This application note presents examples of circuits which offer substantially improved performance over commercially available V→Fs. Various approaches (see Box Section, “V→F Design Techniques”) permit improvements in speed, dy- namic range, stability and linearity.
The document introduces specific V→F circuits designed to offer substantially improved performance over commercially available units. It covers various approaches to enhance speed, dynamic range, stability, and linearity.
Key designs include an ultra-high speed converter operating from 1Hz to 100MHz with a 160dB dynamic range, utilizing chopper-stabilized amplifiers and charge pumps for high linearity and low drift. Another design focuses on fast response (settling in 3μs) suitable for FM applications by using direct charge feedback without a servo amplifier.
The circuit accepts an input voltage ranging from 0V to 10V.
The circuit operates at a full-scale speed of 100MHz.
The circuit settles in only 3μs when stepping from a full-scale input.