ha17901at Renesas Electronics Corporation., ha17901at Datasheet - Page 13

• Manufacturer Part Number: ha17901at
• Description: Quadruple Comparators
• Manufacturer: Renesas Electronics Corporation.

HA17901A Series
6. Inverting Comparator (with Hysteresis)
7. Zero-Cross Detector (Single-Voltage Power Supply)
Rev.1.00 Mar 10, 2006 page 13 of 15
In this circuit, the output Vout inverts from high to low when +V
inverts from low to high when +V
and Vout = 15 V, this circuit will have a 5 V hysteresis. Figure 10 shows the I/O characteristics for the circuit in
figure 9.
In this circuit, the noninverting input will essentially beheld at the potential determined by dividing V
k
invert to the high level. (See figure 11.)
and 10 k
resistors. When V
Figure 10 Inverting Comparator I/O Transfer Characteristics
Vin
+Vin
V
20
16
12
CC
8
4
0
IN
IN
1S2076
0
is 0 V or higher, the output will be low, and when V
5.1 k
< V
Figure 9 Inverting Comparator
Figure 11 Zero-Cross Detector
CC
1 M
/3. With the circuit constants shown in figure 9, assuming V
5.1 k
100 k
Input Voltage V
5
1 M
HA17901A
+
V
CC
100 k
10 k 20 M
1 M
HA17339A
+
IN
V
10
CC
V
IN
(V)
CC
V
> (V
CC
V
CC
3 k
CC
= 15 V
Vout
5.1 k
+ Vout)/3. Similarly, the output Vout
Vout
15
IN
is negative, Vout will
CC
CC
with 100
= 15 V