JPS5715508A - Monolithic integrated circuit - Google Patents
Monolithic integrated circuitInfo
- Publication number
- JPS5715508A JPS5715508A JP8921880A JP8921880A JPS5715508A JP S5715508 A JPS5715508 A JP S5715508A JP 8921880 A JP8921880 A JP 8921880A JP 8921880 A JP8921880 A JP 8921880A JP S5715508 A JPS5715508 A JP S5715508A
- Authority
- JP
- Japan
- Prior art keywords
- filter
- capacitor
- misfetq
- turns
- power supply
- Prior art date
- Legal status (The legal status is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the status listed.)
- Pending
Links
Abstract
PURPOSE: To reduce the cost and to achieve high density mounting, by using a switched capacitor filter formed in a monolithic IC as a power supply ripple rejecting filter.
CONSTITUTION: A bias voltage being an input voltage is applied to a capacitor C1 for charging by a switched capacitor filter 5, when a MISFETQ1 turns on, and the input voltage stored in this capacitor C1 is supplied to an operational amplifying circuit OP when a MISFETQ2 turns on. The power supply ripple rejecting operation is made by reason that the filter characteristics are determined by the capacitance ratio C1/C2 and the pulse signal frequency (fs) and the attenuated frequency band is a low frequency.
COPYRIGHT: (C)1982,JPO&Japio
Priority Applications (1)
Application Number | Priority Date | Filing Date | Title |
---|---|---|---|
JP8921880A JPS5715508A (en) | 1980-07-02 | 1980-07-02 | Monolithic integrated circuit |
Applications Claiming Priority (1)
Application Number | Priority Date | Filing Date | Title |
---|---|---|---|
JP8921880A JPS5715508A (en) | 1980-07-02 | 1980-07-02 | Monolithic integrated circuit |
Publications (1)
Publication Number | Publication Date |
---|---|
JPS5715508A true JPS5715508A (en) | 1982-01-26 |
Family
ID=13964577
Family Applications (1)
Application Number | Title | Priority Date | Filing Date |
---|---|---|---|
JP8921880A Pending JPS5715508A (en) | 1980-07-02 | 1980-07-02 | Monolithic integrated circuit |
Country Status (1)
Country | Link |
---|---|
JP (1) | JPS5715508A (en) |
Cited By (1)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
JPS60158706A (en) * | 1984-01-29 | 1985-08-20 | Rohm Co Ltd | Bias power supply |
-
1980
- 1980-07-02 JP JP8921880A patent/JPS5715508A/en active Pending
Cited By (1)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
JPS60158706A (en) * | 1984-01-29 | 1985-08-20 | Rohm Co Ltd | Bias power supply |
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