ASIC PMm 2 08022008 BLOC DIAGRAM OF PMm

ASIC PMm 2 08/02/2008

BLOC DIAGRAM OF PMm 2 ASIC 08/02/2008 Selma CONFORTI. conforti@lal. in 2 p 3. fr 2

PREAMPLIFIER Vi Input signal Variable Cin 2. 5 p; 10 p 10 ns Number of pe: 1/3 pe to 300 pe ADJUSTABLE VALUES FOR ALL INPUTS 1 pe = 160 f. C 1/3 pe = 53 f. C 300 pe = 48 p. C Q= i dt, if dt=10 ns then i: 5 u. A to 5 m. A If Ri=50 ohm then Vi= 250 u. V to 250 m. V Variable Cf 1 p. F; 0. 5 p; 0. 25 p; 0. 125 p; …. 7 f. F ADJUSTABLE VALUES FOR EVERY INPUTS 08/02/2008 Selma CONFORTI. conforti@lal. in 2 p 3. fr 3

Preamplifier output waveforms Cf. from 1 p to 2 p Gain from 1 to 2. 5 Vin=20 m. V Cin set (2. 5 p) 08/02/2008 Selma CONFORTI. conforti@lal. in 2 p 3. fr 4

Creal Cobt 1 1, 023 1, 53 1, 75 1, 78 1, 875 1, 937 1, 973 1, 968 2 1, 9836 2, 019 1, 9914 2, 031 08/02/2008 Selma CONFORTI. conforti@lal. in 2 p 3. fr 5

Vout 08/02/2008 1/Vout CF 244, 4 0, 00409165 1 163, 5 0, 00611621 1, 5 140, 3 0, 00712758 1, 75 131 0, 00763359 1, 875 126, 7 0, 00789266 1, 937 124, 7 0, 00801925 1, 968 123, 8 0, 00807754 1, 9836 123, 1 0, 00812348 1, 9914 Selma CONFORTI. conforti@lal. in 2 p 3. fr 6

Preamplifier output waveforms Variable Cf By steps of 7 f. F; 15 f. F; 32 f. F; … Vin=20 m. V Cin set (2. 5 p) Delta (Vout)/Vout minimum About 0. 008 08/02/2008 Selma CONFORTI. conforti@lal. in 2 p 3. fr 7

Preamplifier output waveforms Variable Cin 2. 5 p; 10 p Vin=20 m. V Cf set (1 p) 08/02/2008 Selma CONFORTI. conforti@lal. in 2 p 3. fr 8

Output Linearity Output waveforms For differents Vin From 1 m. V to 250 m. V INPUT RANGE 1/3 pe-300 pe 50 f. C-50 p. C 250 u. V-250 m. V Good Output Linearity G=5 Until 250 m. V (50 p. C) 300 pe 08/02/2008 Selma CONFORTI. conforti@lal. in 2 p 3. fr 9

Output waveforms For differents Vin from 1 m. V to 250 m. V Vout(V) 2. 5 Output Linearity G maximum=10 Until 160 m. V (32 p. C) 200 pe 0 20 pe 300 pe 200 pe 08/02/2008 Selma CONFORTI. conforti@lal. in 2 p 3. fr 10

Variable Cin 1. 25 p; 2. 5 p; 5 p 08/02/2008 Selma CONFORTI. conforti@lal. in 2 p 3. fr 11

Cin=2. 5 p; Cf=1 p ADJUSTABLE W/L 08/02/2008 Selma CONFORTI. conforti@lal. in 2 p 3. fr 12