1. Analog Circuits Hiroyuki Murakami

2. CONTENTS Structure of analog circuits Development of wide linear range CSA system Problem of analog circuits How to resuscitate research of analog circuits

3. Signal Process for Nuclear measurement System Sensor Analog Signal Processor Analog Signal Processor Digital Signal Processor Digital Signal Processor Output

4. Structure of analog signal processor Pre-Amp. Pulse Amplifier & Shaper Pulse Amplifier & Shaper ADC Discriminator Single-channel Multi-channel

5. Pre-Amplifier Convert the electric signal from sensor to the voltage signal Drive the next stage amplifier Low noise Low power Large signal Use of large area detector Wide linear range High density ・・・ Specifications Function

6. Pulse amplifier & shaper Function Amplification of the signal voltage Separation of pileup signals Optimization of signal to noise ratio Modification of pulse shape

7. ADC Function Pulse amplitude convert to digital value Pulse area convert to digital value Pulse interval to digital value Specification lower level discriminator Single channel Multichannel

8. The equivalent circuit of the sensor Current source capacitance i(t) C

9. Trans-impedance amplifier capacitance Z1 Z2 G - + current source sensor

10. The equivalent circuit of the CSA

11. Output voltage

12. Input voltage

13. Loop Gain log G o : open-loop gain G C : close-loop gain

14. Hybrid CSA

15. Saturation Free CSA non-zero loop gain AMP CSA MOS Switch INPUToutput

16. Wide Linear Range CSA System Charge Divider Conventional CSA Non-Zero Loop Gain CSA Pulse Generator

17. Input Terminal Voltage Input Voltage Output Voltage

18. Input Terminal Voltage

20. output Terminal Voltage Conventional CSA

21. output Terminal Voltage Non-Zero Loop Gain CSA

22. output Terminal Voltage conventional CSA and Non-Zero Loop Gain CSA

23. Manpower Research expense Others

24. Education and Training ・・・