公开(公告)号：EP1158382A1

公开(公告)日：2001-11-28

申请号：EP01304205.6

申请日：2001-05-10

Applicant: STMicroelectronics Limited

Inventor： Chowdhury, Vivek

IPC: G05F3/30

CPC classification number: G05F3/30

Abstract: A circuit for generating an output voltage which is proportional to temperature with a required gradient is disclosed. The circuit relies on the principle that the difference in the base emitter voltage of two bipolar transistors with differing areas, if appropriately connected, can result in a current which has a positive temperature coefficient, that is a current which varies linearly with temperature such that as the temperature increases the current increases. It is important to maintain a stable internal line voltage in the face of significant variations in a supply voltage to the circuit. This is achieved herein by providing control elements appropriately connected to a differential amplifier. The stable internal supply voltage can be used to power a subsequent stage of the circuit for fine control of the gradient of the voltage proportional to temperature.

Abstract translation: 公开了一种用于产生与所需梯度成正比的输出电压的电路。 该电路依赖于以下原理：如果适当连接，具有不同面积的两个双极晶体管的基极发射极电压的差异可导致具有正温度系数的电流，即具有随温度线性变化的电流，使得如 温度升高电流增加。 在面对电路的电源电压的显着变化的情况下，保持稳定的内部线路电压是重要的。 这通过提供适当地连接到差分放大器的控制元件来实现。 可以使用稳定的内部电源电压为电路的后续电路供电，以精确控制与温度成正比的电压梯度。

公开(公告)号：EP1158383B1

公开(公告)日：2006-10-04

申请号：EP01304207.2

申请日：2001-05-10

Applicant: STMicroelectronics Limited

Inventor： Chowdhury, Vivek

IPC: G05F3/30

CPC classification number: G05F3/30

公开(公告)号：EP1158382B1

公开(公告)日：2005-11-02

申请号：EP01304205.6

申请日：2001-05-10

Applicant: STMicroelectronics Limited

Inventor： Chowdhury, Vivek

IPC: G05F3/30

CPC classification number: G05F3/30

公开(公告)号：EP0646905B1

公开(公告)日：1999-04-07

申请号：EP94306901.3

申请日：1994-09-21

Applicant: STMicroelectronics Limited

Inventor： Chowdhury, Vivek

IPC: G09G3/30

CPC classification number: G09G3/2011 ,  G09G3/30 ,  G09G2310/0275 ,  G09G2310/0289 ,  H04N3/14

公开(公告)号：EP1158383A1

公开(公告)日：2001-11-28

申请号：EP01304207.2

申请日：2001-05-10

Applicant: STMicroelectronics Limited

Inventor： Chowdhury, Vivek

IPC: G05F3/30

CPC classification number: G05F3/30

Abstract: A circuit for generating an output voltage proportional to temperature with a required gradient, the circuit comprising a first stage arranged to generate a first voltage which is proportional to temperature with a predetermined gradient but which has a positive value when the temperature falls below zero and a second stage connected to the first stage and comprising a differential amplifier having a first input connected to receive the first voltage and a second input connected to receive a feedback voltage which is derived from an output signal of the differential amplifier via an offset circuit which introduces an offset voltage such that the output signal of the differential amplifier provides at an output node said output voltage which has a negative variation with negative temperatures.

Abstract translation: 一种用于产生具有所需梯度的与温度成比例的输出电压的电路，该电路包括第一级，其布置成产生与温度成比例的第一电压，其具有预定梯度，但是当温度低于零时具有正值， 第二级连接到第一级，并且包括具有连接以接收第一电压的第一输入的差分放大器和连接的第二输入，以接收从差分放大器的输出信号导出的反馈电压，该偏移电路引入 偏移电压使得差分放大器的输出信号在输出节点处提供具有负变化与负温度的所述输出电压。

公开(公告)号：EP1156403A1

公开(公告)日：2001-11-21

申请号：EP01304206.4

申请日：2001-05-10

Applicant: STMicroelectronics Limited

Inventor： Chowdhury, Vivek

IPC: G05F3/30

CPC classification number: G05F3/30 ,  Y10S323/907

Abstract: A circuit for generating an output voltage proportional to temperature with a required gradient, the circuit comprising a first stage arranged to generate a first voltage which is proportional to temperature with a predetermined gradient, the first stage comprising first and second bipolar transistors with different emitter areas having their emitters connected together and their bases connected across a bridge resistive element, wherein the collectors of the transistors are connected to an internal supply line via respective matched resistive elements such that the voltage across the bridge resistive element is proportional to temperature; a differential amplifier having its inputs connected respectively to said collectors, and its output connected to stabilisation circuitry connected between first and second power supply rails and an internal supply line which cooperates with the differential amplifier to maintain a stable voltage on the internal supply line despite variations between the first and second power supply rails; and a second stage which comprises a gain circuit connected to receive the first voltage for altering the predetermined gradient to match the required gradient, the gain circuit having as its voltage supply said stable voltage on the internal supply line.

Abstract translation: 一种用于在输出电压与所需的梯度产生与温度成比例电路，包括布置在第一级中的电路，以产生一个第一电压的所有其正比于温度与预定的梯度，所述第一级包括具有不同的发射极面积的第一和第二双极晶体管 其具有发射极连接在一起，并且跨桥电阻元件，worin晶体管的集电极在内部供电线经由respectivement匹配电阻元件检查确实过桥电阻元件上的电压是正比于温度与连接它们的碱基; 差动放大器具有分别连接至所述收集器的输入，并且其输出端连接到连接的第一和第二电源轨之间并内部电源线，其与差分放大器组织合作的保持，尽管变体的内部供给线提供稳定的电压稳定电路 第一和第二供电轨之间; 并且其包括被连接以接收所述第一电压，用于改变所述预定梯度，以匹配所需要的梯度的增益电路的第二级，其具有作为其电压源的增益电路上的所述内部电源线稳定的电压。