公开(公告)号：US09239583B2

公开(公告)日：2016-01-19

申请号：US13899829

申请日：2013-05-22

Applicant: STMICROELECTRONICS S.R.L.

Inventor： Giuseppe Castagna ,  MaurizioFrancesco Perroni

IPC: G05F1/10 ,  G05F3/02 ,  G05F1/46 ,  G11C5/14 ,  G11C16/30 ,  G11C29/02

CPC classification number: G05F1/468 ,  G11C5/147 ,  G11C16/30 ,  G11C29/021

Abstract: A current-generator circuit is for generation of an output current of a value that is configurable as a function of a configuration signal. The circuit may have a first reference resistor element traversed by an intermediate current, the value of which is a function of a reference current, for supplying a first reference voltage. The circuit may also include a resistive divider stage receiving the configuration signal and supplying a second reference voltage as a function of the first reference voltage and of the configuration signal. A second reference resistor element supplies, as a function of the second reference voltage (Vref2), the output current on the output terminal. The value of resistance of the second reference resistor element may be matched to a respective value of resistance of the first reference resistor element.

Abstract translation: 电流发生器电路用于产生可配置为配置信号的函数的值的输出电流。 电路可以具有用于提供第一参考电压的中间电流穿过的第一参考电阻器元件，其中值为参考电流的函数。 电路还可以包括电阻分压器级，其接收配置信号并提供作为第一参考电压和配置信号的函数的第二参考电压。 第二参考电阻元件作为第二参考电压（Vref2）的函数提供输出端子上的输出电流。 第二参考电阻元件的电阻值可以与第一参考电阻元件的电阻的相应值相匹配。