 40kHz “fuzz” at the bottom extreme of Trace B) response is reasonably quick Note 1: Some layouts may require substantial trace area to A1’s inputs. In such cases the optional 10pF capacitor shown ensures clean transitions at A1’s output.