The TLV930x-Q1 is a 40V, rail-to-rail output operational amplifier with an input common-mode range that extends 100mV beyond V– and within 2V of V+ for normal operation. The device accomplishes this performance through a complementary input stage, using a P-channel differential pair. Additionally, a complementary N-channel differential pair has been included in parallel with the P-channel pair to eliminate common undesirable op amp behaviors, such as phase reversal.

The TLV930x-Q1 can operate with common mode ranges beyond 100mV of the top rail, but with reduced performance above (V+) – 2V. The N-channel pair is active for input voltages close to the positive rail, typically (V+) – 1V to 100mV above the positive supply. The P-channel pair is active for inputs from 100mV below the negative supply to approximately (V+) – 2V. There is a small transition region, typically (V+) –2V to (V+) – 1V in which both input pairs are on. This transition region can vary modestly with process variation, and within the transition region and N-channel region, many specifications of the op amp (including PSRR, CMRR, offset voltage, offset drift, noise and THD performance) can be degraded compared to operation within the P-channel region.