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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| AN-242: Application Note 242 Applying a New Precision Op Amp |
383
Kbytes |
4-Oct-04 |
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| AN-225: Application Note 225 IC Temperature Sensor Provides Thermocouple Cold-Junction Compensation |
89
Kbytes |
2-Oct-02 |
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| AN-275: Application Note 275 CMOS D/A Converters Match Most Microprocessors |
127
Kbytes |
2-May-04 |
Download |
| AN-240: Application Note 240 Wide-Range Current-to-Frequency Converters |
126
Kbytes |
3-Oct-02 |
Download |
| AN-272: Application Note 272 Op Amp Booster Designs |
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 |
Download |
| 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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