JPS56103766A - Integrating circuit - Google Patents
Integrating circuitInfo
- Publication number
- JPS56103766A JPS56103766A JP491080A JP491080A JPS56103766A JP S56103766 A JPS56103766 A JP S56103766A JP 491080 A JP491080 A JP 491080A JP 491080 A JP491080 A JP 491080A JP S56103766 A JPS56103766 A JP S56103766A
- Authority
- JP
- Japan
- Prior art keywords
- capacitor
- resistance
- loss component
- input terminal
- output terminal
- 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
Classifications
-
- G—PHYSICS
- G06—COMPUTING; CALCULATING OR COUNTING
- G06G—ANALOGUE COMPUTERS
- G06G7/00—Devices in which the computing operation is performed by varying electric or magnetic quantities
- G06G7/12—Arrangements for performing computing operations, e.g. operational amplifiers
- G06G7/18—Arrangements for performing computing operations, e.g. operational amplifiers for integration or differentiation; for forming integrals
- G06G7/184—Arrangements for performing computing operations, e.g. operational amplifiers for integration or differentiation; for forming integrals using capacitive elements
- G06G7/186—Arrangements for performing computing operations, e.g. operational amplifiers for integration or differentiation; for forming integrals using capacitive elements using an operational amplifier comprising a capacitor or a resistor in the feedback loop
Landscapes
- Engineering & Computer Science (AREA)
- Physics & Mathematics (AREA)
- Mathematical Physics (AREA)
- Theoretical Computer Science (AREA)
- Power Engineering (AREA)
- Software Systems (AREA)
- Computer Hardware Design (AREA)
- General Physics & Mathematics (AREA)
- Networks Using Active Elements (AREA)
Abstract
PURPOSE:To enable the integration operation much closer to ideal to be obtained by equivalently decreasing or negating the loss component of an integrating capacitor by positive feedback. CONSTITUTION:In an integrated circuit 2 a resistance Ri is connected to its input terminal which is of antiphase with respect to the output terminal of an amplifier 1, and an integrating capacitor C is connected to said input terminal and the output terminal. A resistance Rb for positive feedback is connected between the output terminal and the input terminal of the in-phase and said input terminal is grounded with the resistance Ra. Optimum feedback amount is determined by the loss component of the capacitor C and the magnitude of the resistance Ri. When the loss component of the capacitor C is small, the feedback amount is increased and when the loss of the capacitor C is small, the positive needback amount is decreased. If, with this circuit configuration, RiRb=RaR (R is the loss component of the capacitor C) is satisfied, the circuit 2 makes the integrating operation close to ideal, but even if this condition is not perfectly satisfied, the loss component of the capacitor C is decreased or negated by positive feedback.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| JP491080A JPS56103766A (en) | 1980-01-18 | 1980-01-18 | Integrating circuit |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| JP491080A JPS56103766A (en) | 1980-01-18 | 1980-01-18 | Integrating circuit |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| JPS56103766A true JPS56103766A (en) | 1981-08-19 |
Family
ID=11596788
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| JP491080A Pending JPS56103766A (en) | 1980-01-18 | 1980-01-18 | Integrating circuit |
Country Status (1)
| Country | Link |
|---|---|
| JP (1) | JPS56103766A (en) |
Cited By (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| JPH01106962U (en) * | 1988-01-12 | 1989-07-19 | ||
| WO1990000836A1 (en) * | 1988-07-13 | 1990-01-25 | Analog Devices, Inc. | Delta modulator with integrator having positive feedback |
-
1980
- 1980-01-18 JP JP491080A patent/JPS56103766A/en active Pending
Cited By (4)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| JPH01106962U (en) * | 1988-01-12 | 1989-07-19 | ||
| JPH0525003Y2 (en) * | 1988-01-12 | 1993-06-24 | ||
| WO1990000836A1 (en) * | 1988-07-13 | 1990-01-25 | Analog Devices, Inc. | Delta modulator with integrator having positive feedback |
| US4926178A (en) * | 1988-07-13 | 1990-05-15 | Analog Devices, Inc. | Delta modulator with integrator having positive feedback |
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