TC14433 Datasheet, PDF (7/10 Pages) TelCom Semiconductor, Inc – 3-1/2 DIGIT A/D CONVERTERS

3-1/2 DIGIT A/D CONVERTERS
1
TC14433
TC14433A
0.1 µF
470k ^{0.1 µF}
+V
27k
TC04 _20k
C01 C02 R₁
R₁/C ₁C₁
V_x
V_AG
DS ₄
DS ₃
DS ₂
DS ₁
TC14433
Q₀
Q₁
V_REF
Q₂
Q₃
VDD VSS VEE EOC DU R_C R_C
+V –V
300k
–V
C
R
14024B
14070B 1/4
+V
14013B _{1/4 14070B}
D
Q
1/2 DIGIT
CR _RQ
14013B
D
Q
CR _RQ
PLUS
SIGN
–V 1/4 14070B
MINUS
SIGN
+V
BI D C B A Ph LD
14543B
g f edcba
BI D C B A Ph LD
+V
14543B
–V
g f edcba
+V
BI D C B A Ph LD
+V
+V
14543B
–V
g f e d c b a ^–V
2
3
4
5
Figure 11. 3-1/2 Digit Voltmeter with LCD Display
EOC
1/2 CLOCK CYCLE
DS₁
1/2 DIGIT
(MSD)
2 CLOCK
DS₂ ^CYCLES
18 CLOCK CYCLES
DS₃
DS₄
(LSD)
Figure 12. Digit Select Timing Diagram
TELCOM SEMICONDUCTOR, INC.
≈ 16,400 CLOCK CYCLES
BETWEEN EOC PULSES
6
7
8
3-133