Electronics - Analog and Digital Converters - Discussion
Discussion Forum : Analog and Digital Converters - General Questions (Q.No. 2)
2.
A 4-bit R/2R digital-to-analog (DAC) converter has a reference of 5 volts. What is the analog output for the input code 0101.
Discussion:
34 comments Page 3 of 4.
Askani said:
1 decade ago
Formula= Vref/2^n(msb bit*2^0+nextbit*2^1+nextbit*2^2+lsb bit*2^3)
Subodhunu said:
8 years ago
Va= Vref(1/2 + 0/4 + 1/8 + 0/16) (because 0101).
= 3.125 v.
= 3.125 v.
Chandrashekhar pantina said:
6 years ago
5/16*(5) = 1.5625V.
As R/2R network so,
1.5625*2 = 3.125V.
As R/2R network so,
1.5625*2 = 3.125V.
Nilima sinha said:
1 decade ago
Vo=Vref(0*2^0+1*2^-1+0*2^-2+1*2^-3)
=5(0.5+.25)
=3.125V
=5(0.5+.25)
=3.125V
Akshay said:
9 years ago
@Vidya.
R2r ladder has resolution =Vr/2^n (only).
R2r ladder has resolution =Vr/2^n (only).
Shah said:
1 decade ago
MOST EASY METHOD:
V(0ut) = (Vi/8)*digital input.
V(0ut) = (Vi/8)*digital input.
Chandrashekhar pantina said:
6 years ago
5/16*5 = 1.5625.
As R/2R so 1.5635*2 = 5.125V.
As R/2R so 1.5635*2 = 5.125V.
Mohith said:
8 years ago
Vref/8=5/8=0.625,
Va/0.625=5=0101,
Va=3.125.
Va/0.625=5=0101,
Va=3.125.
Nitu said:
1 decade ago
Vo = (Rf/R)(Vref)(Do/16+D1/8+D2/4+D3/2).
Pushpinder kansal said:
1 decade ago
v=5(5/16)
=1.5625
now 1.5625*2=3.125ans
=1.5625
now 1.5625*2=3.125ans
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