Ultra-low-power operational amplifiers provide low quiescent current

Texas Instruments TLV240x-Q1 Ultra-Low Power Op-Amps are a family of high voltage (16V) nano power op-amps. The device has an impressively low quiescent current of only 880nA (typical) and is excellent for battery-powered or 'always-on' applications, including electric vehicle monitoring and protection applications. Reverse battery protection shields the amplifier against an overcurrent condition due to incorrect battery installation. For harsh environments, the inputs can be taken 5V over the positive supply rail with no damage to the device.

The low supply current is coupled with extremely low input bias currents, enabling them to be used with mega-Ohm resistors, making them ideal for portable, long active-life applications. DC accuracy is assured with a low typical offset voltage of 390µV, CMRR of 120dB, and minimum open-loop gain of 130V/mV at 2.7V. The supply voltage reaches from 2.5V to 16V, with electrical characteristics defined at 2.7V, 5V, and 15V. The 2.5V operation makes it compatible with Li-Ion battery-powered systems and many micro-power microcontrollers, including the company’s MSP430 and MSP432.

The single-channel TLV2401-Q1 is available in a five-pin SOT-23 package. The dual-channel TLV2402-Q1 is available in an eight-pin VSSOP package. Both packages are fully specified from –40C to 125C.