Features
Small SOT23-5 package |
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Low dropout voltage: |
120 mV Typ @ 1 mA |
High output voltage accuracy: |
0.2% |
Source and Sink current output: |
±5 mA |
Supply current: |
160 µA Typ. |
Low Temperature Coefficient: |
50 ppm/°C |
Enable pin |
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Fixed output voltages: |
1.8, 2.048, 2.5, 3.0, 3.3, 4.096 and 5.0V |
Industrial temperature Range: |
-40°C to +85°C |
(For extended temperature range, -40°C to 125°C, contact National Semiconductor) |
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General Description
The LM4120 is a precision low power low dropout bandgap voltage reference with up to 5 mA output current source and sink capability.
This series reference operates with input voltages as low as 2V and up to 12V consuming 160 µA (Typ.) supply current. More...
Applications
| | Portable, battery powered equipment |
| | Instrumentation and process control |
| | Automotive & Industrial |
| | Test equipment |
| | Data acquisition systems |
| | Precision regulators |
| | Battery chargers |
| | Base stations |
| | Communications |
| | Medical equipment |
| |
Typical Application
*click for larger image
| Parameters | Values |
| Initial Accuracy (+/-) Max |
0.2, 0.5 % |
| Reference Voltage |
1.8 V, 2.5 V, 5 V, 3 V, 4.096 V, 2.048 V, 3.3 V |
| Tempco, max (ppm/C) |
50 ppm |
| Input Min Voltage |
3.3 Volt |
| Input Max Voltage |
14 Volt |
| Dropout Voltage |
0.18 Volt |
| Quiescent Current |
0.16 mA |
| Output Current |
5 mA |
| Voltage Noise (rms) |
0.33 uV |
| Long Term Stability (ppm/1000hr) |
100 ppm |
| Temperature Min |
-40 deg C |
| Temperature Max |
85 deg C |
| Automotive |
Yes |
| PowerWise |
Yes |
Typical Performance
*click for larger image
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Also Recommended
| LM4050▲ | Lower Current Shunt Reference |
| LM4132▲ | SOT-23 Precision Series Reference |
| LM4140▲ | Ultra High Precision Reference |
Block Diagram
click for larger image
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