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Period-To-Voltage Converter

2016-01-18 09:22  
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The input signal drives ICD. Because ICD`s positive input (V ) is slightly offset to 0.1 V, its steady state
Period-To-Voltage Converter

output will be around 13 V. This voltage is sent to ICC through D2, setting ICC`s output to 13 V. Therefore, point D is cut off by Dl, and CI is charged by the current source. Assuming the initial voltage on CI is zero, the maximum voltage (^Cinax) is given by: When the input goes from low to high, a narrow positive pulse is generated at point A. This pulse becomes -13 V at point B, which cuts off D2. ICC`s V voltage becomes zero. The charge on CI will be absorbed by ICC on in a short time. The time constant of C2 and R5 determines the discharge perioda€” about 10 /is. ICB is a buffer whose gain is equal to (R& R9)~Rg = lM5. ICD`s average voltage will be (1362f 1.545) 2 = 1052/. RIO and C3 smooth the sawtooth waveform to a dc output.

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