Jul 2, 2010 #1 O ombalone Newbie level 1 Joined Feb 3, 2010 Messages 1 Helped 0 Reputation 0 Reaction score 0 Trophy points 1,281 Location Bangalore Activity points 1,290 I have a unipolar DAC which gives only +ve o/p. i want it should be bipolar varies dynamically with the given i/p. i want a single ckt at the o/p of DAC that will handle the conversion of Unipolar to bipolar, please suggest me the ckt that will done conversion. om
I have a unipolar DAC which gives only +ve o/p. i want it should be bipolar varies dynamically with the given i/p. i want a single ckt at the o/p of DAC that will handle the conversion of Unipolar to bipolar, please suggest me the ckt that will done conversion. om
Jul 2, 2010 #2 Prototyp_V1.0 Advanced Member level 2 Joined Apr 3, 2007 Messages 673 Helped 119 Reputation 238 Reaction score 83 Trophy points 1,308 Location Norway Activity points 5,103 What do you mean by "ckt"? The easiest way to solve is to use a simple opamp adder circuit and add a negative voltage.
What do you mean by "ckt"? The easiest way to solve is to use a simple opamp adder circuit and add a negative voltage.
Jul 3, 2010 #3 K karesz Advanced Member level 5 Joined Apr 13, 2008 Messages 2,328 Helped 327 Reputation 654 Reaction score 52 Trophy points 1,328 Location EU Activity points 14,592 Hi your circuit is only one external op Amp + passives, their are in moderner DACs onchip.. https://www.linear.com/pc/productDetail.jsp?navId=H0,C1,C1155,C1005,C1156,P38512 K.
Hi your circuit is only one external op Amp + passives, their are in moderner DACs onchip.. https://www.linear.com/pc/productDetail.jsp?navId=H0,C1,C1155,C1005,C1156,P38512 K.
Jul 3, 2010 #4 S srizbf Advanced Member level 5 Joined Apr 3, 2010 Messages 1,992 Helped 417 Reputation 840 Reaction score 329 Trophy points 1,363 Activity points 10,985 connect a capacitor in the o/p of DAC. you will get bot + and - excursion. srizbf 3rdjuly2010
Jul 3, 2010 #5 E elrayes Full Member level 5 Joined Jun 3, 2008 Messages 244 Helped 20 Reputation 40 Reaction score 7 Trophy points 1,298 Location Egypt/Canada Activity points 2,777 use a clamping circuit to change the dynamic span of the output from +ve only to the range you want.
Jul 3, 2010 #6 K karesz Advanced Member level 5 Joined Apr 13, 2008 Messages 2,328 Helped 327 Reputation 654 Reaction score 52 Trophy points 1,328 Location EU Activity points 14,592 Hi, These "simple circuit" called over long years and long too in our future: "second OP" with gain of 2 .... Check pls. the LT Application, but its a well knowed circuit technik from all DAC vendors. K.
Hi, These "simple circuit" called over long years and long too in our future: "second OP" with gain of 2 .... Check pls. the LT Application, but its a well knowed circuit technik from all DAC vendors. K.