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X9015WS8Z-2.7 Datasheet(PDF) 9 Page - Intersil Corporation |
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X9015WS8Z-2.7 Datasheet(HTML) 9 Page - Intersil Corporation |
9 / 12 page 9 FN8157.6 August 14, 2015 Applications Information Electronic digitally controlled potentiometers provide two powerful application advantages: (1) the variability and reliability of a solid-state potentiometer, and (2) the flexibility of computer-based digital controls. Basic Configurations of Electronic Potentiometers Basic Circuits VR VW/RW VR I THREE-TERMINAL POTENTIOMETER; VARIABLE VOLTAGE DIVIDER TWO-TERMINAL VARIABLE RESISTOR; VARIABLE CURRENT VH/RH VL/RL Cascading Techniques Buffered Reference Voltage – + +5V R1 +V –5V VW/RW VREF VOUT OP-07 VW/RW VW/RW +V +V +V X (a) (b) VOUT = VW Noninverting Amplifier + – VS VO R2 R1 VO = (1+R2/R1)VS LM308A VOLTAGE REGULATOR R1 R2 Iadj VO (REG) = 1.25V (1+R2/R1)+Iadj R2 VO (REG) VIN 317 OFFSET VOLTAGE ADJUSTMENT + – VS VO R2 R1 100k 10k 10k 10k -12V +12V TL072 COMPARATOR WITH HYSTERESIS VUL = {R1/(R1+R2)} VO(max) VLL = {R1/(R1+R2)} VO(min) + – VS VO R2 R1 LT311A +5V –5V (FOR ADDITIONAL CIRCUITS, SEE AN115.) X9015 |
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