Design, Implementation and Comparison of 6-Bit 300MSPS Current Steering Digital-to-Analog Converters


Author (s):

  1. Khushali A. Shah, Vishwakarma Government Engineering College, Ahmedabad, Gujarat, India, khushali1105@gmail.com
  2. Mihir V. Shah, Vishwakarma Government Engineering College, Ahmedabad, Gujarat, India
  3. Naresh P. Patel, Vishwakarma Government Engineering College, Ahmedabad, Gujarat, India

Abstract:

Scaling in CMOS technology becomes a great challenge to the analog designer, as design complexity increases with increase in shrinking. Digital-to-Analog Converters are one of the crucial modules of analog blocks facing high performance demand. In this paper, Digital-to-Analog Converter is designed with different current steering architectures like, binary weighted, thermometer-coded (unary), segmented. Also, these architectures are implemented and compared with different parameters. The speed of these 6-bit DACs was 300MSPS. The maximum current was set 0.3mA and maximum voltage was set 15mV. So, for 6-bit, LSB current was set as 4.88uA and LSB voltage was set as 0.244mV by connecting 3.3V supply voltage. The load was connected as 50 ohm. Ngspice26 simulations with the 0.18-┬Ám complementary metal-oxide semiconductor technology were used.

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