參數(shù)資料
型號: LMV7272TLX
廠商: NATIONAL SEMICONDUCTOR CORP
元件分類: 比較器
英文描述: Single & Dual, 1.8V Low Power Comparators with Rail-to-Rail Input
中文描述: COMPARATOR, 4000 uV OFFSET-MAX, PBGA8
封裝: MICRO, SMD-8
文件頁數(shù): 11/16頁
文件大?。?/td> 494K
代理商: LMV7272TLX
Application Notes
(Continued)
Non-Inverting Comparator with Hysteresis
A non-inverting comparator with hysteresis requires a two
resistor network, and a voltage reference (V
) at the in-
verting input (
Figure 4
). When V
is low, the output is also
low. For the output to switch from low to high, V
IN
must rise
up to V
IN1
, where V
IN1
is calculated by
When V
is high, the output is also high. To make the
comparator switch back to its low state, V
must equal V
before V
A
will again equal V
REF
. V
IN
can be calculated by:
The hysteresis of this circuit is the difference between V
IN1
and V
IN2
.
V
IN
= V
CC
R
1
/R
2
20064042
FIGURE 3. Inverting Comparator with Hysteresis
L
www.national.com
11
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