The digital-to-analogue converter of Figure 10.6(a) is required to give an output voltage in the range 0 to 2.55 V, corresponding to an 8-bit digital input signal 00000000 to 11111111. (a) Assuming VREF = -15 V, R= 1 kN, calculate the value of Rp required. (b) Find the output voltage corresponding to an input signal of 11000101.
The digital-to-analogue converter of Figure 10.6(a) is required to give an output voltage in the range 0 to 2.55 V, corresponding to an 8-bit digital input signal 00000000 to 11111111. (a) Assuming VREF = -15 V, R= 1 kN, calculate the value of Rp required. (b) Find the output voltage corresponding to an input signal of 11000101.
Introductory Circuit Analysis (13th Edition)
13th Edition
ISBN:9780133923605
Author:Robert L. Boylestad
Publisher:Robert L. Boylestad
Chapter1: Introduction
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this question from Measurements and Instrumentation course.
And this question from book:
Princeple of Measurement Systems by John P. Bentley, 4th edition.
all you need in the pictures (pic one:is Question && pic two: is Figure 10.6(a) .
Transcribed Image Text:MSB
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2°R
b7
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2'R
is
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2-R
14
ww
2°R
iz
w
2*R
12
ww
2°R
b6
bs
b4
RE
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bz
if
I V_=0
2°R
VREF
w
VOUT
Ry
LSB
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2°R
OV
b = 1- switch closed, b; = 0- switch open
ip =I = i7 + ig + is +...+i, + io
0- VOUT
but ip
RE
i.e. VOUT =-Rp (iy + i6 + is +... + i + ig)
VREF
REF by, 16 ='
iz =
2°R
VREF
2'R
VREF
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2°R
-bo
2'R
b6
bo
by
VOUT =
--RF
VREF
R
20 2! 22
Figure 10.6 Summing
amplifier DACS:
(a) Binary weighted
resistor network
Transcribed Image Text:10.2
The digital-to-analogue converter of Figure 10.6(a) is required to give an output voltage in the
range 0 to 2.55 V, corresponding to an 8-bit digital input signal 00000000 to 11111111.
(a)
Assuming VREF =-15 V, R= 1 kN, calculate the value of Rp required.
(b)
Find the output voltage corresponding to an input signal of 11000101.
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