1. 1 ACTAR meeting – Santiago March 2008 Requirements Features required not available in standard ASICs for HEP: Auto-triggerable. Large dynamic range. Low noise. Multiple sampling ? : –For tracks with angles. –For common mode rejection Hess2, jv 2008

2. 2 ACTAR meeting – Santiago March 2008 ALTRO For: The most advanced chip including A/D conversion On chip Baseline correction. Digital zero supression. External PA Against: Power 35mW/ch 16 ch./chips only. External PA. PASA treats only « cathod » signal polarity. Baseline correction limited.

3. 3 ACTAR meeting – Santiago March 2008 Proposal from TU Munich For: Smart triggering. Digital zero supression. Against: Doesnot exist

4. 4 ACTAR meeting – Santiago March 2008 AFTER + 511 cells SCA FILTER 100ns<tpeak<2us CSA 1 channel x72(76) 76 to 1 BUFFER Configuration Registers & Serial Interface 4-wire link ADC Test Test inputs 120fC<Cf<600fC Power SupplyReference Voltage Reference Current Power-On Reset AFTER CHIP SCA Controller W / R Mode CK Asic Spy Mode CSA;CR;SCAin MUX TH