A low power and high speed data transfer scheme with asynchronous compressed pulse width modulation for AS-memory

We propose a high speed and low power data transfer scheme for the wide internal data bus of an AS-Memory using the asynchronous compressed pulse width modulation (AC-PWM) technique and an automatic gain controlled (AGC) amplifier. The maximum bit rate per bus of AC-PWM increases by 12 times that of the conventional 100MHz data bus. The AGC amplifier achieves a fast data output while reducing by 1/3 the standby current. The proposed architecture is a key advance in the future development of AS-Memories.