By Bob Dobkin, John Hamburger
Design be aware Collection, the 3rd ebook within the Analog Circuit Design series, is a complete quantity of utilized circuit layout strategies, offering stylish and sensible layout strategies. layout Notes during this quantity are concentrated circuit motives, simply utilized on your personal designs. This ebook contains an in depth energy administration part, masking switching regulator layout, linear regulator layout, microprocessor energy layout, battery administration, powering LED lights, automobile and commercial energy layout. different sections span a variety of analog layout themes, together with info conversion, info acquisition, communications interface layout, operational amplifier layout concepts, clear out layout, and instant, RF, communications and community layout. no matter what your program -industrial, scientific, safety, embedded structures, instrumentation, car, communications infrastructure, satellite tv for pc and radar, pcs or networking; this e-book will offer useful layout options, constructed through specialists for tackling the demanding situations of energy administration, facts conversion, sign conditioning and wireless/RF analog circuit design.
- A wealthy number of utilized analog circuit layout suggestions to be used on your personal designs.
- Each layout word is gifted in a concise, two-page layout, making it effortless to learn and assimilate.
- Contributions from the top lighting in analog layout, together with Bob Dobkin, Jim Williams, George Erdi and Carl Nelson, between others.
- Extensive sections protecting strength administration, info conversion, sign conditioning, and wireless/RF.
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Additional resources for Analog Circuit Design, Vol. 3 Design Note Collection
Board space can be saved by using the LTC1045 level translator as a hex comparator—even though both comparator inputs are not available. 4 shows the LTC1045 used as a power supply monitor. The outputs of three power supplies are tied to the positive inputs through an appropriate resistive voltage divider. The divider ratio is set so that the voltage into the comparator equals the reference on the inverting input when the power supply voltage is at a critical level.
Let’s look at some numbers to see how this works. 5V output capable of delivering 15A to the load, with a ±6% (±90mV) transient window. For the first case, consider a classic converter with perfect DC regulation. Use a 10A load step with a slew rate of 100A/μs. The initial voltage spike will be determined solely by the output capacitor’s equivalent series resistance (ESR) and inductance (ESL). 75mΩ and an ESL = 375pH. 75mΩ · 10A) + (375pH · 100A/μs) = 75mV. This leaves a 1% margin for set point accuracy.
1 • SMBus Fan Speed Controller enable an optional boost feature that eliminates fan start-up problems by outputting 5V to the fan for 250ms before lowering the output voltage to its programmed value. Another important feature is that the system controller can read overcurrent and overtemperature fault conditions from information stored in the LTC1695. The part’s SMBus address is hard-wired internally as 1110 100 (MSB to LSB, A6 to A0) and the data code bits D0 to D6 are latched at the falling edge of the SMBus Data Acknowledge signal (D6 is a BoostStart Enable bit and D5 to D0 translate to a linearly proportional output voltage, 00 – 3F hex = 0V – 5V).
Analog Circuit Design, Vol. 3 Design Note Collection by Bob Dobkin, John Hamburger