This paper presents an improved multiplexer based encoder for flash analog-to-digital converters.... more This paper presents an improved multiplexer based encoder for flash analog-to-digital converters. The proposed encoder is designed using 2 : 1 multiplexers. This encoder can be configured to operate on thermometer-code with reduced resolution without any extra overhead. This encoder shows the re-configurable property i.e. higher resolution encoder can be configured as lower resolution encoder. This self re-configurable property can be used in adaptive resolution flash ADCs. Gray codes are mainly used in glitch free fast circuit design and in communication for error correction in digital modulation techniques. Simulation results indicate that power, delay and figure of merit of this encoder is less than the existing digital encoders. The encoder is designed in CMOS BSIM4 90nm technology and 1.2V power supply. The power consumption is 69μW with 7.375ns delay and 511.58fJ figure of merit using 1.2V power supply for 5 bit flash ADC.
A 4-bit flash analog to digital converter with high
speed, low power, and small area for system o... more A 4-bit flash analog to digital converter with high speed, low power, and small area for system on chip(SoC) applications is presented. The proposed ADC is designed with BSIM4 90nm CMOS technology and 1.2V power supply. In com-parison to the conventional analog comparators, it uses Threshold Inverter Quantization technique to generate comparators. The replacement results in a faster digital conversion and a reduction in power that make it suitable for battery powered applications. The TIQ comparator does not need a resistor ladder network because it uses built in reference voltage of the CMOS inverters for comparison. Proposed flash ADC uses a new mux based encoder which converts Thermometer code into Gray code. Gray codes are mainly used in glitches free fast circuit design and in communication for error correction in digital modulation techniques. The maximum sampling frequency of this ADC is 3:2GSPS. This ADC consumes 4:93mW power at 3:2GSPS. INL and DNL of proposed ADC are 0:775LSB and 0:15LSB respectively. The proposed A/D converter is suitable for mobile applications and other system on chip applications.
This paper presents an improved multiplexer based encoder for flash analog-to-digital converters.... more This paper presents an improved multiplexer based encoder for flash analog-to-digital converters. The proposed encoder is designed using 2 : 1 multiplexers. This encoder can be configured to operate on thermometer-code with reduced resolution without any extra overhead. This encoder shows the re-configurable property i.e. higher resolution encoder can be configured as lower resolution encoder. This self re-configurable property can be used in adaptive resolution flash ADCs. Gray codes are mainly used in glitch free fast circuit design and in communication for error correction in digital modulation techniques. Simulation results indicate that power, delay and figure of merit of this encoder is less than the existing digital encoders. The encoder is designed in CMOS BSIM4 90nm technology and 1.2V power supply. The power consumption is 69µW with 7.375ns delay and 511.58f J figure of merit using 1.2V power supply for 5 bit flash ADC.
This paper presents an improved multiplexer based encoder for flash analog-to-digital converters.... more This paper presents an improved multiplexer based encoder for flash analog-to-digital converters. The proposed encoder is designed using 2 : 1 multiplexers. This encoder can be configured to operate on thermometer-code with reduced resolution without any extra overhead. This encoder shows the re-configurable property i.e. higher resolution encoder can be configured as lower resolution encoder. This self re-configurable property can be used in adaptive resolution flash ADCs. Gray codes are mainly used in glitch free fast circuit design and in communication for error correction in digital modulation techniques. Simulation results indicate that power, delay and figure of merit of this encoder is less than the existing digital encoders. The encoder is designed in CMOS BSIM4 90nm technology and 1.2V power supply. The power consumption is 69μW with 7.375ns delay and 511.58fJ figure of merit using 1.2V power supply for 5 bit flash ADC.
A 4-bit flash analog to digital converter with high
speed, low power, and small area for system o... more A 4-bit flash analog to digital converter with high speed, low power, and small area for system on chip(SoC) applications is presented. The proposed ADC is designed with BSIM4 90nm CMOS technology and 1.2V power supply. In com-parison to the conventional analog comparators, it uses Threshold Inverter Quantization technique to generate comparators. The replacement results in a faster digital conversion and a reduction in power that make it suitable for battery powered applications. The TIQ comparator does not need a resistor ladder network because it uses built in reference voltage of the CMOS inverters for comparison. Proposed flash ADC uses a new mux based encoder which converts Thermometer code into Gray code. Gray codes are mainly used in glitches free fast circuit design and in communication for error correction in digital modulation techniques. The maximum sampling frequency of this ADC is 3:2GSPS. This ADC consumes 4:93mW power at 3:2GSPS. INL and DNL of proposed ADC are 0:775LSB and 0:15LSB respectively. The proposed A/D converter is suitable for mobile applications and other system on chip applications.
This paper presents an improved multiplexer based encoder for flash analog-to-digital converters.... more This paper presents an improved multiplexer based encoder for flash analog-to-digital converters. The proposed encoder is designed using 2 : 1 multiplexers. This encoder can be configured to operate on thermometer-code with reduced resolution without any extra overhead. This encoder shows the re-configurable property i.e. higher resolution encoder can be configured as lower resolution encoder. This self re-configurable property can be used in adaptive resolution flash ADCs. Gray codes are mainly used in glitch free fast circuit design and in communication for error correction in digital modulation techniques. Simulation results indicate that power, delay and figure of merit of this encoder is less than the existing digital encoders. The encoder is designed in CMOS BSIM4 90nm technology and 1.2V power supply. The power consumption is 69µW with 7.375ns delay and 511.58f J figure of merit using 1.2V power supply for 5 bit flash ADC.
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Papers by Yogendra Gupta
speed, low power, and small area for system on chip(SoC)
applications is presented. The proposed ADC is designed with
BSIM4 90nm CMOS technology and 1.2V power supply. In com-parison to the conventional analog comparators, it uses Threshold
Inverter Quantization technique to generate comparators. The
replacement results in a faster digital conversion and a reduction
in power that make it suitable for battery powered applications.
The TIQ comparator does not need a resistor ladder network
because it uses built in reference voltage of the CMOS inverters
for comparison. Proposed flash ADC uses a new mux based
encoder which converts Thermometer code into Gray code. Gray
codes are mainly used in glitches free fast circuit design and
in communication for error correction in digital modulation
techniques. The maximum sampling frequency of this ADC is
3:2GSPS. This ADC consumes 4:93mW power at 3:2GSPS.
INL and DNL of proposed ADC are 0:775LSB and 0:15LSB
respectively. The proposed A/D converter is suitable for mobile
applications and other system on chip applications.
speed, low power, and small area for system on chip(SoC)
applications is presented. The proposed ADC is designed with
BSIM4 90nm CMOS technology and 1.2V power supply. In com-parison to the conventional analog comparators, it uses Threshold
Inverter Quantization technique to generate comparators. The
replacement results in a faster digital conversion and a reduction
in power that make it suitable for battery powered applications.
The TIQ comparator does not need a resistor ladder network
because it uses built in reference voltage of the CMOS inverters
for comparison. Proposed flash ADC uses a new mux based
encoder which converts Thermometer code into Gray code. Gray
codes are mainly used in glitches free fast circuit design and
in communication for error correction in digital modulation
techniques. The maximum sampling frequency of this ADC is
3:2GSPS. This ADC consumes 4:93mW power at 3:2GSPS.
INL and DNL of proposed ADC are 0:775LSB and 0:15LSB
respectively. The proposed A/D converter is suitable for mobile
applications and other system on chip applications.