公开(公告)号：US20040167736A1

公开(公告)日：2004-08-26

申请号：US10374016

申请日：2003-02-25

Applicant: Microchip Technology Incorporated

Inventor： Kumen E. Blake ,  James B. Nolan

IPC: G06F019/00

CPC classification number: H03G3/001 ,  H03G3/3026 ,  H03G2201/103 ,  H03G2201/502

Abstract: A programmable gain amplifier (PGA) controlled through a serial communications interface are fabricated on an integrated circuit (IC). A multiplexer (MUX) may also be included on the IC. The serial communications interface controls the gain of the PGA, MUX channel selection, and other functions of the PGA. Status of the PGA may also be obtained through the serial communications interface. By using a serial communications interface, the pin count of the PGA IC package may be kept to a minimum.

Abstract translation: 通过串行通信接口控制的可编程增益放大器（PGA）在集成电路（IC）上制造。 多路复用器（MUX）也可以包括在IC上。 串行通信接口控制PGA的增益，MUX通道选择和PGA的其他功能。 也可以通过串行通信接口获得PGA的状态。 通过使用串行通信接口，可以将PGA IC封装的引脚数保持在最小值。