LM4140ACM-4.1 National Semiconductor, LM4140ACM-4.1 Datasheet

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LM4140ACM-4.1

Manufacturer Part Number
LM4140ACM-4.1
Description
IC, SM, VOLT REF, 0.1%, 3PPM
Manufacturer
National Semiconductor
Datasheet

Specifications of LM4140ACM-4.1

Topology
Series
Input Voltage
4.3V To 5.5V
Reference Voltage
4.096V
Voltage Reference Case Style
SOIC
No. Of Pins
8
Operating Temperature Range
0°C To +70°C
Svhc
No
Temperature Coefficient
3ppm/°C
Lead Free Status / RoHS Status
Lead free / RoHS Compliant

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© 2005 National Semiconductor Corporation
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 (0˚C to +70˚C) and is available in compact 8-pin SO
package.
For other output voltage options from 0.5V to 4.5V, con-
tact National Semiconductor.
Typical Application
C
OUT
, Output bypass capacitor. See text for selection detail.
DS101079
10107901
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)
n Supply Current: 230 µA (typ), ≤ 1 µA disable mode
n Enable pin
n Output voltage options: 1.024V, 1.250V, 2.048V, 2.500V,
n Custom voltages from 0.5V to 4.5V
n Temperature range (0˚C to 70˚C)
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
Refer to the Ordering Information Table in this Data Sheet for Specific Part
Number
and 4.096V
Typical Temperature Coefficient
(Sample of 5 Parts)
@
1mA
10107923
February 2005
www.national.com

Related parts for LM4140ACM-4.1

LM4140ACM-4.1 Summary of contents

Page 1

... For other output voltage options from 0.5V to 4.5V, con- tact National Semiconductor. Typical Application C , Output bypass capacitor. See text for selection detail. OUT © 2005 National Semiconductor Corporation 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 ...

Page 2

... Input (Pin 2): Ground (Pins 8): Enable (Pin 3): NC (Pin 5): www.national.com Temperature Range LM4140 Supplied as 95 Units, Tape and Reel LM4140ACM-1.0 LM4140ACM-1.2 LM4140ACM-2.0 LM4140ACM-2.5 LM4140ACM-4.1 LM4140BCM-1.0 LM4140BCM-1.2 LM4140BCM-2.0 LM4140BCM-2.5 LM4140BCM-4.1 LM4140CCM-1.0 LM4140CCM-1.2 LM4140CCM-2.0 LM4140CCM-2.5 LM4140CCM-4.1 8-Lead Surface Mount (M) 10107902 Top View See NS Package Number M08A Reference Output ...

Page 3

... Absolute Maximum Ratings If Military/Aerospace specified devices are required, please contact the National Semiconductor Sales Office/ Distributors for availability and specifications. Maximum Voltage on any Input pin Output Short-Circuit Duration Power Dissipation (T = 25˚C) (Note A 2) ESD Susceptibility (Note 3) Human Body Model Machine Model ...

Page 4

LM4140 Electrical Charateristics Unless otherwise specified 3.0V for the LM4140-1.024 and LM4140-1.250 1µF (Note 4 1mA OUT LOAD face type apply over 0˚C to 70˚C temperature range. ...

Page 5

LM4140 Typical Performance Characteristics Unless otherwise specified 25˚C, No Load 1µ 3.0V for LM4140-1.024 and LM4140-1.250, and IN 5V for all other voltage options Power Up/Down Ground Current * The ...

Page 6

LM4140 Typical Performance Characteristics C = 1µ 3.0V for LM4140-1.024 and LM4140-1.250, and 5V for all other voltage options. V OUT IN Output Impedance Dropout Voltage vs Load Current Note: 1.024V and 1.250V options require 1.8V supply. www.national.com ...

Page 7

LM4140 Typical Performance Characteristics C = 1µ 3.0V for LM4140-1.024 and LM4140-1.250, and 5V for all other voltage options. V OUT IN Total Current ( Supply Voltage S(OFF) Spectral Noise Density (0.1Hz to 10Hz) Ground Current ...

Page 8

LM4140 Typical Performance Characteristics C = 1µ 3.0V for LM4140-1.024 and LM4140-1.250, and 5V for all other voltage options. V OUT IN Load Regulation vs Temperature Line Regulation vs Temperature Short Circuit Current vs Temperature www.national.com Unless otherwise ...

Page 9

Application Hints INPUT CAPACITORS Although not always required, an input capacitor is recom- mended. A supply bypass capacitor on the input assures that the reference is working from a source with low impedance, which improves stability. A bypass capacitor can ...

Page 10

Application Hints (Continued) MULTILAYER CERAMIC CAPACITORS Surface-mountable multilayer ceramic capacitors may be an attractive choice because of their relatively small physical size and excellent RF characteristics. However, they sometimes have an ESR values lower than the minimum required by the ...

Page 11

Application Hints (Continued) 10107934 FIGURE 5. Suggested PCB Layout with Slot 11 10107935 www.national.com ...

Page 12

Typical Application Circuits Boosted Output Current Boosted Ouput Current with Current Limiter Complimentary Outputs * Low Noise Op Amp such as OP-27 www.national.com Voltage Reference with Force and Sense Output Precision Programmable Current Source 10107915 Precision DAC Reference 10107922 10107919 ...

Page 13

Typical Application Circuits (Continued) Strain Gauge Conditioner for 350Ω Bridge FIGURE 6. 13 10107937 10107926 www.national.com ...

Page 14

Typical Application Circuits www.national.com (Continued) FIGURE 7. 14 10107927 ...

Page 15

... BANNED SUBSTANCE COMPLIANCE National Semiconductor manufactures products and uses packing materials that meet the provisions of the Customer Products Stewardship Specification (CSP-9-111C2) and the Banned Substances and Materials of Interest Specification (CSP-9-111S2) and contain no ‘‘Banned Substances’’ as defined in CSP-9-111S2. ...

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