Jan 13, 2008 #1 M mitgrace Full Member level 6 Joined May 8, 2004 Messages 367 Helped 6 Reputation 12 Reaction score 2 Trophy points 1,298 Activity points 2,526 Dear All : Does anyone have good ideal about refernce circuit for ADC design. internal refernce circuit. No add external cap , Thanks
Dear All : Does anyone have good ideal about refernce circuit for ADC design. internal refernce circuit. No add external cap , Thanks
Feb 7, 2008 #2 L lladnar23 Full Member level 4 Joined Mar 20, 2006 Messages 196 Helped 36 Reputation 72 Reaction score 3 Trophy points 1,298 Activity points 2,482 Look up some papers on bandgaps. That's what everybody uses.
Feb 8, 2008 #3 R rajanarender_suram Full Member level 4 Joined Jan 20, 2006 Messages 214 Helped 22 Reputation 44 Reaction score 10 Trophy points 1,298 Activity points 2,375 u can get good Voltage reference on chip with Bandgap with out external Cap... but not a I-reference without external resistor
u can get good Voltage reference on chip with Bandgap with out external Cap... but not a I-reference without external resistor
Feb 8, 2008 #4 R rajanarender_suram Full Member level 4 Joined Jan 20, 2006 Messages 214 Helped 22 Reputation 44 Reaction score 10 Trophy points 1,298 Activity points 2,375 u can get good Voltage reference on chip with Bandgap with out external Cap... but not a I-reference without external resistor
u can get good Voltage reference on chip with Bandgap with out external Cap... but not a I-reference without external resistor
Feb 8, 2008 #5 R rajanarender_suram Full Member level 4 Joined Jan 20, 2006 Messages 214 Helped 22 Reputation 44 Reaction score 10 Trophy points 1,298 Activity points 2,375 u can get good Voltage reference on chip with Bandgap with out external Cap... but not a I-reference without external resistor
u can get good Voltage reference on chip with Bandgap with out external Cap... but not a I-reference without external resistor
Feb 8, 2008 #6 kumarghz Member level 5 Joined Nov 25, 2006 Messages 85 Helped 10 Reputation 20 Reaction score 7 Trophy points 1,288 Location Penang, malaysia Activity points 1,938 to make life easy, use the simple series resistors voltage reference circuit. for more advance.. PTAT configuration is always my choice.
to make life easy, use the simple series resistors voltage reference circuit. for more advance.. PTAT configuration is always my choice.
Feb 11, 2008 #7 S sudheer_vlsi Junior Member level 2 Joined Dec 28, 2005 Messages 22 Helped 0 Reputation 0 Reaction score 0 Trophy points 1,281 Activity points 1,463 U cant get current refernce without external resitor. u can generate stable voltage refernce that can be converted to current by using a resistor.
U cant get current refernce without external resitor. u can generate stable voltage refernce that can be converted to current by using a resistor.