- High initial accuracy: 0.1%
- Ultra-low noise
- Low temperature coefficient: 3 ppm/° C (Class A)
- Low voltage operation: 1.8V
- SO-8 package
- Low dropout voltage: 20 millivolts (typical) @1毫安
- Supply Current: 230μA (typical),
- Enable pin
- Output voltage options: 1.024V, 1.250V, 2.048V, 2.500V and 4.096V
- Customized from 0.5V to 4.5V
- Temperature range (0 °C to 70 °C)
illustrate
The design of the precision series referencing the LM4140 combines low power consumption with high precision, low drift and noise in a small package.
The LM4140 is the industry's first reference for lower output voltage options than bandgap voltages.
The key to the performance of the LM4140 is the temperature coefficient curvature correction of the EEPROM registers and CMOS DAC and the output voltage accuracy tuning of the device used in the final production test.
The main advantage of this approach is that the resolution is much higher than the most economical method that can be utilized with other bandgap references of existing DACs.
The low input and dropout voltage, low supply current, and output capability of the LM4140 driver make this product ideal for battery-powered and portable applications.
The LM4140 is available in three levels (A, B, C) with an initial accuracy of 0.1% and a temperature coefficient of 3, 6 and 10 ppm/°C. For lower temperature coefficients, contact National Semiconductor.
The device performs beyond the specified temperature range (0°C to +70°C) and is packaged in a compact 8-pin package.
For other output voltage options, from 0.5V to 4.5V, National Semiconductor is in touch.
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- Portable, battery-powered device
- Instrumentation and test equipment
- Car
- Industrial process control
- Data acquisition system
- Medical equipment
- Precision balances
- Servo system
- Battery charging
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