LMP7300 Micropower Precision Comparator and Precision Reference with Adjustable
Hysteresis
September 2007
LMP7300
Micropower Precision Comparator and Precision
Reference with Adjustable Hysteresis
General Description
The LMP7300 is a combination comparator and reference
with ideal specifications for precision threshold detecting. The
precision 2.048V reference comes with a 0.25% maximum
error. The comparator features micopower (35 碌W), low offset
voltage (.75 mV max), and independent adjustable positive
and negative hysteresis.
Hysteresis control for the comparator is accomplished
through two external pins. The HYSTP pin sets the positive
hysteresis and the HYSTN pin sets the negative hysteresis.
The comparator design isolates the V
IN
source impedance
and the programmable hysteresis components. This isolation
prevents any undesirable interaction allowing the IC to main-
tain a precise threshold voltage during level detection.
The combination of low offset voltage, external hysteresis
control, and precision voltage reference provides an easy to
use micropower precision threshold detector.
The LMP7300 open collector output makes it ideal for mixed
voltage system designs. The output voltage upper rail is un-
constrained by V
CC
and can be pulled above V
CC
to a maxi-
mum of 12V. The LMP7300 is a member of the LMP
庐
precision amplifier family.
Features
(For V
S
= 5V, typical unless otherwise noted)
13 渭A
鈻?/div>
Supply current
4 渭s
鈻?/div>
Propagation delay
Input offset voltage
0.3 mV
鈻?/div>
100 dB
鈻?/div>
CMRR
100 dB
鈻?/div>
PSRR
鈻?/div>
Positive and negative hysteresis control
1 mV/mV
鈻?/div>
Adjustable hysteresis
Reference voltage
2.048V
鈻?/div>
0.25%
鈻?/div>
Reference voltage accuracy
1 mA
鈻?/div>
Reference voltage source current
2.7V to 12V
鈻?/div>
Wide supply voltage range
鈻?/div>
Operating temperature range ambient 鈭?0掳C to 125掳C
Applications
鈻?/div>
鈻?/div>
鈻?/div>
鈻?/div>
Precision threshold detection
Battery monitoring
Battery management systems
Zero crossing detectors
Typical Application
Micropower Precision Battery Low Voltage Detector for 3
Cell Discharge Voltage
20175642
20175646
LMP
庐
is a registered trademark of National Semiconductor Corporation.
漏 2007 National Semiconductor Corporation
201756
www.national.com
LMP7300MA 产品属性
精度
1
4ms
CMOS, MOS、开路集电极/开路输出、TTL
13μA
2.7V 到 12V
SOIC
8
-40°C 到 +125°C
No SVHC (19-Dec-2011)
7300
NSOIC
1
12V
2.7V
表面安装
开路集电极
LMP7300MA相关型号PDF文件下载
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