MC14532 ONSEMI [ON Semiconductor], MC14532 Datasheet - Page 7

• Manufacturer Part Number: MC14532
• Description: 8-Bit Priority Encoder
• Manufacturer: ONSEMI [ON Semiconductor]

DIGITAL TO ANALOG CONVERSION
inputs of the MC14512 with the most significant bit at
X7 and the least significant bit at X0. A clock input of up to
2.5 MHz (at V
A compromise between I
between N and P–channel outputs gives a value of R of
33 k ohms. In order to filter out the switching frequencies,
RC should be about 1.0 ms (if R = 33 k ohms, C
The analog 3.0 dB bandwidth would then be dc to 1.0 kHz.
ANALOG TO DIGITAL CONVERSION
MC1710. A digital eight–bit word known to represent a dig-
itized level less than the analog input is applied to the
MC14512 as in the D to A conversion. The word is increm-
ented at rates sufficient to allow steady state to be reached
between incrementations (i.e. 3.0 ms). The output of the
MC1710 will change when the digital input represents the
first digitized level above the analog input. This word is the
digital representation of the analog word.
The digital eight–bit word to be converted is applied to the
An analog signal is applied to the analog input of the
V
DD
DD
= 10 V) is applied to the MC14520B.
D15 D14 D13 D12 D11 D10 D9
E
D7
in
GS
Q3
D6
bias
Figure 5. Digital to Analog and Analog to Digital Converter
D5
for the MC1710 and
Figure 4. Two MC14532B’s Cascaded for 4–Bit Output
D4
D3
Q2
Q2
D2
[
Q1
D1
0.03 F).
http://onsemi.com
Q0
Q1
D8
D0
E
out
MC14532B
CLOCK
INPUT
R
Q0
7
V
DD
3/4 MC14071B
E
D7
D7
E
in
Q1
D0 D1 D2 D3 D4 D5 D6 D7
STOP
WORD
INCREMENTATION
in
C
D6
D6
1/2 MC14520B
Q2
D5
D5
V
E
DD
D4
D4
Q3
Q2
Q1
D3
D3
Q2
V
Q0
Q4
SS
R
D2
D2
Q1
MC1710
ANALOG
D1
D1
INPUT
A
B
C
Q0
X7 X6 X5 X4 X3 X2 X1 X0
Q1
C
DIGITAL INPUT/OUTPUT
D0
D0
E
TO BE CONVERTED
out
1/2 MC14520B
8–BIT WORD
Q2
MC14512
Z
E
E
WITH D
out
R
Q3
C
= “1”
in
ANALOG
OUTPUT
= “0”
Q4
R