- 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 mV (typical) @1毫安
- 电源电流：230μA（典型值），
- Enable pins
- 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)
illustrate
The LM4140 series precision reference design combines low power consumption, high accuracy, low drift and noise in a small package.
The LM4140 is the industry's first quoted below-bandgap output voltage option.
The key to the LM4140's propulsion performance is the use of EEPROM registers and CMOS DAC temperature coefficient curvature correction and trimming in the final production test equipment output voltage accuracy.
The main advantage of this method is that it is much more economical than most other bandgap reference methods utilized with DAC resolution.
The LM4140's drive capabilities with low input voltage differential, low supply current, and output make this product ideal for battery-powered and portable applications.
The LM4140 is available in three grades (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, National Semiconductor contacted.
Specified device performance over the entire temperature range (0°C to +70°C) in a compact 8-pin SO package.
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- Portable, battery-powered device
- Instrumentation and test equipment
- Car
- Industrial process control
- Data acquisition system
- Medical devices
- Precision balance
- servo system
- Battery charging
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