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參數資料
型號: LM4140CCMX-4.1/NOPB
廠商: NATIONAL SEMICONDUCTOR CORP
元件分類: 基準電壓源/電流源
英文描述: LM4140 High Precision Low Noise Low Dropout Voltage Reference; Package: SOIC NARROW; No of Pins: 8; Qty per Container: 2500/Reel
中文描述: 1-OUTPUT THREE TERM VOLTAGE REFERENCE, 4.096 V, PDSO8
封裝: SOIC-8
文件頁數: 1/15頁
文件大小: 881K
代理商: LM4140CCMX-4.1/NOPB
LM4140
High Precision Low Noise Low Dropout Voltage
Reference
General Description
The LM4140 series of precision references are designed to
combine high accuracy, low drift and noise with low power
dissipation in a small package.
The LM4140 is the industry’s first reference with output
voltage options lower than the bandgap voltage.
The key to the advance performance of the LM4140 is the
use of EEPROM registers and CMOS DACs for temperature
coefficient curvature correction and trimming of the output
voltage accuracy of the device during the final production
testing.
The major advantage of this method is the much higher
resolution available with DACs than is available economi-
cally with most methods utilized by other bandgap refer-
ences.
The low input and dropout voltage, low supply current and
output drive capability of the LM4140 makes this product an
ideal choice for battery powered and portable applications.
The LM4140 is available in three grades (A, B, C) with 0.1%
initial accuracy and 3, 6 and 10 ppm/C temperature coeffi-
cients. For even lower Tempco, contact National Semicon-
ductor.
The device performance is specified over the temperature
range (0C to +70C) and is available in compact 8-pin SO
package.
For other output voltage options from 0.5V to 4.5V, con-
tact National Semiconductor.
Features
n
High initial accuracy: 0.1%
n
Ultra low noise
n
Low Temperature Coefficient: 3 ppm/C (A grade)
n
Low voltage operation: 1.8V
n
SO-8 package
n
Low dropout voltage: 20 mV (typ) @ 1mA
n
Supply Current: 230 A (typ),
≤ 1 A disable mode
n
Enable pin
n
Output voltage options: 1.024V, 1.250V, 2.048V, 2.500V,
and 4.096V
n
Custom voltages from 0.5V to 4.5V
n
Temperature range (0C to 70C)
Applications Summary
n
Portable, battery powered equipment
n
Instrumentation and test equipment
n
Automotive
n
Industrial process control
n
Data acquisition systems
n
Medical equipment
n
Precision scales
n
Servo systems
n
Battery charging
Typical Application
10107901
COUT, Output bypass capacitor. See text for selection detail.
Typical Temperature Coefficient
(Sample of 5 Parts)
10107923
Refer to the Ordering Information Table in this Data Sheet for Specific Part
Number
February 2005
LM4140
High
Precision
Low
Noise
Low
Dropout
V
oltage
Reference
2005 National Semiconductor Corporation
DS101079
www.national.com
相關PDF資料
PDF描述
LM431ACM/NOPB LM431 Adjustable Precision Zener Shunt Regulator; Package: SOIC NARROW; No of Pins: 8; Qty per Container: 95/Rail
LM431ACM3/NOPB LM431 Adjustable Precision Zener Shunt Regulator; Package: SOT-23; No of Pins: 3; Qty per Container: 1000/Reel
LM431ACM3X/NOPB LM431 Adjustable Precision Zener Shunt Regulator; Package: SOT-23; No of Pins: 3; Qty per Container: 3000/Reel
LM431ACMX/NOPB LM431 Adjustable Precision Zener Shunt Regulator; Package: SOIC NARROW; No of Pins: 8; Qty per Container: 2500/Reel
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