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1. 发明授权

US06292050B1 Current and temperature compensated voltage reference having improved power supply rejection 有权
标题翻译：电流和温度补偿电压基准具有改进的电源抑制
公开(公告)号：US06292050B1
公开(公告)日：2001-09-18
申请号：US09260206
申请日：1999-03-01
申请人： Michael W. Dooley , Terrence L. Marshall , William J. Linder , Suneel Arora
发明人： Michael W. Dooley , Terrence L. Marshall , William J. Linder , Suneel Arora
IPC分类号： G05F110
CPC分类号： G05F3/245 , A61N1/3706
摘要： A current and temperature compensated voltage reference circuit uses a power supply voltage as low as 1.3 Volts. A folded-cascode amplifier measures the temperature dependent voltages provided by first and second bias circuits, each including two series-coupled diodes or diode-connected bipolar junction transistors (BJTs), and provides a resulting proportional to absolute temperature (PTAT) current through a cascode-protected output transistor. A voltage reference circuit uses a PTAT current through a resistor to create a PTAT voltage in series with a diode-voltage. The resistor value is adjusted until the sum of these voltages is equal to the bandgap voltage of silicon, providing a temperature compensated voltage reference. The reference circuit is suitable for use with an implantable cardiac rhythm management system having a battery that provides a power supply voltage varying approximately between 1.3 Volts and 3.25 Volts. Cascode-protected current mirrors further improve rejection of such variations in the power supply voltage.
摘要翻译：电流和温度补偿电压参考电路使用低至1.3伏的电源电压。折叠共源共栅放大器测量由第一和第二偏置电路提供的与温度相关的电压，每个电压包括两个串联耦合的二极管或二极管连接的双极结型晶体管（BJT），并提供与绝对温度（PTAT）电流成比例的结果共源共栅保护的输出晶体管。电压参考电路使用通过电阻器的PTAT电流来产生与二极管电压串联的PTAT电压。调整电阻值，直到这些电压之和等于硅的带隙电压，提供温度补偿电压基准。参考电路适用于具有电池的可植入心律管理系统，该电池提供约1.3伏至3.25伏变化的电源电压。串联保护的电流镜进一步改善了对电源电压的这种变化的抑制。

2. 发明授权

US06381491B1 Digitally trimmable resistor for bandgap voltage reference 有权
标题翻译：数字可调电阻，用于带隙电压参考
公开(公告)号：US06381491B1
公开(公告)日：2002-04-30
申请号：US09642287
申请日：2000-08-18
申请人： Keith R. Maile , Terrence L. Marshall , William J. Linder
发明人： Keith R. Maile , Terrence L. Marshall , William J. Linder
IPC分类号： A61N100
CPC分类号： A61N1/08 , G05F3/30
摘要： A bandgap voltage reference circuit implemented on an integrated circuit chip in which a proportional-to-temperature current is controlled by a current controlling resistor and converted to a voltage by a voltage controlling resistor, with either or both of the resistors being an integrated on-chip digitally trimmable resistor. The reference circuit is particularly suitable for application to circuitry used in implantable medical devices where off-chip resistors provide a channel by which noise can interfere with the operation of the circuit. The on-chip digitally trimmable resistor is implemented in accordance with the invention by a programmable switch matrix connected to a resistor network.
摘要翻译：一种在集成电路芯片上实现的带隙电压参考电路，其中比例温度电流由电流控制电阻器控制并通过电压控制电阻器转换成电压，其中一个或两个电阻器是集成在线的，芯片数字可调电阻。参考电路特别适用于可植入医疗设备中使用的电路，其中片外电阻器提供噪声可能干扰电路的操作的通道。片上可数字可调电阻器根据本发明通过连接到电阻器网络的可编程开关矩阵来实现。

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