Budget Amount *help |
¥4,550,000 (Direct Cost: ¥3,500,000、Indirect Cost: ¥1,050,000)
Fiscal Year 2011: ¥1,170,000 (Direct Cost: ¥900,000、Indirect Cost: ¥270,000)
Fiscal Year 2010: ¥2,210,000 (Direct Cost: ¥1,700,000、Indirect Cost: ¥510,000)
Fiscal Year 2009: ¥1,170,000 (Direct Cost: ¥900,000、Indirect Cost: ¥270,000)
|
Research Abstract |
In order to achieve high-precision Successive Approximation Register AD converter(SAR-ADC), we proposed three conversion methods with conversion redundancy : the non-binary search algorithm using one comparator and the binary search algorithm using three or two reference voltages and three or two comparators. Effectiveness of these methods was shown from the results of simulations and measurements. Furthermore, possibility of realization of high-precision DA converter(DAC) with 18-bit accuracy was addressed by using error correction method with a chopper-type amplifier and a synchronous detection for binary-weighted current DAC.
|