The LM139 series consists of four independent precision voltage comparators with an offset voltage specification as low as 2 mV max for all four comparators. These were designed specifically to operate from a single power supply over a wide range of voltages. Operation from split power supplies is also possible and the low power supply current drain is independent of the magnitude of the power supply voltage. These comparators also have a unique characteristic in that the input common-mode voltage range includes ground, even though operated from a single power supply voltage.
Application areas include limit comparators, simple analog to digital converters; pulse, squarewave and time delay generators; wide range VCO; MOS clock timers; multivibrators and high voltage digital logic gates. The LM139 series was designed to directly interface with TTL and CMOS. When operated from both plus and minus power supplies, they will directly interface with MOS logic- where the low power drain of the LM339 is a distinct advantage over standard comparators.
| Title | Size in Kbytes |
Date |
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| AN-298: Application Note 298 Isolation Techniques for Signal Conditioning |
379 Kbytes |
2-Oct-02 |
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| AN-C: Application Note C V/F Converter ICs Handle Frequency-to-Voltage Needs |
187 Kbytes |
3-Oct-02 |
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4-Oct-04 |
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89 Kbytes |
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127 Kbytes |
2-May-04 |
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| AN-240: Application Note 240 Wide-Range Current-to-Frequency Converters |
126 Kbytes |
3-Oct-02 |
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382 Kbytes |
2-Oct-02 |
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| AN-295: Application Note 295 A High Performance Industrial Weighing System |
117 Kbytes |
4-Oct-04 |
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| AN-D: Application Note D Versatile Monolithic V/Fs can Compute as Well as Convert with High Accuracy |
248 Kbytes |
3-Oct-02 |
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| AN-285: Application Note 285 An Acoustic Transformer Powered Super‐High Isolation Amplifier |
172 Kbytes |
4-Oct-04 |
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| AN-247: Application Note 247 Using the ADC0808/ADC0809 8-Bit µP Compatible A/D Converters with 8-Channel Analog Multiplexer |
547 Kbytes |
3-Oct-02 |
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| AN-256: Application Note 256 Circuitry for Inexpensive Relative Humidity Measurement |
119 Kbytes |
2-Oct-02 |
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| AN-258: Application Note 258 Data Acquisition Using the ADC0816 and ADC0817 8-Bit A/D Converter with On-Chip 16 Channel Multiplexer |
683 Kbytes |
4-Oct-04 |
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| AN-673: 2-Way Multiplexed LCD Drive and Low Cost A/D-Converter Using V/F Techniques with COP8 Microcontrollers |
526 Kbytes |
5-Aug-95 |
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| AN-284: Application Note 284 Single-Supply Applications of CMOS MICRODACs |
121 Kbytes |
3-Oct-02 |
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| AN-210: Application Note 210 New Phase-Locked-Loops Have Advantages as Frequency to Voltage Converters (and more) |
339 Kbytes |
3-Oct-02 |
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| AN-265: Application Note 265 An Electronic Watt-Watt-Hour Meter |
185 Kbytes |
3-Oct-02 |
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| AN-301: Application Note 301 Signal Conditioning for Sophisticated Transducers |
579 Kbytes |
2-Oct-02 |
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