Precision programmable current source uses two ICs
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Here are some programmable current source Design Ideas which make good use of precision on-chip component matching.
Shunt circuit clips large transients or regulates voltage
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This clipper/shunt Design Idea is scalable from low to very high currents.
Programmable-gain amp achieves high gains
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Roll your own PGA to get the exact high gains you need.
AVR takes under 1µs to process quadrature encoder
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A good example of tight interrupt coding to interface to a quadrature encoder.
LTC Design Note: Increasing output voltage and current range using series-connected isolated μModule converters
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Stack isolated converters to increase output voltage.
Modded charge pump extracts power from digital signal
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At first glance, these charge pumps & voltage multiplier/inverters look conventional, but they have a trick up their sleeves.
LTC Design Note: Control the voltage of a remote load over any length of copper wire
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Read about how a unique component compensates for DC conductor loss without using extra sense wires.
Isolated USB-to-UART converter builds in 20 minutes for $20
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This Design Idea describes a simple project that embedded developers will love for keeping their computers safe from rogue USB devices.
Software PLL syncs to line using moving-average filter
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A software PLL with a jitter attenuator lends itself to AC-line filtering and many other applications.
Fast, low-noise JFET amp is stable over temperature
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This Design Idea combines the strong points of JFETs and CFAs to make a high-impedance amplifier that’s fast, stable over temperature, and quiet.
LTC Design Note: Dual-phase buck controller drives high density 1.2V/60A supply with sub-milliohm DCR sensing
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Low output voltages and use of DrMOS integrated FETs+drivers are hallmarks of this switcher design.
Single-MOSFET circuits gate & modulate
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The humble discrete MOSFET shows its versatility in this Design Idea.
Avago Tech Note: Strain sensing using optical phase interrogation technique with polymer optical fiber
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Optical phase interrogation with polymer fiber offers an easy to handle and integrate strain sensing solution.
LTC Design Note: 10A μModule step-down regulator with advanced input and load protection
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This switcher design has comprehensive electrical and thermal protection, and high efficiency over wide input-output ranges.
Read multiple switches using ADC
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How the author learned to interface 8 switches using zero GPIOs.
AC power measurement uses PWM & PAM
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Use clever pulse modulation techniques to multiply signals and measure power.
Gain-selectable IC yields voltage-to-current converter
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A voltage-to-current converter Design Idea with no discrete components and excellent specs.
LTC Design Note: Driver for 14-bit, 4.5 MSPS ADC operates over a wide gain range
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Assure optimum performance by matching up ADC and input driver.
Simulate digital filters with PSpice
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PSpice isn’t just for analog! This Design Idea shows it can handle digital filter simulation too.
LTC Design Note: Monolithic no-opto isolated flyback converter provides versatile solution
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This versatile chip handles flyback, buck, boost, and negative input, and features low standby current and up to 18W output.
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