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X9C103S Datasheet(PDF) 9 Page - Intersil Corporation |
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X9C103S Datasheet(HTML) 9 Page - Intersil Corporation |
9 / 11 page 9 FN8222.1 September 19, 2005 PERFORMANCE CHARACTERISTICS Contact the factory for more information. APPLICATIONS INFORMATION Electronic digitally controlled (XCDP) potentiometers provide three powerful application advantages; (1) the variability and reliability of a solid-state potentiometer, (2) the flexibility of computer-based digital controls, and (3) the retentivity of nonvolatile memory used for the storage of multiple potentiometer settings or data. Basic Configurations of Electronic Potentiometers Basic Circuits VR VR I Three terminal potentiometer; variable voltage divider Two terminal variable resistor; variable current VH/RH VL/RL VW/RW Cascading Techniques Buffered Reference Voltage – + +5V R1 +V -5V VW VREF VOUT OP-07 VW/RW VW/RW +V +V +V X (a) (b) VOUT = VW/RW Noninverting Amplifier VO = (1+R2/R1)VS 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 Ω 10k Ω 10k Ω 10k Ω -12V +12V TL072 Comparator with Hysteresis VUL = {R1/(R1 + R2)} VO(max) VLL = {R1/(R1 + R2)} VO(min) + – VS VO R2 R1 LM308A +5V -5V + – VS VO R2 R1 LT311A (for additional circuits see AN115) X9C102, X9C103, X9C104, X9C503 |
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