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LMC6442AIM Datasheet(PDF) 1 Page - National Semiconductor (TI) |
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LMC6442AIM Datasheet(HTML) 1 Page - National Semiconductor (TI) |
1 / 16 page LMC6442 Dual Micropower Rail-to-Rail Output Single Supply Operational Amplifier General Description The LMC6442 is ideal for battery powered systems, where very low supply current (less than one microamp per ampli- fier) and Rail-to-Rail output swing is required. It is character- ized for 2.2V to 10V operation, and at 2.2V supply, the LMC6442 is ideal for single (Li-Ion) or two cell (NiCad or alkaline) battery systems. The LMC6442 is designed for battery powered systems that require long service life through low supply current, such as smoke and gas detectors, and pager or personal communi- cations systems. Operation from single supply is enhanced by the wide com- mon mode input voltage range which includes the ground (or negative supply) for ground sensing applications. Very low (5fA, typical) input bias current and near constant supply current over supply voltage enhance the LMC6442’s perfor- mance near the end-of-life battery voltage. Designed for closed loop gains of greater than plus two (or minus one), the amplifier has typically 9.5 KHz GBWP (Gain Bandwidth Product). Unity gain can be used with a simple compensation circuit, which also allows capacitive loads of up to 300 pF to be driven, as described in the Application Notes section. For compact assembly the LMC6442 is available in the MSOP 8 pin package, about one half the size required by the SOIC 8 pin package. 8 pin DIP and 8 pin SOIC are also available. Features (Typical, V S = 2.2V) n Output Swing to within 30 mV of supply rail n High voltage gain 103 dB n Gain Bandwidth Product 9.5 KHz n Guaranteed for: 2.2V, 5V, 10V n Low Supply Current 0.95 µA/Amplifier n Input Voltage Range −0.3V to V + -0.9V n 2.1 µW/Amplifier Power consumption n Stable for A V ≥+2 or A V ≤ −1 Applications n Portable instruments n Smoke/gas/CO/fire detectors n Pagers/cell phones n Instrumentation n Thermostats n Occupancy sensors n Cameras n Active badges Connection Diagram 10006440 Top View August 2000 © 2004 National Semiconductor Corporation DS100064 www.national.com |
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