发明名称 |
REFERENCE-VOLTAGE CIRCUIT |
摘要 |
Provided is a reference voltage circuit capable of adjusting an arbitrary output voltage to have arbitrary temperature characteristics. The reference voltage circuit includes: a reference current generating circuit configured to convert a difference between forward voltages of a plurality of PN junction elements into current to generate a first current; a current generating circuit configured to use the first current generated by the reference current generating circuit to generate a second current; and a voltage generating circuit including a first resistive element and a second resistive element, the first resistive element being configured to generate a first voltage having positive temperature characteristics when the first current flows through the first resistive element, the second resistive element being configured to generate a second voltage having negative temperature characteristics when the first current and the second current flow through the second resistive element. The reference voltage circuit outputs a reference voltage obtained by adding the first voltage to the second voltage. |
申请公布号 |
US2015002131(A1) |
申请公布日期 |
2015.01.01 |
申请号 |
US201414490399 |
申请日期 |
2014.09.18 |
申请人 |
Seiko Instruments Inc. |
发明人 |
TAKADA Kosuke;SUGIURA Masakazu |
分类号 |
G05F3/24;G05F3/26 |
主分类号 |
G05F3/24 |
代理机构 |
|
代理人 |
|
主权项 |
1. A reference voltage circuit, comprising:
a reference current generating circuit configured to convert a difference between forward voltages of a plurality of PN junction elements into current to generate a first current; a current generating circuit configured to use the first current generated by the reference current generating circuit to generate a second current; and a voltage generating circuit comprising a first resistor and a second resistor, the first resistor being configured to generate a first voltage having positive temperature characteristics when the first current flows through the first resistor, the second resistor being configured to generate a second voltage having negative temperature characteristics when the first current and the second current flow through the second resistor, wherein the reference voltage circuit outputs a reference voltage obtained by adding the first voltage to the second voltage. |
地址 |
Chiba-shi JP |