ALD4201/ALD4202M is a quad high-precision SPSTCMOS analog switch specifically developed for 3 to 12 volt applications where low charge injection and low leakage currents are important analog switch operating characteristics. The main features include precision matching, charge compensation circuitry, fast switching, low on-resistance and micropower consumption. ALD4201 operates in break-before-make switching whereas the ALD4202M operates in make-before-break switching. ALD4201/ALD4202M are designed for precision applications such as charge amplifiers, sample and hold amplifiers, data converter switches, and programmable gain amplifiers. These switches are also excellent for general purpose switching applications for micropower battery operated systems.