The LM111 is a voltage comparator that has input currents nearly a thousand times lower than devices such as the LM106 or LM710. It is also designed to operate over a wider range of supply voltages: from standard ±15V op amp supplies down to the single 5V supply used for IC logic. The output is compatible with RTL, DTL and TTL as well as MOS circuits. Further, it can drive lamps or relays, switching voltages up to 50V at currents as high as 50 mA.
Both the inputs and the output of the LM111 can be isolated from system ground, and the output can drive loads referred to ground, the positive supply or the negative supply. Offset balancing and strobe capability are provided and outputs can be wire ORed. Although slower than the LM106 and LM710 (200 ns response time vs 40 ns) the device is also much less prone to spurious oscillations. The LM111 has the same pin configuration as the LM106 and LM710.
■ Available with radiation guaranteed
— High Dose Rate 50 krad(Si)
— Low Dose and ELDRS Free 100 krad(Si)
■ Operates from single 5V supply
■ Input current: 200 nA max. over temperature
■ Offset current: 20 nA max. over temperature
■ Differential input voltage range: ±30V
■ Power consumption: 135 mW at ±15V
■ Power supply voltage, single 5V to ±15V
■ Offset voltage null capability
■ Strobe capability