
National P/N LM4140 - Precision Micropower Low Dropout Voltage Reference
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Features
Applications
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.
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High initial accuracy: 0.1%
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Ultra low noise
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Low Temperature Coefficient: 3 ppm/°C (A grade)
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Low voltage operation: 1.8V
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SO-8 package
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Low dropout voltage: 20 mV (typ) @ 1mA
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Supply Current: 230 A (typ), [Less_Than_Or_Equal] 1 A disable
mode
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Enable pin
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Output voltage options: 1.024V, 1.250V, 2.048V, 2.500V, and
4.096V
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Custom voltages from 0.5V to 4.5V
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Temperature range (0°C to 70°C)
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Portable, battery powered equipment
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Instrumentation and test equipment
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Automotive
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Industrial process control
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Data acquisition systems
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Medical equipment