M-PAM receiver with successive approximation register analog-to-digital converter on wireless robotic applications

In this paper, we study on the automatic gain control (AGC) scheme for pulse amplitude modulation (PAM) with 1.8-V 10-bit 100MS/s successive approximation register (SAR) analog-to-digital converter (ADC) analog-to-digital converters (ADCs) by TSMC 0.18-um CMOS process. For M-PAM networked control systems, this design investigate the problem of AGC schemes under the assumption that applied ten comparators followed by an asynchronous trigger logic, the proposed SAR ADC achieves high speed operation are used at the receiver end. Compared to the conventional SAR ADC, there is no significant delay in the digital feedback logic on robotic wireless control system. With the sampling rate limited only by the ten delays of the capacitor DAC settling and comparators quantization. For of the fixed threshold ADCs, and altering the gain to ADC input, we propose an algorithm based on ADC output's distribution-function to adjust the gain of the amplifier in front of the ADC.