2A, 6.5V, Ultra Low Noise, Ultra Low Dropout Linear Regulator

文件：447.92 Kbytes 页数：20 Pages

RICHTEK

立锜科技

VERSATILE SINGLE CHIP TELEPHONE

GENERAL DESCRIPTION The SA2532 is a CMOS integrated circuit that contains all the functions needed to form a high performance electronic telephone. The device incorporates LD/MF dialling, melody generation, ring frequency discrimination and a high quality speech circuit. A RAM is on chip for a

文件：583 Kbytes 页数：22 Pages

SAMES

SINGLE CHIP TELEPHONE INTERFACE FOR KEYBOARD ENTRY VIA uC

Scope This application note describes a simple interface for keyboard entry to the SA253x family via a Microcontroller. It also includes hardware description , flowchart and a software example based on the 80Cxx - family of Microcontrollers. Key Features • only 5 outputs and 1 input required fr

文件：71.55 Kbytes 页数：13 Pages

SAMES

SINGLE CHIP TELEPHONE POWER EXTRACTION FOR EXTERNAL LOADS

Scope This application note describes a simple add-on circuit for extracting current to supply external loads. It also includes hardware description ,schematic and Vout/Iout curves. Key Features • Only few additional low-cost components necessary • Can drive line currents up to ILine-5mA (=15

文件：36.48 Kbytes 页数：4 Pages

SAMES