| Abstract |
This paper presents an advanced analog-to-digital conversion technique based on a
voltage-to-frequency-to-digital conversion that is suitable for remote sensors, telemetry applications
and multichannel data acquisition systems. A voltage-to-frequency conversion part can be based, for
example, on high performance, charge-balance voltage-to-frequency converter (VFC), where
monostable is replaced by a bistable, driven by an external clock, or other existing high performance
VFCs. The frequency-to-digital converter “bottleneck” problem in such promised ADC scheme was
solved due to proposed advanced method of the dependent count for frequency-to-digital conversion.
This ADC technique lets receive many advantages such as high accuracy, relatively low power
consumption, low cost solution, wide dynamic range, great stability and faster conversion time in
comparison with existing VFC-based techniques. The conversion rate (6.25 µs to 6.25 ms) in such
ADC scheme is programmable, non-redundant, shorter than for pulse counting technique and
comparable with successive-approximation and Σ- ADC. |
Get the full paper by clicking here
