Skyworks Solutions, Inc.
Control circuitry for silicon-on-insulator chip

Abstract:

Disclosed herein are non-limiting examples of charge pumps that reduce the introduction of noise into a circuit in which they are implemented and/or lower the output impedance when providing certain voltages (e.g., negative voltage generators). The disclosed technologies utilize a plurality of smaller charge pumps (or charge pump units) working in parallel that operate on different clock phases rather than using a single charge pump with a relatively large flying capacitor or a plurality of charge pumps in series. This can, for example, reduce spurious signals or spurs that arise due at least in part to the characteristics of the clock signal. The disclosed technologies may be particularly advantageous for SOI-based components and circuits.