The Zero-Transistor IC, a New Plateau in IC Design

Abstract: We can apply a BiCMOS integrated circuit with only resistors and no transistors to solve a difficult design problem. The mythically perfect operational amplifier's gain and temperature coefficient are dependent on external resistor values. Maxim precision resistor arrays are manufactured together on a single die and then automatically trimmed, to ensure close ratio matching. This guarantees that the operational amplifier (op amp) gain and temperature coefficient are predictable and reliable, even with large production volumes.