| Budget Amount *help |
¥17,550,000 (Direct Cost: ¥13,500,000、Indirect Cost: ¥4,050,000)
Fiscal Year 2017: ¥1,430,000 (Direct Cost: ¥1,100,000、Indirect Cost: ¥330,000)
Fiscal Year 2016: ¥5,980,000 (Direct Cost: ¥4,600,000、Indirect Cost: ¥1,380,000)
Fiscal Year 2015: ¥10,140,000 (Direct Cost: ¥7,800,000、Indirect Cost: ¥2,340,000)
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| Outline of Final Research Achievements |
We have developed an analog-digital mixed ASIC using a fourth-order delta sigma ADC circuit. The unit performance test of the new ASIC was conducted after the dedicated print circuit board was manufactured. As a result, we achieved linear performance that surpassed the ASIC onboard the Hitomi satellite launched in 2016. As a result of measuring the radiation resistance, the upper limit value of the frequency of latch-up in the orbit with a height of 550 km and an inclination angle of 30 ° was determined once in 48 years (90% reliability). In fact, even if latch-up is performed, a mechanism is provided to turn the power on and off while preventing thermal destruction, so it can be said that the latch-up resistance of the CCD camera when using the ASIC developed in this research is not a problem.
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