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The LMC6492/LMC6494 amplifiers were specifically developed for single supply applications that operate from −40°Cto +125°C. This feature is well-suited for automotive systems because of the wide temperature range. A unique design topology enables the LMC6492/LMC6494 common-mode voltage range to accommodate input signals beyond the rails.
This eliminates non-linear output errors due to input signals exceeding a traditionally limited common-mode voltage range. The LMC6492/LMC6494 signal range has a high CMRR of 82 dB for excellent accuracy in non-inverting circuit configurations.
The LMC6492/LMC6494 rail-to-rail input is complemented by rail-to-rail output swing. This assures maximum dynamic signal range which is particularly important in 5V systems. Ultra-low input current of 150 fA and 120 dB open loop gain provide high accuracy and direct interfacing with high impedance sources.
LMC6494 Maximum Ratings
ESD Tolerance (Note 2) ..................2000V Differential Input Voltage .......... ±Supply Voltage Voltage at Input/Output Pin ....(V+) + 0.3V, (V−) − 0.3V Supply Voltage (V+ − V−) ...............16V Current at Input Pin................... ±5 mA Current at Output Pin (Note 3) ............ ±30 mA Current at Power Supply Pin .............. 40 mA Lead Temp. (Soldering, 10 sec.)............ 260°C Storage Temperature Range ....... −65°C to +150°C Junction Temperature (Note 4) .............150°C
LMC6494 Features
` Rail-to-Rail input common-mode voltage range, guaranteed over temperature ` Rail-to-Rail output swing within 20 mV of supply rail, 100 kW load ` Operates from 5V to 15V supply ` Excellent CMRR and PSRR 82 dB ` Ultra low input current 150 fA ` High voltage gain (RL = 100 kW) 120 dB ` Low supply current (@ VS = 5V) 500 A/Amplifier ` Low offset voltage drift 1.0 V/°C