1 / 15

F. Anghinolfi, P. Jarron, CERN F. Krummenacher, Smart Silicon System, Lausanne

NINO, an ultra-fast, low-power, front-end amplifier discriminator (developed for the Time-Of-Flight experiment in ALICE). F. Anghinolfi, P. Jarron, CERN F. Krummenacher, Smart Silicon System, Lausanne E. Usenko, IHEP Protvino M.C.S. Williams, INFN Bologna.

milton
Télécharger la présentation

F. Anghinolfi, P. Jarron, CERN F. Krummenacher, Smart Silicon System, Lausanne

An Image/Link below is provided (as is) to download presentation Download Policy: Content on the Website is provided to you AS IS for your information and personal use and may not be sold / licensed / shared on other websites without getting consent from its author. Content is provided to you AS IS for your information and personal use only. Download presentation by click this link. While downloading, if for some reason you are not able to download a presentation, the publisher may have deleted the file from their server. During download, if you can't get a presentation, the file might be deleted by the publisher.

E N D

Presentation Transcript

  1. NINO, an ultra-fast, low-power, front-end amplifier discriminator (developed for the Time-Of-Flight experiment in ALICE) F. Anghinolfi, P. Jarron, CERN F. Krummenacher, Smart Silicon System, Lausanne E. Usenko,IHEP Protvino M.C.S. Williams, INFN Bologna F. Anghinolfi CERN

  2. NINO, an ultra-fast, low-power, front-end amplifier discriminator NINO Electronic channel Differential cathode-anode signal. LVDS outputs 500fC average charge, up to few pC. Typical threshold at 50fC. < 3000 el. Noise @ 10pF Cdet Tunable input impedance (40-75W) 1ns front edge delay vs. input < 25 ps rms front edge time jitter Pulse width variable with input charge F. Anghinolfi CERN

  3. Very fast MRPC signal (100ps rise time) NINO, an ultra-fast, low-power, front-end amplifier discriminator Input stage • Common gate circuit with very high bandwidth (<1ns peaking time) • The input charge is flowing through the output load, while the input impedance is low • Input impedance (1/gmsb) is tuned to match the impedance of detector signal transmission lines • Stable (no signal feedback, fully differential circuit) v=ZL.i Input Impedance (1/gmsb) Input stage (half of fully differential circuit) F. Anghinolfi CERN

  4. NINO, an ultra-fast, low-power, front-end amplifier discriminator Current expression Input stage biasing circuit Rp Source impedance of M2 If M=2 Channel input device is same size and bias as M2 F. Anghinolfi CERN

  5. NINO, an ultra-fast, low-power, front-end amplifier discriminator • Low bandwidth feedback circuit to control input stage common mode DC settings • Th+/Th- are external inputs (voltages) to create current imbalance on input stage differential branches Input stage currents Diff pair outputs sense F. Anghinolfi CERN

  6. NINO, an ultra-fast, low-power, front-end amplifier discriminator i1 i2 Diff pair outputs sense • Fully differential structure from input to output • Gain is obtained by 4 consecutive stages as . High bandwidth low gain stages (G=6, BW=500Mhz) • Last stage is a open-drain differential pair to provide LVDS like outputs 2 2 F. Anghinolfi CERN

  7. NINO, an ultra-fast, low-power, front-end amplifier discriminator • Input stage, DC condition and Threshold setting 2 • Gain is obtained by 4 cascaded high bandwidth low gain stages (G=6, BW=500Mhz) Fully differential structure from input to output F. Anghinolfi CERN

  8. NINO, an ultra-fast, low-power, front-end amplifier discriminator Simulation results Input stage Channel Outputs 20 fC to 200fC input charge 100 fC to 2.1pC input charge, 50fC threshold F. Anghinolfi CERN

  9. NINO, an ultra-fast, low-power, front-end amplifier discriminator Delay and Width Time Measurement (test bench) NINO channel delay is only a fraction of this delay measurement F. Anghinolfi CERN

  10. NINO, an ultra-fast, low-power, front-end amplifier discriminator Pulse Width Measurement vs. Simulation (test bench) F. Anghinolfi CERN

  11. NINO, an ultra-fast, low-power, front-end amplifier discriminator 200 ps Time Jitter Measurement (test bench) Differential output jitter snapshot F. Anghinolfi CERN

  12. NINO, an ultra-fast, low-power, front-end amplifier discriminator Time slewing versus input charge (test beam, with MRPC detector) Pulse width measurement can be used for time walk correction F. Anghinolfi CERN

  13. NINO, an ultra-fast, low-power, front-end amplifier discriminator Contributions to 41ps resolution Time resolution and efficiency (test beam, with MRPC detector) 99.9% Quoted < 5ps now F. Anghinolfi CERN

  14. NINO, an ultra-fast, low-power, front-end amplifier discriminator • IBM 0.25 mm CMOS technology • 8 channels, 2x4 mm2 chip • Channel power is 27mW • Time resolution <5ps rms • Delay time 1ns • Pulse Width 2 to 8ns (or 16 to 21ns) • 3000 el. Noise @ Cdet=10pF The NINO ASIC bonded to the PCB F. Anghinolfi CERN

  15. NINO, an ultra-fast, low-power, front-end amplifier discriminator F. Anghinolfi CERN

More Related