TC1027 Datasheet, PDF (7/18 Pages) TelCom Semiconductor, Inc – LINEAR BUILDING BLOCK - QUAD LOW POWER COMPARATOR AND VOLTAGE REFERENCE

FIGURE 4-3:
V_DD
32.768 kHz “TIME OF
DAY” CLOCK
OSCILLATOR
32.768kHz
RA
150k
RB
150k
V_DD
+
–
R_C
CA
1M
100pF
TC1027
1/4
V_OUT
V_per = 30.52µsec
FIGURE 4-4:
NON-RETRIGGERABLE MULTIVIBRATOR
V_DD
TC1027
TC1027
R3
1M
R4
1M
IN
IN
t₀
R1
A
100k
R2
100k _B
GND
–
CMPTR1
+
R10
61.9k
R5
10M
D1
R6
562k
C
C1
100pF
R9
243k
TC1025
–
CMPTR2
+
R8
10M
D2
R7
1M
OUT
OUT
C
V_DD
GND
V_DD
GND
FIGURE 4-5:
SQUARE WAVE GENERATOR
V_DD
R1
100k ^1/4
TC1027
R4
V_DD
–
C1
+
R2
100k
R3
100k
V_H
=
R2 (V_DD)
R2 + (R1||R3)
V_L =
(V_DD) (R2||R3)
R1 + (R2||R3)
FREQ =
1
2(0.694)(R4)(C1)
© 2002 Microchip Technology Inc.
DS21284B-page 7