Precision 80-µV-offset op amp has 76V input range

August 07, 2013 // By Graham Prophet
LT6015 is a single “Over-the-Top” operational amplifier notable for precision over a 0V to 76V input common-mode voltage range. It incorporates multiple built-in fault tolerant features, resulting in no-compromise performance over wide operating supply and temperature ranges.

Over-the-Top inputs provide true operation well beyond the V rail. The LT6015 functions normally with its inputs up to 76V above V-, independent of whether V+ is 3V or 50V. Input offset voltage is 80 µV max, input bias current is 5 nA and low frequency noise is 0.5 µVP-P, making the LT6015 suitable for a wide range of precision industrial, automotive and instrumentation applications. Fault protection modes guard against negative transients, reverse battery and other conditions, making the LT6015 ideal fit for applications where the amplifier is at the analogue interface to another board, and for high-side and low-side current sensing. Power demand is 315µA, CMRR and PSRR are 126dB, gain-bandwidth product is 3.2 MHz and voltage gain is 1000V/mV. It tolerates reverse battery to 50V and is free from phase reversal and supply sequencing problems. It comes in a 5-lead SOT-23 package and is fully specified over -40°C to 85°C, -40°C to 125°C, and -55°C to 150°C temperature ranges. Prices start at $1.53(1000).

Linear Technology; www.linear.com/product/LT6015