Consider the NMOS R−S flip−flop in Figure 16.63 biased at V D D = 2.5 V . The threshold voltages are 0.4 V (enhancement−mode devices) and −0.6 V (depletion−mode devices). The conduction parameters are K 3 / K 6 = 40 μ A/V 2 , K 2 / K 5 = 100 μ A/V 2 , and K 1 / K 4 = 150 μ A/V 2 . If Q = logic 0 and Q ¯ = logic 1 initially, determine the voltage at S that will cause the flip−flop to change states.
Consider the NMOS R−S flip−flop in Figure 16.63 biased at V D D = 2.5 V . The threshold voltages are 0.4 V (enhancement−mode devices) and −0.6 V (depletion−mode devices). The conduction parameters are K 3 / K 6 = 40 μ A/V 2 , K 2 / K 5 = 100 μ A/V 2 , and K 1 / K 4 = 150 μ A/V 2 . If Q = logic 0 and Q ¯ = logic 1 initially, determine the voltage at S that will cause the flip−flop to change states.
Solution Summary: The author calculates the value of the voltage at S that will cause the flip flop to change states.
Consider the NMOS R−S flip−flop in Figure 16.63 biased at
V
D
D
=
2.5
V
. The threshold voltages are 0.4 V (enhancement−mode devices) and −0.6 V (depletion−mode devices). The conduction parameters are
K
3
/
K
6
=
40
μ
A/V
2
,
K
2
/
K
5
=
100
μ
A/V
2
, and
K
1
/
K
4
=
150
μ
A/V
2
. If
Q
=
logic
0
and
Q
¯
=
logic 1
initially, determine the voltage at S that will cause the flip−flop to change states.
H5.
The DEIMOS camera attached to the KECK telescope uses an array of 16 CCDs.
Each CCD is an array of 2048 X 4096 pixels. What CTE value should we have so
that the charge transfer occurs with 99.9% efficiency from the first pixel of the first
CCD to the CCDs output node?
By using BPSK modulation from a communication channel, voice transmission is made at a data rate of 240 kbps. However, due to the low speed, it is desired to increase this rate to 3*240 kbps, but to keep the bandwidth constant while this process is being done. In order to do this, which and how many levels of modulation should be preferred.
( Binary data rate of 3 * 240 kbps transmitted per second, symbol rate should be obtained to provide the same bandwidth as modulation.)
The PIC 16F84A microcontroller has a built-in ADC.
a.
True.
b.
False.
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