Toshiba has released an micro-power CMOS operational amplifier, drawing a maximum of 600nA and typically 270nA (1.5V supply, -40 to 105°C).

Toshiba-TC75S102F-cmos-opamp

Called TC75S102F, it will run from supplies between 1.5V and 5.5V and is rail-to-rail on both input and output. Unusually for an op-amp, no input excursion outside the rails is allowed at all.

“Operational amplifiers have a multitude of uses including boosting weak signals from sensors,” said the company. “To support longer use between charges of battery-operated equipment, including IoT edge devices and other mobile devices such as handheld POS terminals they must also deliver lower current consumption.”

At 5V consumption is 0.35µA typ and  0.7µA max – again across -40 to 105°C).

Apart from output current, specs are similar at 1.5V and 5V.

Maximum input offset voltage ±1.3mV (Vdd=1.5V) rising to ±1.7mV at 5V.

Unitiy gain cross frequency is 500Hz at 1.5V and 630Hz at 5V, while slew rate is 370mV/ms (at 1.5V (‘370V/s’ looked a little odd…)) or 450mV/ms at 5V. Phase margin is 53° (1.5V) or 63° (5V).

Common-mode rejection ratio (CMRR) is typically 80dB at 1.5 or 5V, and minimum at 53dB at 1.5V. Supply rejection is also typically 80dB at 1.5V and not quoted in the data sheet at 5V.

Open loop gain is typically 139dB at 1.5V (64dB min), dropping to 100dB at 5V (80dB min).

Typical output current is +600μA (source) and -400μA at 1.5V, but +11mA and -10mA at 5V.

Packaging is 2.9 x 1.6 x 1.1mm SOT-25.