LMC6442 Datasheet | National Semiconductor

Description The LMC6442 is ideal for battery powered systems, where very low supply current (less than one microamp per amplifier) and Rail-to-Rail output swing is required. It is characterized for 2.2V to 10V operation, and at 2.2V supply, the LMC6442 is ideal for single (Li-Ion) or two cell (Ni Cad 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 munications systems. Operation from single supply is enhanced by the wide mon mode input voltage range which includes the ground (or negative supply) for ground sensing applications. Very low (5f A, typical) input bias current and near constant supply current over supply voltage enhance the LMC6442’s performance 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 pensation circuit, which also allows capacitive loads of up to 300 p F to be driven, as described in the Application Notes section. For pact 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. Key Specifications Features (Typical, VS = 2.2V) n n n n n n n n Output Swing to within 30 m V of supply rail High voltage gain Gain Bandwidth Product Guaranteed for: Low Supply Current Input Voltage Range Power consumption Stable for AV ≥+2 or AV ≤ - 1 103 d B 9.5 KHz 2.2V, 5V, 10V 0.95 µA/Amplifier - 0.3V to V+ -0.9V 2.1 µW/Amplifier Applications n n n n n n n n Portable instruments Smoke/gas/CO/fire detectors Pagers/cell phones Instrumentation Thermostats Occupancy sensors Cameras Active badges Connection Diagram DS100064-40 Top View Ordering Information Package 8-pin SO-8 Temperature Range Industrial - 40˚C to +85˚C LMC6442AIM, LMC6442IM Military - 55˚C to...