Features: High initial accuracy: 0.1%
Ultra low noise
Low Temperature Coefficient: 3 ppm/˚C (A grade)
Low voltage operation: 1.8V
SO-8 package
Low dropout voltage: 20 mV (typ) @ 1mA
Supply Current: 230 µA (typ), 1 µA disable mode
Enable pin
Output voltage options: 1.024V, 1.250V, 2.048V, 2.500V,and 4.096V
Custom voltages from 0.5V to 4.5V
Temperature range (0˚C to 70˚C)Application Portable, battery powered equipment
Instrumentation and test equipment
Automotive
Industrial process control
Data acquisition systems
Medical equipment
Precision scales
Servo systems
Battery chargingPinout
Specifications
| Initial Accuracy (+/-) Max |
0.1 % |
| Reference Voltage |
2.5 V, 1.25 V, 4.096 V, 2.048 V, 1.024 V |
| Tempco, max (ppm/C) |
6, 3, 10 ppm |
| Input Min Voltage |
1.8, 2.283, 2.735, 4.366 Volt |
| Input Max Voltage |
5.5 Volt |
| Dropout Voltage |
0.195, 0.16 Volt |
| Quiescent Current |
0.23 mA |
| Output Current |
8 mA |
| Voltage Noise (rms) |
2.2 uV |
| Long Term Stability (ppm/1000hr) |
60 ppm |
| Temperature Min |
0 deg C |
| Temperature Max |
70 deg C |
| PowerWise |
Yes |
| View Using Catalog |
Maximum Voltage on any Input pin −0.3V to 5.6V
Output Short-Circuit Duration Indefinite
Power Dissipation (TA = 25˚C)
(Note 2) 345mW
ESD Susceptibility (Note 3)
Human Body Model 2kV
Machine Model 200V
Lead Temperature:
Soldering, (10 sec.) +260˚CDescriptionThe 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 economically with most methods utilized by other bandgap references.
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 coefficients. For even lower Tempco, contact National Semiconductor.
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, contact National Semiconductor.
Reliability Metrics
| Part Number |
Process |
EFR Reject |
EFR Sample Size |
PPM |
LTA Rejects |
LTA Device Hours |
FITS |
MTTF (Hours) |
| LM4140ACM-1.0 |
LFAST1 |
0 |
18610 |
0 |
0 |
2335000 |
2 |
662562625 |
| LM4140ACM-1.2 |
LFAST1 |
0 |
18610 |
0 |
0 |
2335000 |
2 |
662562625 |
| LM4140ACM-2.0 |
LFAST1 |
0 |
18610 |
0 |
0 |
2335000 |
2 |
662562625 |
| LM4140ACM-2.5 |
LFAST1 |
0 |
18610 |
0 |
0 |
2335000 |
2 |
662562625 |
| LM4140ACM-4.1 |
LFAST1 |
0 |
18610 |
0 |
0 |
2335000 |
2 |
662562625 |
| LM4140ACMX-2.5 |
LFAST1 |
0 |
18610 |
0 |
0 |
2335000 |
2 |
662562625 |
| LM4140ACMX-4.1 |
LFAST1 |
0 |
18610 |
0 |
0 |
2335000 |
2 |
662562625 |
| LM4140BCM-1.0 |
LFAST1 |
0 |
18610 |
0 |
0 |
2335000 |
2 |
662562625 |
| LM4140BCM-1.2 |
LFAST1 |
0 |
18610 |
0 |
0 |
2335000 |
2 |
662562625 |
| LM4140BCM-2.0 |
LFAST1 |
0 |
18610 |
0 |
0 |
2335000 |
2 |
662562625 |
| LM4140BCM-2.5 |
LFAST1 |
0 |
18610 |
0 |
0 |
2335000 |
2 |
662562625 |
| LM4140BCM-4.1 |
LFAST1 |
0 |
18610 |
0 |
0 |
2335000 |
2 |
662562625 |
| LM4140BCMX-1.0 |
LFAST1 |
0 |
18610 |
0 |
0 |
2335000 |
2 |
662562625 |
| LM4140BCMX-2.5 |
LFAST1 |
0 |
18610 |
0 |
0 |
2335000 |
2 |
662562625 |
| LM4140BCMX-4.1 |
LFAST1 |
0 |
18610 |
0 |
0 |
2335000 |
2 |
662562625 |
| LM4140CCM-1.0 |
LFAST1 |
0 |
18610 |
0 |
0 |
2335000 |
2 |
662562625 |
| LM4140CCM-1.2 |
LFAST1 |
0 |
18610 |
0 |
0 |
2335000 |
2 |
662562625 |
| LM4140CCM-2.0 |
LFAST1 |
0 |
18610 |
0 |
0 |
2335000 |
2 |
662562625 |
| LM4140CCM-2.5 |
LFAST1 |
0 |
18610 |
0 |
0 |
2335000 |
2 |
662562625 |
| LM4140CCM-4.1 |
LFAST1 |
0 |
18610 |
0 |
0 |
2335000 |
2 |
662562625 |
| LM4140CCMX-1.0 |
LFAST1 |
0 |
18610 |
0 |
0 |
2335000 |
2 |
662562625 |
| LM4140CCMX-1.2 |
LFAST1 |
0 |
18610 |
0 |
0 |
2335000 |
2 |
662562625 |
| LM4140CCMX-2.0 |
LFAST1 |
0 |
18610 |
0 |
0 |
2335000 |
2 |
662562625 |
| LM4140CCMX-2.5 |
LFAST1 |
0 |
18610 |
0 |
0 |
2335000 |
2 |
662562625 |
| LM4140CCMX-4.1 |
LFAST1 |
0 |
18610 |
0 |
0 |
2335000 |
2 |
662562625 |
Note: The Early Failure Rates (EFR) were calculated as point estimate PPM based on rejects and sample size for EFR. The Long Term Failure Rates were calculated at 60% confidence using the Arrhenius equation at 0.7eV activation energy and derating the assumed stress temperature of 150°C to an application temperature of 55°C.For more information on Reliability Metrics, please click here.
Application Notes
| Title |
Size in Kbytes |
Date |
|
| AN-1357: Application Note 1357 LM2744 Evaluation Board |
1794 Kbytes |
5-Oct-05 |
Download |
AN-1357 (Chinese): Application Note 1357 LM2744 Evaluation Board
|
388 Kbytes |
|
640){this.height=this.height*640/this.width;this.width=640;}' border="0" alt=" Connection Diagram"> |
| AN-1559: Application Note 1559 Practical RTD Interface Solutions |
215 Kbytes |
10-Oct-07 |
Download |
AN-1559 (Japanese): Application Note 1559 Practical RTD Interface Solutions
640){this.height=this.height*640/this.width;this.width=640;}' border="0" alt=" Connection Diagram"> |
251 Kbytes |
|
|
AN-1559 (Chinese): Application Note 1559 Practical RTD Interface Solutions
|
805 Kbytes |
|
640){this.height=this.height*640/this.width;this.width=640;}' border="0" alt=" Connection Diagram"> |
If you have trouble printing or viewing PDF file(s), see Printing Problems.
|
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 volt-age 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 reso-lution available with DACs than is available economically with most methods utilized by other bandgap references.
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.
LM4140 Data Sheet
