ꢀ ꢁꢂ ꢃ ꢄ ꢄꢅ ꢂ ꢆ ꢀ ꢁꢂ ꢃ ꢄ ꢄꢅ ꢇ ꢆ ꢀ ꢁꢂ ꢃꢄ ꢄꢅ ꢈ
ꢉ ꢊꢋꢌꢍ ꢊꢎꢁ ꢏ ꢐ ꢑꢒꢇ ꢀ ꢌꢇ ꢓꢇ ꢀꢋꢁ ꢑꢀꢔ ꢑꢋꢕꢋꢁ ꢔ ꢓ ꢂꢔ ꢕꢖ ꢏꢍ ꢀꢏ ꢍ ꢗ
ꢘ
ꢘ
SLAS060E – JANUARY 1995 – REVISED JANUARY 2003
APPLICATION INFORMATION
staircase window comparator (continued)
REF
Window 1
Window 2
OUTA
OUTB
Window 3
OUTC
OUTD
Window 4
Window 5
AGND
Figure 11. Adjacent Window Structure
The circuit can easily be adapted as shown in Figure 12 to allow for overlapping of windows. When the three
outputs from this circuit are decoded, five different nonoverlapping programmable window possibilities can
again be defined (see Figure 13).
5 V
Reference Voltage
V
10 kΩ
test
From DUT
+
_
4
Window 1
REF
OUTA
+
_
2
1
5 V
10 kΩ
+
_
OUTB
Window 2
TLC7226
OUTC
+
_
20
19
5 V
10 kΩ
+
_
OUTD
Window 3
AGND
+
_
5
Figure 12. Overlapping Window Circuit
13
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