The Pros and Cons of MLCC Downsizing Written By: Frank Hodgkinson | Maureen Strawhorne Abstract: As integrated circuits (ICs) continue to pack more functionality into smaller packages, the need for bulk off-chip capacitance remains. In resonant circuits, such as phase-lock-loops (PLLs) and switching regulators, precision class one ceramic capacitor may be required. Such capacitors must maintain a tight capacitance range over process, voltage, and temperature variation (PVT) for the host IC to meet its performance specifications. In contrast, class two ceramic capacitors are required for nearly every IC in the form of decoupling and bypass capacitance. They may also be found in amplifier circuits, simple filters, and linear regulators where their function is less dependent on tightly specified impedance requirements.
The Application of Capacitors in Power Supply Regulator Circuits Written By: Rick Liu Abstract: Advancements in electronic technology over the last decade have led to smarter consumer electronics. As devices become smarter, the components used to power them are shrinking, resulting in small, but incredibly powerful devices — ones small enough to fit inside a pocket or around a wrist. With these smaller, denser designs, it can be impossible to separate analog and digital domains in the layout, as best practices used to dictate years ago. Today, design engineers are compelled to use many capacitors in the power network to attenuate high-frequency digital noise. Circuits are designed to expect pure, clean power without noise that will impact analog circuits.
MLCC & TANTALUMINTERCHANGEABILITY Tantalum chip and Hi CV MLCC have a large degree of overlap in available capacitance ratings in common footprints. As MLCC production increased, many applications converted from tantalum to MLCC for many filtering, bypass, and hold-up applications. With the increasing demands seen for low voltage digital applications, tantalum electrolytic technologies have become a first choice for MLCC substitution. AVX is a leading international manufacturer and supplier of a wide range of advanced electronic components, including: capacitors, inductors, filters, and circuit protection devices. The AVX tantalum electrolytic division has maintained a leadership position in automotive, industrial, medical, space, military, consumer electronics, communications, and transportation markets for nearly 50 years. Maximum Available Capacitance by Case Size (6.3V): IPC has