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Details, datasheet, quote on part number:LM4140ACMX-4.1
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| Part: | LM4140ACMX-4.1 |
| Category: | Power Management => Voltage References |
| Description: | LM4140 - Precision Micropower Low Dropout Voltage Reference, Package: Soic Narrow, Pin Nb=8 |
| Company: | National Semiconductor Corporation |
| Datasheet: | Download LM4140ACMX-4.1 datasheet File size : 450 kB |
| Request For quote: | Find where to buy LM4140ACMX-4.1
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Datasheet text preview:
LM4140 High Precision Low Noise Low Dropout Voltage Reference
July 2000
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 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.
Features
n n n n n n n n n 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 n Custom voltages from 0.5V to 4.5V n Temperature range (0°C to 70°C)
Applications Summary
n n n n n n n n n Portable, battery powered equipment Instrumentation and test equipment Automotive Industrial process control Data acquisition systems Medical equipment Precision scales Servo systems Battery charging
Typical Application
Typical Temperature Coefficient (Sample of 5 Parts)
DS101079-1
COUT, Output bypass capacitor. See text for selection detail.
DS101079-23
Refer to the Ordering Information Table in this Data Sheet for Specific Part Number
© 2000 National Semiconductor Corporation
DS101079
www.national.com
LM4140
Ordering Information
Temperature Range (0°C to 70°C) LM4140 Supplied as 95 Units, Tape and Reel LM4140ACM-1.0 LM4140ACM-1.2 LM4140 Supplied as 2500 Units, Tape and Reel LM4140ACMX-1.0 LM4140ACMX-1.2 LM4140ACMX-2.0 LM4140ACMX-2.5 LM4140ACMX-4.1 LM4140BCMX-1.0 LM4140BCMX-1.2 LM4140BCMX-2.0 LM4140BCMX-2.5 LM4140BCMX-4.1 LM4140CCMX-1.0 LM4140CCMX-1.2 LM4140CCMX-2.0 LM4140CCMX-2.5 LM4140CCMX-4.1
Initial Output Voltage Accuracy @ 25°C and Temperature Coefficient
0.1%, 3 ppm/°C max (A grade)
LM4140ACM-2.0 LM4140ACM-2.5 LM4140ACM-4.1 LM4140BCM-1.0 LM4140BCM-1.2
0.1%, 6 ppm/°C max (B grade)
LM4140BCM-2.0 LM4140BCM-2.5 LM4140BCM-4.1 LM4140CCM-1.0 LM4140CCM-1.2
0.1%, 10 ppm/°C max (C grade)
LM4140CCM-2.0 LM4140CCM-2.5 LM4140CCM-4.1
Connection Diagram
8-Lead Surface Mount (M)
DS101079-2
Top View See NS Package Number M08A
Pin Functions
Vref (Pin 6): Input (Pin 2): Ground (Pins 1, 4, 7, 8): Enable (Pin 3): NC (Pin 5): Reference Output. Capable of sourcing up to 8mA. Positive Supply. Negative Supply or Ground Connection. These pins must be connected to ground. Pulled to input for normal operation. Forcing this pin to ground will turn-off the output. This pin must be left open.
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2
LM4140
Absolute Maximum Ratings (Note 1)
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 (TA = 25°C) (Note 2) ESD Susceptibility (Note 3) Human Body Model Machine Model -0.3V to 5.6V Indefinite 345mW 2 kV 200V
Lead Temperature: Soldering, (10 sec.)
+260°C
Operating Range (Note 1)
Storage Temperature Range Ambient Temperature Range Junction Temperature Range -65°C to +150°C 0°C to 70°C 0°C to 80°C
LM4140 Electrical Charateristics
Unless otherwise specified, VIN = 3.0V for the LM4140-1.024 and LM4140-1.250, VIN = 5.0V for all other voltage options, VEN = VIN. COUT = 1µF (Note 4), ILOAD = 1mA, TA = TJ = 25°C. Limits with standard typeface are for TA = 25°C, and limits in boldface type apply over 0°C to 70°C temperature range. Symbol Parameter Output Voltage Initial Accuracy (Note 7) LM4140B-1.024 LM4140B-1.250 LM4140B-2.048 LM4140B-2.500 LM4140B-4.096 LM4140C-1.024 LM4140C-1.250 LM4140C-2.048 LM4140C-2.500 LM4140C-4.096 TCVREF/°C Temperature Coefficient: A Grade B Grade C Grade Line Regulation 1.024V and 1.250V options VREF/VIN All other voltage options Load Regulation All other voltage options VREF/ILOAD 4.096V Option VREF VREF Long-Term Stability Thermal Hysteresis (Note 8) 1000 Hrs 0°C TA + 70°C 5 60 20 Vref + 200mV VIN 5.5V 1 mA ILOAD 8mA 1 20 150 35 150 ppm ppm ppm/mA 20 1.8V VIN 5.5V 50 300 350 200 250 ppm/V 0°C TA + 70°C Conditions Min (Note 6) Typ (Note 5) Max (Note 6) Units
± 0.1
%
VREF
± 0.1
3 6 10
ppm/°C
3
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