Secure contactless smartcard ASIC with DPA protection

A 10% ASK smartcard ASIC achieves 3e-10 BER in the presence of digital noise. A 2000 times reduction in digital signature amplitude greatly improves security against DPA attack. Voltage compliance is maintained for more than two decades of received power. The 2.8-mm/spl times/2.9-mm ASIC is fabricated in a 0.6 micron CMOS process with EEPROM.