Low noise low power readout circuit for soft X ray detection

 

A. Cerdeira-Estrada¹, A. De Luca², A. Cuttin³ & R. Mutihac⁴

 

¹ Telital Spa, Trieste Italy, alberto.cerdeira@telit.net

² Depto. de Ingeniería Eléctrica, Sección de Computación, CINVESTAV-IPN, México D. F.,

³ Laboratory of Microprocessors, ICTP-INFN, Trieste Italy.

⁴ University of Bucharest, Electronic Department, Romania.

 

Received: September 18^th 2000.
Accepted: August 26^th 2002.

 

Abstract

A new low power CMOS ASIC for the detection of X-rays was optimized for low power and low noise. Theoretical calculations and optimizations are presented and compared with experimental results. Noise as low as 120+25-C_in [pF] ENC rms was obtained including a silicon detector of 1.3 pF and 0.3nA of leakage. The power consumption is less than 100 W. Other circuit parameters are also shown.

Keywords: Charge sensitive amplifiers, Equivalent noise charge, Sharper.

 

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References

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